SSS 2012-04-11
时间：2019-01-08 作者：英语课 分类：Scientific American(四)月
英语课
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 ecosystems 1 to lower warmer elevations 2. They also motivate the precipitation at the transplants sites based on auto 3 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 immediate 4 growth but in the long term we can't expect plants to like a hot.
n.生态系统( ecosystem的名词复数 )
- 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
（水平或数量）提高( elevation的名词复数 )； 高地； 海拔； 提升
- 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。
n.(=automobile)(口语)汽车
- 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。