土壤水分对土壤呼吸的影响  

Influences of Soil Moisture on Soil Respiration

作　　者：邓东周[1,2] 范志平[1] 王红[1,2] 孙学凯[1] 高俊刚[1,2] 曾德慧[1] 张新厚[1,2] 

机构地区：[1]中国科学院沈阳应用生态研究所大青沟沙地生态实验站,辽宁沈阳110016 [2]中国科学院研究生院,北京100039

出　　处：《林业科学研究》2009年第5期722-727,共6页Forest Research

基　　金："十一五"国家科技支撑计划(2006BAC01A12);沈阳市科学技术应用基础研究计划(1063311-1-00);"十一五"国家科技攻关(BA517A02-1);内蒙古自治区"十一五"科技攻关项目资助

摘　　要：土壤呼吸是陆地生态系统碳循环的重要环节,在维持全球碳平衡中发挥着十分重要的作用。全球气候变暖会改变大气环流和全球水文循环,进而导致全球的降水格局发生变化,其最直接的影响就是改变土壤的水分状况,关于土壤水分状况对土壤呼吸的影响机理的研究对于预测未来土壤碳储量变化具有重要意义。本文总结了国内外关于土壤水分对土壤呼吸的影响方面的研究,系统分析了土壤水分是怎样影响土壤呼吸的各组成部分的,并简单介绍了土壤水分对Q10值的影响,最后针对当前相关研究存在的问题,对今后的研究方向加以展望。Soil respiration is an important component of the terrestrial ecosystems carbon cycle, and has great effects on maintaining the balance of global carbon. Global warming is expected to alter patterns of global atmosphere circulation and hydrologic cycling, and this will lead to the change of precipitation regimes on global to regional scales, which will have a direct effect on soil moisture, so it is necessary to study how the change of soil moisture would affect soil respiration for predicting change of soil carbon storage in the future. In this paper, the authors reviewed the studies about the influences of soil moisture change on soil respiration, then analyzed how the change of soil moisture would affect each component of soil respiration systemically, would affect Q10 briefly, finally, it point out the study fields that should be and introduced how the soil moisture emphasized in the future.

关 键 词：土壤呼吸 土壤根呼吸 土壤微生物呼吸 土壤含水量 Q10值 

分 类 号：Q142.3[生物学—生态学] S714[生物学—普通生物学]