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SSS 2012-04-11

时间:2012-05-09 07:24来源:互联网 提供网友:gmeng   字体: [ ]
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 Global warming might seem like a mechanic boom after all milder temperatures in more carbon dioxide and nitrogen should feed flower. But ten years study has found that any initial positive effect on plants from climate change may soon disappear. The report in the journal Nature Climate Change. Researchers transplanted vegetation from four grass land ecosystems1 to lower warmer elevations2. They also motivate the precipitation at the transplants sites based on auto3 rain for estimates. For the first year, the plants did agree producing more biomass and churning more oxygen for us. But the productivity went down for the rest of the decade, what happened? Warming did speed up the nitrogen cycle which should have increased nitrogen's ability as plant fertilizer. But lot of the nitrogen left the soil through run off or uptaken to the atmosphere. In addition productive native plants begin to lose out species that thrive at higher temperatures but less productive than the natives. Warmers temperature may spur immediate4 growth but in the long term we can't expect plants to like a hot.

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1 ecosystems 94cb0e40a815bea1157ac8aab9a5380d     
n.生态系统( ecosystem的名词复数 )
参考例句:
  • There are highly sensitive and delicately balanced ecosystems in the forest. 森林里有高度敏感、灵敏平衡的各种生态系统。 来自《简明英汉词典》
  • Madagascar's ecosystems range from rainforest to semi-desert. 马达加斯加生态系统类型多样,从雨林到半荒漠等不一而足。 来自辞典例句
2 elevations cb4bbe1b6e824c996fd92d711884a9f2     
(水平或数量)提高( elevation的名词复数 ); 高地; 海拔; 提升
参考例句:
  • Weight of the crust changes as elevations are eroded and materials are deposited elsewhere. 当高地受到侵蚀,物质沉积到别的地方时,地壳的重量就改变。
  • All deck elevations are on the top of structural beams. 所有甲板标高线均指结构梁顶线。
3 auto ZOnyW     
n.(=automobile)(口语)汽车
参考例句:
  • Don't park your auto here.别把你的汽车停在这儿。
  • The auto industry has brought many people to Detroit.汽车工业把许多人吸引到了底特律。
4 immediate aapxh     
adj.立即的;直接的,最接近的;紧靠的
参考例句:
  • His immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
  • We declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。
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