ABOUT THE SPEAKER
Suzanne Simard - Forest ecologist
Suzanne Simard studies the complex, symbiotic networks in our forests.

Why you should listen

A professor of forest ecology at the University of British Columbia's Department of Forest and Conservation Sciences in Vancouver, Suzanne Simard studies the surprising and delicate complexity in nature. Her main focus is on the below-ground fungal networks that connect trees and facilitate underground inter-tree communication and interaction. Her team's analysis revealed that the fungi networks move water, carbon and nutrients such as nitrogen between and among trees as well as across species. The research has demonstrated that these complex, symbiotic networks in our forests -- at the hub of which stand what she calls the "mother trees" -- mimic our own neural and social networks. This groundbreaking work on symbiotic plant communication has far-reaching implications in both the forestry and agricultural industries, in particular concerning sustainable stewardship of forests and the plant’s resistance to pathogens. She works primarily in forests, but also grasslands, wetlands, tundra and alpine ecosystems.

More profile about the speaker
Suzanne Simard | Speaker | TED.com
TEDSummit

Suzanne Simard: How trees talk to each other

Suzanne Simard: 樹同樹之間點樣傾偈嘅

Filmed:
4,161,601 views

生態學家 Suzanne Simard 話:「森林絕對唔止係你睇到嘅咁樣。」佢嘅進行咗 30 年嘅研究證明咗一個令人震驚嘅結論:樹木之間會講嘢,非常之頻繁,仲做長距離交流。了解更多嘅樹木之間和諧又復雜嘅社會生活,用新嘅眼光嚟睇自然世界。
- Forest ecologist
Suzanne Simard studies the complex, symbiotic networks in our forests. Full bio

Double-click the English transcript below to play the video.

00:12
Imagine想象 you're walking through透過 a forest森林.
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想像你喺片森林度散緊步
00:15
I'm guessing you're thinking思維
of a collection收集 of trees,
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我估你望到嘅係密麻麻嘅樹
00:19
what we foresters林農 call a stand,
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我哋林務員稱佢為「林分」
00:21
with their佢哋 rugged崎嶇 stems
and their佢哋 beautiful crowns.
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佢哋嘅樹幹粗壯、樹冠茂盛
00:25
Yes, trees are the foundation基礎 of forests森林,
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冇錯,樹係森林嘅基礎
00:28
but a forest森林 is much more
than what you see,
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但係森林絕對唔止你睇到嘅咁樣
00:31
and today今日 I want to change
the way you think about forests森林.
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今日,我希望改變你哋對森林嘅睇法
00:35
You see, underground地下
there is this other world世界,
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喺地底有另一個世界係
00:39
a world世界 of infinite無限 biological生物 pathways途徑
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一個連結無窮生命嘅世界
00:42
that connect連接 trees
and allow允許 them to communicate溝通
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連繫住樹木,畀空間佢哋交流
00:45
and allow允許 the forest森林 to behave行為
as though雖然 it's a single organism生物.
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使成個森林成為一個生物咁運作
00:50
It might可能 remind you
of a sort排序 of intelligence情報.
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佢可能使你諗起一種智慧
00:53
How do I know this?
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我點知嘅?
00:55
Here's呢度有 my story故事.
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以下係我嘅故事
00:57
I grew增長 up in the forests森林
of British英國 Columbia哥倫比亞.
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我喺加拿大卑詩省嘅森林度大嘅
01:01
I used to lay on the forest森林 floor地板
and stare凝視 up at the tree crowns.
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細細個鍾意瞓喺度望住啲樹
01:04
They were giants巨人.
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佢哋十足十巨人
01:06
My grandfather祖父 was a giant巨大, too.
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我爺爺都係一個巨人
01:07
He was a horse logger記錄,
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佢係一個伐木工人
01:09
and he used to selectively選擇性 cutcut
cedar雪松 poles兩極 from the inland內陸 rainforest雨林.
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佢喺內陸森林度會揀一啲杉樹來鋸
01:13
Grandpa爺爺 taught me about the quiet安靜
and cohesive粘性 ways方式 of the woods樹林,
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佢教識我欣賞森林生活嘅恬靜同諧嘅
01:17
and how my family家庭 was knit針織 into it.
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仲有森林同我哋一家嘅聯繫
01:21
So I followed黎緊 in grandpa's阿爺嘅 footsteps腳步.
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所以我繼承咗爺爺嘅事業
01:23
He and I had this curiosity好奇心 about forests森林,
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佢同我對森林都有好奇
01:26
and my first big "aha哈哈" moment時刻
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而我第一個醒悟
01:28
was at the outhouse廁所 by our lake.
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就來自我哋喺湖邊嘅廁所
01:31
Our poor可憐 dog Jigs夾具
had slipped下滑 and fallen下降 into the pit.
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我哋隻狗 Jigs 跣咗落個屎氹度
01:36
So grandpa爺爺 ran up with his shovel
to rescue救援 the poor可憐 dog.
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爺爺就攞住個鏟,跑去救隻衰狗
01:39
He was down there, swimming游泳 in the muck淤泥.
