草地生态系统土壤有机碳库对人为干扰和全球变化的响应研究进展

被引:52
作者
肖胜生 [1 ,2 ]
董云社 [1 ]
齐玉春 [1 ]
彭琴 [1 ,2 ]
何亚婷 [1 ,2 ]
杨智杰 [3 ]
机构
[1] 中国科学院地理科学与资源研究所
[2] 中国科学院研究生院
[3] 湿润亚热带生态—地理过程省部共建教育部重点实验室
基金
国家科技攻关计划; 国家自然科学基金重点项目;
关键词
草地生态系统; 土壤有机碳; 土壤活性碳; 全球变化;
D O I
暂无
中图分类号
X171 [生态系统与污染生态学];
学科分类号
071012 ; 0713 ;
摘要
草地土壤碳库碳储量及其变化与调控机制是草地碳循环研究的核心。草地生态系统正经受着越来越严重的人为与自然因素干扰,如土地利用变化、大气氮沉降增加、施肥及大气CO2浓度与温度升高。因此,加强人为干扰和全球变化背景下草地土壤有机碳库的响应研究有重要意义。总结了放牧、草地开垦及外来氮素输入等3种主要的人类活动对土壤有机碳总量和活性碳组分的影响及其对全球变化的响应与适应,在此基础上指出了目前草地生态系统土壤有机碳库研究的薄弱环节及今后的重点研究领域。
引用
收藏
页码:1138 / 1148
页数:11
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