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主题：AGRICULTURE REPORT - Study Sees Risk to California Plants From Climate Change

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VOA农业报道-研究发现气候变化对加利福尼亚植物造成危害!

Scientists say California's coastal redwoods are among plant species that could be affected by climate change

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关注气候变化就是关注人类本身！
气温的升高、降水量的变化等剧烈的气候变化使加利福尼亚许多植物死亡、迁移，进而也影响到了以这些植物为食的动物！

California has more than two thousand kinds of plants that are not found anywhere else. A new study says climate change could severely affect these plants by the end of the century.
Many could move northward and toward the Pacific coast in reaction to rising temperatures and changes in rainfall. Others might climb up mountains to find the cooler climates they like.
But David Ackerly at the University of California, Berkeley, says the speed of climate change is greater than during ice ages in the past. He says plants that cannot move fast enough are in danger of getting killed off before they can relocate. Changes in plants could also affect animals that depend on the plants for food.
About forty percent of all native plants in California are endemic, meaning they are found only in that state. The new study says that for two out of three endemic plants, the areas where they are found could shrink by more than eighty percent. That, they say, is the worst possible case.
The researchers point out that there are many things they cannot be sure about. That includes how much warming to expect in the future from releases of heat-trapping greenhouse gases. Also, they cannot be sure what will happen to individual species of plants.

Still, they say California's coastal redwood trees, for example, could move farther north. California oak trees could disappear from the central part of the state. Professor Ackerly says established trees could survive, but seedlings would not grow. Oaks could move to cooler weather in the Klamath Mountains along the border with Oregon.

The Central Valley of California could become the new home for plants now found in the Sonoran desert of Mexico.
The study says people who protect or manage natural areas will need to plan for the possible movement of so-called refugee plants. The researchers identified places around California where large numbers of plants hit hardest by climate change are expected to relocate.
But they say many of these areas are already under increasing pressure from development. They say it is not too early to prepare for helping plants re-establish themselves in new areas.
The Berkeley study also involved researchers from Duke University and other schools. The findings can be read online in PLoS One, a journal published by the Public Library of Science.

Attention please!
Marks will be given to anyone who translate or give any related remarks or pictures
最后由 liumagnes 于 2008-07-07 09:02:44编辑

本贴源自爱词霸沙龙，网址：http://sl.iciba.com/viewthread-22-460128-1.shtml 复制地址顶它一下 (1)

There can be miracles when you believe.

楼主 Date: 2008-07-01 22:00:34

清香一叶

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2 积分给清香一叶

Sofa...

沙发 Date: 2008-07-01 22:06:01

月影下的孤单

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哇塞。。沙发！！！

板凳 Date: 2008-07-01 22:06:38

月影下的孤单

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。。。。。只有板凳了。。

4 楼 Date: 2008-07-01 22:06:50

清香一叶

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哈哈，还来得及抢个沙发坐坐！！！

5 楼 Date: 2008-07-01 22:06:51

月影下的孤单

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清香还没下哪。。。

6 楼 Date: 2008-07-01 22:07:14

liumagnes

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哇你们太快啦

7 楼 Date: 2008-07-01 22:07:49

清香一叶

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引用月影下的孤单于2008-07-01 22:06发表的文章:
。。。。。只有板凳了。。

哈哈，“孤单”偶快你一步！
承让啦！

8 楼 Date: 2008-07-01 22:08:33

清香一叶

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引用月影下的孤单于2008-07-01 22:06发表的文章:
。。。。。只有板凳了。。

哈哈，“孤单”偶快你一步！
承让啦！

9 楼 Date: 2008-07-01 22:09:20

xia521he

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Scientists say California's coastal redwoods are among plant species that could be affected by climate change

10 楼 Date: 2008-07-02 05:46:46

liumagnes

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引用清香一叶于2008-07-01 22:06发表的文章:

哈哈，还来得及抢个沙发坐坐！！！

MM 临时前还强了个沙发

11 楼 Date: 2008-07-02 08:39:03

liumagnes

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引用liumagnes于2008-07-02 08:39发表的文章:
MM 临睡前还强了个沙发

最后由 liumagnes 于 2008-07-05 18:53:17编辑

12 楼 Date: 2008-07-05 18:52:57

无忧云淡

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California has more than two thousand kinds of plants that are not found anywhere else. A new study says climate change could severely affect these plants by the end of the century.
加利福尼亚有两千多种植物,这些植物在别的地方是找不到的.一项新的研究发现到本世纪末气候改变能够严重地影响这些植物的生长.

13 楼 Date: 2008-07-08 09:49:10

Jesus Christ

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The researchers point out that there are many things they cannot be sure about. That includes how much warming to expect in the future from releases of heat-trapping greenhouse gases. Also, they cannot be sure what will happen to individual species of plants.
研究人员指出，还有很多事情他们也无法确定。其中包括了温室效应的远期全球变暖的影响及个别物种将发生的变化。

14 楼 Date: 2008-07-08 11:37:00