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爺爺喺個氹度游,成身臭晒
01:43
But as grandpa爺爺 dug
through透過 that forest森林 floor地板,
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就喺爺爺挖緊泥嗰陣
01:45
I became成為 fascinated著迷 with the roots,
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我俾氹裡邊啲樹根吸引住
01:48
and under that, what I learned later之後
was the white白色 mycelium菌絲
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後來先知,地底嗰啲係白色菌絲
01:51
and under that the red
and yellow黃色 mineral礦物 horizons視野.
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菌絲下面,係紅色同黃色嘅礦物層
01:55
Eventually最終, grandpa爺爺 and I
rescued the poor可憐 dog,
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後尾,我同爺爺救到隻狗
01:58
but it was at that moment時刻 that I realized實現
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喺嗰一剎那,我體會到
02:00
that that palette調色闆 of roots and soil土壤
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樹根同土壤嘅融合
02:03
was really the foundation基礎 of the forest森林.
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先係森林嘅基礎
02:06
And I wanted to know more.
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我仲想了解多啲
02:08
So I studied研究 forestry林業.
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於是我去讀森林學
02:11
But soon好快 I found發現 myself自己 working工作
alongside旁邊 the powerful強大 people
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好快就同一班大人物做嘢
02:15
in charge負責 of the commercial商業 harvest收穫.
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一齊經營商業伐木
02:17
The extent程度 of the clear-cutting清切
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大規模嘅濫伐
02:20
was alarming報警,
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景況令人擔憂
02:21
and I soon好快 found發現 myself自己
conflicted矛盾 by my part部分 in it.
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我亦飽受良心嘅譴責
02:25
Not only that, the spraying噴凃
and hacking黑客 of the aspens白楊 and birches樺樹
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佢哋仲灑農藥、斬晒啲白楊樹同樺樹
02:30
to make way for the more commercially商業
valuable寶貴 planted種植 pines松樹 and firs冷杉
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純粹為咗改種更賺錢嘅松樹同冷杉樹
02:35
was astounding驚人.
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好令人震驚
02:37
It seemed好似 that nothing could stop
this relentless無情 industrial工業 machine.
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似乎咩都阻止唔到工業機器嘅推進
02:41
So I went back to school學校,
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所以我再讀去返書
02:44
and I studied研究 my other world世界.
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開始研究我嘅另一個世界
02:47
You see, scientists科學家 had just discovered發現
in the laboratory實驗室 in vitro體外
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科學家啱啱先喺實驗室發現
02:51
that one pine seedling幼苗 root
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喺試管裡邊,碳可以從一個松樹嘅幼苗
02:53
could transmit傳輸 carbon
to another另一個 pine seedling幼苗 root.
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傳去另一棵幼苗嗰度
02:58
But this was in the laboratory實驗室,
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但呢個只係實驗室裡邊頭發現
02:59
and I wondered,
could this happen發生 in real真正 forests森林?
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我喺度諗,喺森林度得唔得呢?
03:03
I thought yes.
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我諗應該得
03:05
Trees in real真正 forests森林 might可能 also
share共享 information信息 below下面 ground地面.
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樹木或者真係可以喺地底傳送信息
03:10
But this was really controversial爭議,
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但呢個諗法爭議太大
03:11
and some people thought I was crazy,
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啲人甚至以為我癲咗
03:14
and I had a really hard努力 time
getting得到 research研究 funding資金.
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所以我好難籌到研究經費
03:17
But I persevered堅持,
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但係我一直堅持
03:20
and I eventually最終 conducted進行
some experiments實驗 deep in the forest森林,
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卒之, 我喺森林做咗啲實驗
03:24
25 years ago.
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喺 25 年前
03:26
I grew增長 80 replicates複製 of three species物種:
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我種咗 3 種樹,一種 80 棵:
03:29
paper birch樺木, Douglas道格拉斯 firFir,
and western西方 red cedar雪松.
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北美白樺、黃杉同紅崖柏
03:32
I figured the birch樺木 and the firFir
would be connected連接 in a belowground地下 webWeb,
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我設想北美白樺同黃杉會喺地底有交流
03:36
but not the cedar雪松.
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但紅崖柏就冇
03:37
It was in its own自己 other world世界.
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紅崖柏只會自成一國
03:40
And I gathered聚集 my apparatus裝置,
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跟住,我準備好曬啲器材
03:42
and I had no money,
so I had to do it on the cheap.
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因為冇錢,成本盡量要低
03:45
So I went to Canadian加拿大 Tire --
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所以我去咗加拿大輪胎公司
03:47
(Laughter笑聲)
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(笑聲)
03:48
and I bought some plastic bags
and duct tape磁帶 and shade陰影 cloth,
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買咗啲膠袋、牛皮膠紙、遮光布
03:52
a timer計時器, a paper suit, a respirator呼吸.
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計時器、防護衣同防護口罩
03:56
And then I borrowed some
high-tech高科技 stuff啲嘢 from my university大學:
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跟住我問大學借咗啲儀器:
03:59
a Geiger盖革 counter計數器, a scintillation閃爍 counter計數器,
a mass質素 spectrometer光譜儀, microscopes顯微鏡.
