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

被引:29
作者
尹飞虎 [1 ]
李晓兰 [1 ]
董云社 [1 ,2 ]
谢宗铭 [1 ]
高志建 [1 ]
何帅 [1 ]
刘长勇 [1 ]
机构
[1] 新疆农垦科学院
[2] 中国科学院地理科学与资源研究所
关键词
干旱半干旱区; CO2浓度; 生态系统; 碳氮耦合;
D O I
暂无
中图分类号
P402 [大气化学];
学科分类号
070602 ;
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。碳循环是生态系统重要的能量流通渠道;氮是生态系统最重要的营养元素之一,也是生态系统固碳能力的限制因子。因此,加强碳氮耦合关系的探讨对研究全球气候及生态系统变化具有重要意义。对干旱半干旱区CO2浓度升高对生态系统的影响及碳氮耦合的研究进展进行了综述和讨论,为进一步研究干旱半干旱区碳、氮循环提供参考。
引用
收藏
页码:235 / 244
页数:10
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