全球降水格局变化下土壤氮循环研究进展  

Research advances in the soil nitrogen cycle under global precipitation pattern change

作　　者：陈琳[1,2] 曾冀 李华[1,2] 刘士玲 雷丽群[1,2] 刘世荣 CHEN Lin;ZENG Ji;LI Hua;LIU Shiling;LEI Liqun;LIU Shirong(Experimental Center of Tropical Forestry,Chinese Academy of Forestry,Pingxiang 532600,China;Guangxi Youyiguan Forest Ecosystem Research Station,Pingxiang 532600,China;Institute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]中国林业科学研究院热带林业实验中心,凭祥532600 [2]广西友谊关森林生态系统国家定位观测研究站,凭祥532600 [3]中国林业科学研究院森林生态环境与保护研究所,北京1000911

出　　处：《生态学报》2020年第20期7543-7551,共9页Acta Ecologica Sinica

基　　金：国家自然科学青年基金项目(31800533);中国林业科学研究院中央级公益性科研院所基金(CAFYBB2017026)。

摘　　要：自然和人为因素导致全球降水格局发生改变,降水变化势必影响土壤氮循环,从而影响陆地生态系统生产力和多样性,然而不同降水变化类型对土壤氮循环的影响仍然缺乏足够的认识。因此,本文综合分析了全球和我国降水格局变化特征,简要介绍了6种降水格局变化下土壤氮循环的研究方法(长期降水固定观测、野外降水控制实验、自然降水梯度、室内培养、模型和遥感),系统综述了3种降水变化类型(降水波动、干旱、干湿交替),以及降水与温度、氮沉降等交互作用对土壤氮循环影响的研究进展与存在的问题,并展望了未来研究方向,为评估和预测未来降水变化对陆地生态系统功能的影响提供理论依据。Natural and human factors have led to the global precipitation pattern changes,which will influence the soil nitrogen cycle processes,and the production and biodiversity of the terrestrial ecosystems.However,the impact of different types of precipitation on soil nitrogen cycle is still insufficiently understood.Therefore,we briefly introduce the global and China precipitation changes,as well as six research methods of soil nitrogen cycle under the change of precipitation pattern(long-term precipitation observation,field precipitation control experiment,natural precipitation gradient,indoor cultivation,model and remote sensing).Furthermore,we summarize the effects of three types of precipitation change(precipitation variation,drought and drying-rewetting event)and the interaction effects between precipitation and other climatic factors,including temperature and nitrogen deposition,on the soil nitrogen cycle,respectively.Finally,we analyze the problems in this field and provide recommendations for what the research directions are in the future.This review will improve assess and predict the response of terrestrial ecosystem functions to the potential precipitation change.

关 键 词：干旱 干湿交替 降水波动 交互作用 土壤氮循环 

分 类 号：S154.1[农业科学—土壤学]