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一個蓋革計數器、一個閃爍輻射儀、
一個質譜儀同幾座顯微鏡
04:04
And then I got some
really dangerous危險 stuff啲嘢:
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我仲攞咗一啲超危險嘅嘢:
04:06
syringes針筒 full of radioactive放射性
carbon-碳-14 carbon dioxide氧化 gas氣體
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幾支裝滿放射性
04:11
and some high pressure壓力 bottles
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有「碳-14」嘅二氧化碳嘅注射器
04:13
of the stable穩定 isotope同位素
carbon-碳-13 carbon dioxide氧化 gas氣體.
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同埋幾個裝咗穩定同位素
04:17
But I was legally合法 permitted允許.
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有「碳-13」嘅二氧化碳嘅高壓氣樽
04:19
(Laughter笑聲)
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全部合法嘎
04:20
Oh, and I forgot唔記得 some stuff啲嘢,
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(笑聲)
04:23
important重要 stuff啲嘢: the bug錯誤 spray噴霧,
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有幾樣嘢我帶漏咗, 好重要嘅嘢:
04:25
the bear spray噴霧,
the filters過濾器 for my respirator呼吸.
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殺蟲噴霧、防熊噴霧、口罩濾網
04:29
Oh well.
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好喇
04:31
The first day of the experiment實驗,
we got out to our plot情節
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實驗嘅第一日,我哋嚟到目的地
04:34
and a grizzly灰熊 bear and her cub幼崽
chased us off.
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點知有隻灰熊媽媽同個仔追住我哋
04:37
And I had no bear spray噴霧.
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我冇帶防熊噴霧
04:41
But you know, this is how
forest森林 research研究 in Canada加拿大 goes.
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不過喺加拿大嘅森林做研究係咁㗎喇
04:44
(Laughter笑聲)
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(笑聲)
04:45
So I came back the next day,
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第二日,我又嚟喇
04:47
and mama亞媽 grizzly灰熊 and her cub幼崽 were gone.
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隻灰熊同個仔走咗喇
04:49
So this time, we really got started初時,
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所以今次,我哋真正開始喇
04:51
and I pulled on my white白色 paper suit,
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我著好件防護衣
04:54
I put on my respirator呼吸,
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戴好個防護面罩
04:58
and then
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之後
04:59
I put the plastic bags over my trees.
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用膠袋冚住啲樹
05:03
I got my giant巨大 syringes針筒,
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我拎住個超大注射器
05:05
and I injected注入 the bags
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將示蹤同位素二氧化碳
05:06
with my tracer示蹤 isotope同位素
carbon dioxide氧化 gases氣體,
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射入個膠袋度
05:10
first the birch樺木.
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首先係北美白樺
05:11
I injected注入 carbon-碳-14, the radioactive放射性 gas氣體,
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我將放射性氣體「碳-14」
05:14
into the bag of birch樺木.
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射入佢度
05:16
And then for firFir,
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之後係黃杉,我注入咗
05:17
I injected注入 the stable穩定 isotope同位素
carbon-碳-13 carbon dioxide氧化 gas氣體.
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穩定嘅同位素「碳-13」二氧化碳
05:21
I used two isotopes同位素,
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我用咗兩種唔同嘅同位素
05:23
because I was wondering
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因為我想知
05:24
whether係唔係 there was two-way雙向 communication通信
going on between之間 these species物種.
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呢兩種樹之間係咪有雙向交流
05:29
I got to the final最後 bag,
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注射用到最後一袋
05:32
the 80th replicate複製,
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即係第 80 組樹
05:33
and all of a sudden突然
mama亞媽 grizzly灰熊 showed表明 up again.
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突然間,隻灰熊又來咗
05:36
And she started初時 to chase追逐 me,
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喺後面追住我
05:37
and I had my syringes針筒 above以上 my head,
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我舉住個注射器過我個頭
05:40
and I was swatting the mosquitos蚊子,
and I jumped into the truck貨車,
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一邊拍蚊,一邊跳到架貨車度
05:43
and I thought,
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我心諗
05:44
"This is why people do lab實驗室 studies研究."
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難怪啲科學家鍾意留喺實驗室啦!
05:46
(Laughter笑聲)
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(笑聲)
05:49
I waited an hour小時.
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我等咗一個鐘
05:50
I figured it would take this long
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我諗啲樹需要咁上下時間
05:52
for the trees to suck up
the CO有限公司2 through透過 photosynthesis光合作用,
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透過光合作用吸收啲
05:55
turn it into sugars,
send發送 it down into their佢哋 roots,
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放射性嘅二氧化碳
05:58
and maybe, I hypothesized虛擬,
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轉換成糖,然後送到樹根
06:00
shuttle穿梭 that carbon belowground地下
to their佢哋 neighbors鄰居.
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然後傳畀隔離棵樹
06:04
After the hour小時 was up,
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過咗一個鐘
06:06
I rolled推出 down my window窗口,
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我拉低個車窗
06:08
and I checked檢查 for mama亞媽 grizzly灰熊.
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睇下隻灰熊喺邊
06:10
Oh good, she's over there
eating her huckleberrieshuckleberries.
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太好喇,佢喺埋邊食緊堆黑莓
06:13
So I got out of the truck貨車
and I got to work.
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於是我行出架貨車,開始做嘢
06:16
I went to my first bag with the birch樺木.
I pulled the bag off.
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我行近第一棵樺樹,掹個袋落嚟
06:20
I ran my Geiger盖革 counter計數器 over its leaves.
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將部蓋勒計數器擺近啲葉度
06:23
KkhhKkhh!
