氮沉降对土壤呼吸影响研究进展  

Research Advances on Responses of Soil Respiration to Nitrogen Deposition

作　　者：井艳丽[1,2] 袁凤辉[1] 

机构地区：[1]森林与土壤生态国家重点实验室,中国科学院沈阳应用生态研究所,沈阳110016 [2]中国科学院大学,北京100039

出　　处：《世界林业研究》2013年第4期25-31,共7页World Forestry Research

基　　金：国家基础研究发展计划重点项目(2009CB421101);国家自然科学基金项目(30970516)

摘　　要：土壤呼吸是全球碳循环的重要组成部分,土壤呼吸动态变化直接制约全球碳收支状况。近几十年来,全球氮沉降的增加对土壤呼吸产生了深刻影响。文中从土壤呼吸的组成及影响因素入手,综述了土壤呼吸对氮沉降响应的3种结果,即促进、抑制和无影响;从光合作用、凋落物分解、微生物及细根方面阐述了氮沉降影响土壤呼吸的机理,指出未来该领域的研究方向。Soil respiration is the key component of affect the global carbon balance. Global nitrogen global carbon cycles, and its dynamic changes significantly deposition has profoundly influenced soil respiration for recent decades. In this review, we summarized the composition and the influencing factors of soil respiration, and synthesized the three types of responses of soil respiration to nitrogen addition, i.e. , promotion, depression and no effect. The responses of photosynthesis, litter decomposition, microorganism and fine root to nitrogen deposition were analyzed to explore the mechanism of the effects of nitrogen deposition on soil respiration and finally future research hot-spots were proposed.

关 键 词：氮沉降 土壤呼吸 光合作用 微生物 细根 

分 类 号：S714[农业科学—林学]