| 干旱半干旱区CO2浓度升高对生态系统的影响及碳氮耦合研究进展 |
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| 引用本文： | 尹飞虎,李晓兰,董云社,谢宗铭,高志建,何帅,刘长勇.干旱半干旱区CO2浓度升高对生态系统的影响及碳氮耦合研究进展[J].地球科学进展,2011,26(2):235-244. |
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| 作者姓名： | 尹飞虎 李晓兰 董云社 谢宗铭 高志建 何帅 刘长勇 |
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| 作者单位： | 尹飞虎,李晓兰,谢宗铭,高志建,何帅,刘长勇,Yin Feihu,Li Xiaolan,Xie Zongming,Gao Zhijian,He Shuai,Liu Changyong(新疆农垦科学院,新疆,石河子,832000);董云社,Dong Yunshe(新疆农垦科学院,新疆,石河子,832000;中国科学院地理科学与资源研究所,北京,100101) |
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| 基金项目： | 国家自然科学基金项目，国家高技术研究发展计划项目，兵团科技攻关计划项目 |
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| 摘 要： | 大气CO2浓度升高已成为全球备受关注的环境问题.CO2排放量的增加加剧了地球表层的温室效应,也对生态系统的结构和功能产生了重要影响.生态系统对CO2浓度升高的响应是一个长期的过程.在干旱半干旱区,CO2浓度的升高对生态系统生产力、植物、土壤和微生物等都有影响,尤其改变了生态系统中的碳循环,并加剧了生态系统对氮的需求.碳...
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| 关 键 词： | 干旱半干旱区 CO2浓度 生态系统 碳氮耦合 |
Effect of Elevated CO_2 on Ecosystem and C-N Coupling in Arid and Semi-arid Region |
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| Yin Feihu,Li Xiaolan,Dong Yunshe,Xie Zongming,Gao Zhijian,He Shuai,Liu Changyong.Effect of Elevated CO_2 on Ecosystem and C-N Coupling in Arid and Semi-arid Region[J].Advance in Earth Sciences,2011,26(2):235-244. |
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| Authors: | Yin Feihu Li Xiaolan Dong Yunshe Xie Zongming Gao Zhijian He Shuai Liu Changyong |
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| Institution: | 1. Xinjiang Academy of Agricultural and Reclamation Science, Shihezi832000, China; 2. Institute of Geographic Science and Natural Resources Research, CAS, Beijing100101, China |
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| Abstract: | Atmospheric CO2 concentrations had increased from approximately 280 μmol/mol in the late 19th century to over 360 μmol/mol today.Elevated CO2 not only pricked up global greenhouse effect,but also changed the C balance of global ecosystems,which led to the changes of ecosystem structure and function.Alterations in microbial mineralization and nutrient cycling may control the long-term response of ecosystems to elevated CO2.Elevated CO2 concentrations influenced carbon cycle,ecosystem productivity,plant,soil,microbe,and other environmental factors.The effects of elevated CO2 on growth were highly dependent on interactions with N cycling.Particularly important was the effect of elevated CO2 on N cycling and availability because shortages in N could eventually attenuate the increased plant biomass production seen in short-term elevated CO2 studies.Changes in microbial biomass C and N,microbial activity and inorganic N could indicate the effects of elevated CO2 on N dynamics.Increases in N-use efficiency tended to increase the C/N ratio of plant materials grown in elevated CO2.The purpose of this paper is to summarize the changes of ecosystems and C-N coupling due to the increasing atmospheric CO2 concentration in order to lucubrate to carbon cycle and nitrogen cycle in arid and semi-arid region. |
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| Keywords: | Arid and semi-arid region CO2 concentrations Ecosystem C-N coupling |
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