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咔!
06:25
Perfect完美.
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完美
06:26
The birch樺木 had taken採取 up
the radioactive放射性 gas氣體.
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樺樹已經吸收咗啲放射性氣體
06:29
Then the moment時刻 of truth真理.
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關鍵時刻嚟喇
06:31
I went over to the firFir tree.
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我行近棵杉樹
06:33
I pulled off its bag.
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掹走個袋
06:35
I ran the Geiger盖革 counter計數器 up its needles,
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將部機擺近啲針葉度
06:37
and I heard聽到 the most beautiful sound聲音.
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我聽到極之美妙嘅聲音
06:40
KkhhKkhh!
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咔!
06:42
It was the sound聲音 of birch樺木 talking講嘢 to firFir,
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係樺樹同杉樹傾偈嘅聲音
06:45
and birch樺木 was saying,
"Hey, can I help you?"
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樺樹問︰「喂,有冇嘢要幫手?」
06:49
And firFir was saying, "Yeah,
can you send發送 me some of your carbon?
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杉樹話︰「有呀,你畀啲碳我得唔得?
06:52
Because somebody有人
threw a shade陰影 cloth over me."
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我俾塊遮光布擋住咗呀。」
06:56
I went up to cedar雪松, and I ran
the Geiger盖革 counter計數器 over its leaves,
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我行近棵杉樹,將部機擺近啲葉度
07:00
and as I suspected懷疑,
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不出我所料
07:02
silence沉默.
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一啲聲音都冇
07:04
Cedar雪松 was in its own自己 world世界.
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柏樹完全自成一國
07:06
It was not connected連接 into the webWeb
interlinking互聯 birch樺木 and firFir.
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佢冇同樺樹同杉樹連繫埋一齊
07:11
I was so excited興奮,
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我太興奮嘞
07:14
I ran from plot情節 to plot情節
and I checked檢查 all 80 replicates複製.
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行勻成個地方,檢查晒八十組嘅實驗
07:18
The evidence證據 was clear清楚.
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事實擺在眼前
07:20
The C-C-13 and C-C-14 was showing顯示 me
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「碳-13」同「碳-14」向我證明咗
07:23
that paper birch樺木 and Douglas道格拉斯 firFir
were in a lively活潑 two-way雙向 conversation談話.
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樺樹同杉樹真係有傾有講嘎
07:27
It turns輪流 out at that time of the year,
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我哋發現
07:29
in the summer夏天,
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夏天時
07:31
that birch樺木 was sending發送 more carbon to firFir
than firFir was sending發送 back to birch樺木,
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樺樹送碳俾杉樹,多過收碳返來
07:34
especially尤其係 when the firFir was shaded陰影.
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尤其喺杉樹俾嘢遮住嗰陣
07:37
And then in later之後 experiments實驗,
we found發現 the opposite相反,
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往後嘅實驗有相反嘅結果
07:40
that firFir was sending發送 more carbon to birch樺木
than birch樺木 was sending發送 to firFir,
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杉樹送碳元素俾樺樹,多過收碳返來
07:43
and this was because the firFir was still
growing增長 while the birch樺木 was leafless光脫脫.
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事關嗰時杉樹仲有葉,而樺樹落曬葉
07:47
So it turns輪流 out the two species物種
were interdependent相互依存,
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兩種樹真係互相倚靠
07:50
like yin and yang.
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就好似陰同陽咁
07:52
And at that moment時刻,
everything came into focus重點 for me.
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喺嗰一刻,一切都豁然開朗
07:55
I knew I had found發現 something big,
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我知道我嘅發現好重大
07:58
something that would change the way
we look at how trees interact互動 in forests森林,
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使我哋重新審視到樹木同森林嘅關係
08:03
from not just competitors競爭對手
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佢哋之間唔單只有競爭
08:05
but to cooperators合作.
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仲有互相合作
08:07
And I had found發現 solid固體 evidence證據
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我終於搵到有力嘅證據
08:10
of this massive大規模 belowground地下
communications通信 network網絡,
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證明龐大嘅地下溝通網絡
08:13
the other world世界.
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確實存在
08:15
Now, I truly真正 hoped希望 and believed相信
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呢個時候,我衷心期盼
08:17
that my discovery發現 would change
how we practice實踐 forestry林業,
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我嘅發現會改變林業嘅操作
08:21
from clear-cutting清切 and herbicidingherbiciding
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從大規模斬樹、濫用除草劑
08:23
to more holistic整體 and sustainable持續 methods方法,
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轉為宏觀、持續
08:26
methods方法 that were less expensive昂貴
and more practical實際.
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廉價、更實嘅方法
08:29
What was I thinking思維?
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我有啲咩方法?
08:31
I'll come back to that.
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陣間話你聽
08:35
So how do we do science科學
in complex複雜 systems系統 like forests森林?
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我們點樣研究森林嘅複雜系統?
08:40
Well, as forest森林 scientists科學家,
we have to do our research研究 in the forests森林,
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既然係研究森林,就要深入森林
08:44
and that's really tough艱難,
as I've shown顯示 you.
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但確實好難,正如你啱啱所見
08:46
And we have to be really good
at running運行 from bears.
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兼且要識得點避開啲熊人
08:50
But mostly主要, we have to persevere堅持
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但我哋要堅持
08:52
in spite儘管 of all the stuff啲嘢
stacked堆疊 against us.
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哪怕係困難重重
08:55
And we have to follow遵循 our intuition直覺
and our experiences經驗
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更要順從自己嘅直覺同經驗
08:57
and ask問吓 really good questions個問題.
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問一啲有價值嘅問題
09:00
And then we've我哋都 got to gather收集 our data數據
and then go verify驗證.
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之後我們要收集數據,同去驗證
09:03
For me, I've conducted進行 and published發表
hundreds數以百計 of experiments實驗 in the forest森林.
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我做同發表過數以百計嘅森林實驗
09:09
Some of my oldest古老 experimental實驗 plantations人工林
are now over 30 years old.
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有啲實驗基地已經用咗三十年
09:14
You can check檢查 them out.
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你哋可以去望下
09:15
That's how forest森林 science科學 works工程.
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森林科學本應係咁
09:18
So now I want to talk about the science科學.
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接住我想從科學角度探討
09:20
How were paper birch樺木
and Douglas道格拉斯 firFir communicating溝通?
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樺樹同杉樹到底點溝通嘅呢?
09:23
Well, it turns輪流 out they were conversing交談
not only in the language語言 of carbon
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事實上,佢哋除咗用碳作為媒介嚟交流
09:28
but also nitrogen and phosphorus
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仲會用氮同磷
09:31
and water and defense防禦 signals信號
and allele基因 chemicals化學品 and hormones激素 --
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同水、防禦信號
等位基因化學物、激素
09:35
information信息.
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呢啲都係信息
09:38
And you know, I have to tell you,
before me, scientists科學家 had thought
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喺我嘅發現之前,科學家認為
09:41
that this belowground地下
mutualistic互惠 symbiosis共生 called a mycorrhiza菌根
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地底之所以有互惠共生嘅現象
09:44
was involved涉及.
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係因為有菌根
09:46
Mycorrhiza菌根 literally從字面上 means意味着 "fungus真菌 root."
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菌根,亦即係「菇菌嘅根」
09:50
You see their佢哋 reproductive生殖 organs器官
when you walk through透過 the forest森林.
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你行過森林,會見到佢哋嘅繁殖器官
09:54
They're the mushrooms蘑菇.
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佢哋就係蘑菇
09:56
The mushrooms蘑菇, though雖然,
are just the tip貼士 of the iceberg冰山,
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而菇頂只係佢嘅一小部份
09:59
because coming out of those stems
are fungal真菌 threads线程 that form形式 a mycelium菌絲,
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因為菇柄底會長出真菌絲
10:03
and that mycelium菌絲
infects感染 and colonizes殖民 the roots
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形成菌絲體,繼而感染同侵佔
10:06
of all the trees and plants植物.
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其他植物嘅根部
10:08
And where the fungal真菌 cells細胞
interact互動 with the root cells細胞,
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真菌細胞同樹根細胞交織嘅地方
10:11
there's a trade貿易 of carbon for nutrients營養,
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都有用碳換取養份嘅現象
10:13
and that fungus真菌 gets得到 those nutrients營養
by growing增長 through透過 the soil土壤
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真菌向下生長,包實啲土壤顆粒
10:16
and coating塗層 every soil土壤 particle粒子.
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繼而吸收養份
10:19
The webWeb is so dense密集 that there can be
hundreds數以百計 of kilometers公里 of mycelium菌絲
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個菌絲網密到話唔定有幾百公里長
10:24
under a single footstep腳步.
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堆埋得個腳板咁細
10:26
And not only that, that mycelium菌絲 connects連接
different不同 individuals in the forest森林,
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除此之外,菌絲會連接森林嘅不同植物
10:32
individuals not only of the same相同 species物種
but between之間 species物種, like birch樺木 and firFir,
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不論係咪同一物種,譬如樺樹同杉樹咁
10:37
and it works工程 kind一種 of like the Internet互聯網.
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運作模式十足十係個互聯網
10:41
You see, like all networks網絡,
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同所有嘅網絡一樣
10:43
mycorrhizal菌根 networks網絡 have nodes節點 and links連結.
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菌根嘅網絡由綫同點組成
10:46
We made作出 this map地圖 by examining檢查
the short sequences序列 of DNADna
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我哋分析咗森林每棵杉樹同菇嘅
10:50
of every tree and every fungal真菌 individual
in a patch補丁 of Douglas道格拉斯 firFir forest森林.
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DNA 短序, 然後畫咗呢張地圖
10:56
In this picture圖片, the circles represent代表
the Douglas道格拉斯 firFir, or the nodes節點,
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圖中嘅圓點代表住黃杉
10:59
and the lines represent代表 the interlinking互聯
fungal真菌 highways公路, or the links連結.
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啲綫代表住菌根之間嘅連繫
11:05
The biggest最大, darkest黑暗 nodes節點
are the busiest繁忙 nodes節點.
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最大最深色嘅圓點,擁有最多連接
11:09
We call those hub樞紐 trees,
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佢哋叫核心樹木
11:11
or more fondly深情, mother母親 trees,
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又暱稱「母樹」
11:13
because it turns輪流 out
that those hub樞紐 trees nurture培養 their佢哋 young年輕,
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因為佢哋會滋養住
11:18
the ones growing增長 in the understory草本植物.
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年輕嘅矮層灌木
11:21
And if you can see those yellow黃色 dotsD,
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黃色圓點
11:23
those are the young年輕 seedlings幼苗
that have established建立 within the network網絡
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代表同母樹有連繫嘅樹苗
11:26
of the old mother母親 trees.
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森林裡面
一棵母樹可以連繫住過百棵樹
11:28
In a single forest森林, a mother母親 tree can be
connected連接 to hundreds數以百計 of other trees.
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透過同位素示蹤劑進行檢測
11:33
And using使用 our isotope同位素 tracers示蹤劑,
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我哋察覺到
11:36
we have found發現 that mother母親 trees
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母樹會透過菌根嘅聯網傳
11:37
will send發送 their佢哋 excess過剩 carbon
through透過 the mycorrhizal菌根 network網絡
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送剩餘嘅碳俾
11:40
to the understory草本植物 seedlings幼苗,
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矮層嘅樹苗
11:42
and we've我哋都 associated相關 this
with increased增加 seedling幼苗 survival生存
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我哋發現,樹苗嘅存活率
11:45
by four times.
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會因此大增四倍
11:47
Now, we know we all
favor our own自己 children孩子,
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正如父母會愛錫自己嘅仔女
11:51
and I wondered, could Douglas道格拉斯 firFir
recognize認識 its own自己 kin,
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所以我諗,黃杉會唔會好似嗰隻熊咁
11:55
like mama亞媽 grizzly灰熊 and her cub幼崽?
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認到自己啲仔女呢?
11:58
So we set設置 about an experiment實驗,
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我哋於是設計咗個實驗
12:00
and we grew增長 mother母親 trees
with kin and stranger's陌生人的 seedlings幼苗.
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將母樹、幼苗同其他種子種埋一齊
12:04
And it turns輪流 out
they do recognize認識 their佢哋 kin.
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結果母樹認得出自己嘅後代
12:07
Mother母親 trees colonize殖民 their佢哋 kin
with bigger mycorrhizal菌根 networks網絡.
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母樹利用更大嘅菌根網包裹幼苗
12:12
They send發送 them more carbon below下面 ground地面.
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喺地底傳送更多嘅碳
12:14
They even reduce減少
their佢哋 own自己 root competition競爭
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甚至減少自己根部嘅發展
12:17
to make elbow room間房 for their佢哋 kids孩子.
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為幼苗創造生長空間
12:20
When mother母親 trees are injured受傷 or dying,
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喺母樹受傷或者就來枯萎
12:23
they also send發送 messages消息 of wisdom智慧
on to the next generation生成 of seedlings幼苗.
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佢哋會將生存智慧傳俾下一代
12:29
So we've我哋都 used isotope同位素 tracing吊住
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我哋透過同位素示蹤法,追蹤碳嘅移動
12:30
to trace吊住 carbon moving移動
from an injured受傷 mother母親 tree
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從受傷嘅母樹嘅樹幹傳到菌根網
12:33
down her trunk樹幹
into the mycorrhizal菌根 network網絡
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再傳到周圍嘅幼苗
12:35
and into her neighboring隔籬 seedlings幼苗,
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唔單止係碳
12:38
not only carbon but also defense防禦 signals信號.
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仲有防禦信號
12:41
And these two compounds化合物
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呢兩種混合物
12:43
have increased增加 the resistance電阻
of those seedlings幼苗 to future未來 stresses應力.
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增加咗幼苗嘅抗壓能力
12:47
So trees talk.
256
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所以樹木識講嘢
12:50
(Applause掌聲)
257
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(掌聲)
12:52
Thank you.
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多謝
12:57
Through透過 back and forth提出 conversations對話,
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經過反反覆覆嘅對話
12:59
they increase增加 the resilience彈性
of the whole整個 community社區.
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佢哋增強咗成個團體嘅適應力
13:03
It probably可能 reminds you
of our own自己 social社會 communities社區,
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佢哋可能令你諗起咗
13:06
and our families家庭,
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我嘅社會群體,我哋嘅家庭
13:07
well, at least最小 some families家庭.
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嗯,至少部分家庭啦
13:09
(Laughter笑聲)
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(笑聲)
13:11
So let's come back to the initial初始 pointD.
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我哋返到最初嘅問題
13:14
Forests森林 aren't唔係 simply淨係
collections集合 of trees,
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森林唔單只有樹
13:16
they're complex複雜 systems系統
with hubs樞紐 and networks網絡
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佢哋係有樞紐同網絡嘅複雜系統
13:20
that overlap重疊 and connect連接 trees
and allow允許 them to communicate溝通,
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彼此覆蓋同聯繫,令佢哋可以交流
13:24
and they provide提供 avenues途徑
for feedbacks反饋 and adaptation適應,
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仲提供咗反饋同適應嘅方式
13:27
and this makes使 the forest森林 resilient彈性.
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加強咗森林嘅適應能力
13:30
That's because there are many好多 hub樞紐 trees
and many好多 overlapping重疊 networks網絡.
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因為森林有好多樞紐同彼此覆蓋嘅網絡
13:34
But they're also vulnerable脆弱,
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但係佢哋都好脆弱
13:36
vulnerable脆弱 not only
to natural自然 disturbances
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唔單只會受到自然嘅干擾
13:40
like bark樹皮 beetles甲蟲 that preferentially優先
attack攻擊 big old trees
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譬如特別鍾意侵襲老樹嘅樹皮甲蟲
13:43
but high-grade卡士 logging測井
and clear-cut清切 logging測井.
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仲受到高強度伐木同清場式伐木嘅影響
13:47
You see, you can take out
one or two hub樞紐 trees,
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你可以攞走一兩棵樞紐樹
13:50
but there comes a tipping貼士 pointD,
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但係呢個就已經係極限
13:52
because hub樞紐 trees are not
unlike rivets鉚釘 in an airplane飛機.
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因為樞紐樹好似飛機上嘅卯釘
13:55
You can take out one or two
and the plane飛機 still flies蒼蠅,
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你攞走一兩粒卯釘,飛機仲飛得
13:59
but you take out one too many好多,
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但係如果你攞走太多
14:01
or maybe that one holding舉行 on the wings翅膀,
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或著你攞走一個關鍵嘅卯釘
14:03
and the whole整個 system系統 collapses崩潰.
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成個系統都會塌
14:07
So now how are you thinking思維
about forests森林? Differently不同?
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咁宜家你係點睇啲森林?有冇啲唔同?
14:09
(Audience觀眾) Yes.
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(觀眾)係
14:11
Cool.
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太好啦
14:13
I'm glad開心.
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我好高興
14:14
So, remember記得 I said earlier較早時
that I hoped希望 that my research研究,
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記得我之前話過,我希望我嘅研究
14:18
my discoveries發現 would change
the way we practice實踐 forestry林業.
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同發現會改變我哋實踐林學嘅方式
14:22
Well, I want to take a check檢查 on that
30 years later之後 here in western西方 Canada加拿大.
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我諗喺 30 年後,喺加拿大西部做檢測
14:34
This is about 100 kilometers公里
to the west西 of us,
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既係呢度向西 100 公里
14:37
just on the border邊境 of Banff班夫 National國家 Park公園.
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就喺班夫國家公園嘅邊界
14:41
That's a lot of clear-cuts清除.
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嗰度有好多清場式伐木
14:43
It's not so pristine原始.
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唔再係原始森林啦
14:45
In 2014, the World世界 Resources資源 Institute研究所
reported報道 that Canada加拿大 in the past過去 decade同你十年
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2014 年,世界資源研究所報導
14:51
has had the highest最高 forest森林 disturbance
rate of any country國家 worldwide全球,
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過去十年加拿大有世界最高森林破壞率
14:55
and I bet打賭 you thought it was Brazil巴西.
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你哋以為嗰個國家係巴西,係唔係
14:59
In Canada加拿大, it's 3.6 percent百分比 per year.
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喺加拿大,破壞率係每年 3.6%
15:02
Now, by my estimation估計, that's about
four times the rate that is sustainable持續.
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據我估計,係可持續破壞率嘅四倍
15:09
Now, massive大規模 disturbance at this scale規模
is known to affect影響 hydrological水文 cycles周期,
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咁規模嘅大面積破壞明顯影響水循環
15:13
degrade降低 wildlife野生動物 habitat棲息地,
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惡化野生生態環境
15:15
and emit發出 greenhouse溫室 gases氣體
back into the atmosphere氣氛,
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而且将溫室氣體放返入大氣
15:18
which creates創建 more disturbance
and more tree diebacksdiebacks.
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結果導致更加多嘅破壞同樹嘅回枯
15:23
Not only that, we're continuing繼續
to plant植物 one or two species物種
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仲有,我們繼續種一種或著兩種樹木
15:26
and weed雜草 out the aspens白楊 and birches樺樹.
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停種同消滅山楊樹同樺樹
15:29
These simplified簡化 forests森林 lack缺乏 complexity複雜性,
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咁嘅森林冇曬多樣性
15:31
and they're really vulnerable脆弱
to infections感染 and bugs錯誤.
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會好易患傳染病同受蟲害影響
15:35
And as climate氣候 changes變化,
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隨著氣候變化
15:37
this is creating創建 a perfect完美 storm風暴
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幾樣嘢夾埋後果會好嚴重
15:41
for extreme極端 events事件, like the massive大規模
mountain pine beetle甲蟲 outbreak爆發
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譬如啱啱蔓延咗成個北美洲嘅
15:45
that just swept席捲 across North America美國,
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大規模山地松樹甲蟲蟲災
15:47
or that megafiremegafire in the last
couple夫婦 months in Alberta艾伯塔省.
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仲有最近喺阿爾伯塔嘅超級大火
15:52
So I want to come back
to my final最後 question個問題:
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所以宜家我哋返到最後一個問題:
15:56
instead相反 of weakening弱化 our forests森林,
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與其弱化我哋嘅森林, 我哋點樣
15:58
how can we reinforce加強 them
and help them deal交易 with climate氣候 change?
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強化佢哋適應氣候變化嘅能力
16:03
Well, you know, the great thing
about forests森林 as complex複雜 systems系統
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作為複雜嘅生態系統,森林好叻嘅一點
16:07
is they have enormous巨大
capacity能力 to self-heal自愈.
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就係佢哋有好強嘅自我修復能力
16:11
In our recent最近 experiments實驗,
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我哋近期嘅實驗表明
16:13
we found發現 with patch-cutting貼片切割
and retention保留 of hub樞紐 trees
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用小規模砍伐、保護樞紐樹
16:16
and regeneration再生 to a diversity多樣性
of species物種 and genes基因 and genotypes基因
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重現物種多樣性
16:20
that these mycorrhizal菌根 networks網絡,
they recover恢復 really rapidly迅速.
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會使真菌菌根網好快咁恢復
16:25
So with this in mind介意, I want to leave離開 you
with four simple簡單 solutions解決方案.
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我想留畀你哋四個簡單嘅方案,我哋
16:30
And we can't kid孩子 ourselves自己
that these are too complicated複雜 to act行為 on.
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唔可以呃自己,話啲方法太複雜做唔到
16:35
First, we all need
to get out in the forest森林.
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首先,我哋都需要行入森林
16:39
We need to reestablish重建
local當地 involvement參與 in our own自己 forests森林.
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我哋需要令當地人重新融入啲森林度
16:44
You see, most of our forests森林 now
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宜家我哋大多數嘅森林
16:45
are managed管理 using使用
a one-size-fits-all個尺寸適合所有 approach方法,
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都俾人用單一嘅方式管理,但係
16:48
but good forest森林 stewardship管理
requires需要 knowledge知識 of local當地 conditions條件.
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好嘅森林管理需要關於當地條件嘅知識
16:54
Second第二, we need to save
our old-growth老增長 forests森林.
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第二,我哋要完挽救我哋嘅老齡林
16:59
These are the repositories儲埋庫 of genes基因
and mother母親 trees and mycorrhizal菌根 networks網絡.
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佢哋係基因、母樹同真菌菌根網
嘅信息庫
17:06
So this means意味着 less cutting切割.
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即係要減少伐木
17:08
I don't mean no cutting切割, but less cutting切割.
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我唔係話禁止伐木,而係減少伐木
17:11
And third第三, when we do cutcut,
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第三,喺我哋伐木時
17:14
we need to save the legacies遺產,
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挽救樹木嘅「遺産」
17:17
the mother母親 trees and networks網絡,
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母樹同真菌菌根網
17:18
and the wood木材, the genes基因,
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仲有樹林同基因
17:20
so they can pass透過 their佢哋 wisdom智慧
onto the next generation生成 of trees
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咁樣先可以将智慧傳畀下一代嘅樹木
17:24
so they can withstand承受
the future未來 stresses應力 coming down the road道路.
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使佢哋有應對未來壓力嘅能力
17:28
We need to be conservationists保育.
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我哋需要成為自然環境保護主義者
17:31
And finally最後, fourthly第四 and finally最後,
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最尾,第四點
17:35
we need to regenerate再生 our forests森林
with a diversity多樣性 of species物種
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再生擁有物種多樣性
17:38
and genotypes基因 and structures結構
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基因型多樣性同結構多樣性嘅森林
17:41
by planting種植 and allowing允許
natural自然 regeneration再生.
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必须通過人工種植同自然再生
17:44
We have to give Mother母親 Nature自然
the tools工具 she needs需要
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我哋必須畀大自然需要嘅
17:47
to use her intelligence情報 to self-heal自愈.
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可以幫佢自我治癒嘅工具
17:51
And we need to remember記得
that forests森林 aren't唔係 just a bunch of trees
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森林唔單只係互相競爭嘅
17:54
competing競爭 with each每個 other,
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一叢叢樹木
17:55
they're supercooperatorssupercooperators.
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佢哋係超級合作者
17:58
So back to Jigs夾具.
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再講返 Jigs
18:00
Jigs's夾具的 fall秋天 into the outhouse廁所
showed表明 me this other world世界,
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Jigs 嗰件事令我睇到另外嘅世界
18:04
and it changed my view视图 of forests森林.
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同改變咗我對森林嘅睇法
18:07
I hope希望 today今日 to have changed
how you think about forests森林.
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希望我今日改變咗你哋對森林嘅睇法
18:10
Thank you.
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多謝
18:12
(Applause掌聲)
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(掌聲)
Translated by Helen Liang
Reviewed by Sylvia He

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ABOUT THE SPEAKER
Suzanne Simard - Forest ecologist
Suzanne Simard studies the complex, symbiotic networks in our forests.

Why you should listen

A professor of forest ecology at the University of British Columbia's Department of Forest and Conservation Sciences in Vancouver, Suzanne Simard studies the surprising and delicate complexity in nature. Her main focus is on the below-ground fungal networks that connect trees and facilitate underground inter-tree communication and interaction. Her team's analysis revealed that the fungi networks move water, carbon and nutrients such as nitrogen between and among trees as well as across species. The research has demonstrated that these complex, symbiotic networks in our forests -- at the hub of which stand what she calls the "mother trees" -- mimic our own neural and social networks. This groundbreaking work on symbiotic plant communication has far-reaching implications in both the forestry and agricultural industries, in particular concerning sustainable stewardship of forests and the plant’s resistance to pathogens. She works primarily in forests, but also grasslands, wetlands, tundra and alpine ecosystems.

More profile about the speaker
Suzanne Simard | Speaker | TED.com

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