摘要
N_(2)O是三大重要温室气体之一,同时它还破坏臭氧层,其损失的多寡还决定着土壤中氮养分存量。近年来,土壤N_(2)O排放对氮沉降等全球变化因子的响应备受关注,但相关研究多集中在生长季,针对非生长季特别是冻融期的研究还十分薄弱。本文梳理了现有文献,归纳总结了氮沉降对非生长季冻融期土壤N_(2)O排放的影响效应,并从土壤理化性质和土壤微生物学特征变化等方面论述了氮沉降对冻融期土壤N_(2)O排放的可能影响机制,指出了现有研究中的不足,并对未来研究进行了展望,以期为进一步深入认识和研究全球变化背景下土壤N_(2)O的排放特征、驱动机制以及进一步采取有效措施控制土壤N_(2)O的排放提供参考依据。
N_(2)O is one of the three most important greenhouse gases,which could destroy the ozone layer.The N_(2)O loss from soil determines the status of soil nitrogen stock.In recent years,the response of soil N_(2)O emission to glo-bal change factors such as nitrogen deposition has attracted extensive attention.However,most studies are concentrated in the growing season,and less focuses on the non-growing season,especially in the freezing-thawing period.By reviewing the existing literature,we summarized the impacts of nitrogen deposition on soil N_(2)O emission in non-growing season,and discussed the possible mechanisms underlying the impacts of nitrogen deposition on soil N_(2)O emission in freezing-thawing period from the aspects of soil physical and chemical properties and soil microbiological characteristics.We pointed out the shortcomings of previous researches,and put forward to research direction,aiming at providing a reference for in-depth understanding of emission characteristics of soil N_(2)O and its driving mechanism under the background of global change,and for further taking effective measures to control soil N_(2)O emission.
作者
刘彦琪
彭琴
齐玉春
李兆林
胡蓓蓓
董云社
LIU Yan-qi;PENG Qin;QI Yu-chun;LI Zhao-lin;HU Bei-bei;DONG Yun-she(College of Geography and Environmental Sciences,Tianjin Normal University,Tianjin 300387,China;Key Laboratory of Land Surface Pattern and Simulation,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2022年第11期2245-2253,共9页
Chinese Journal of Ecology
基金
国家自然科学基金项目(41673086,42177224)资助。
关键词
冻融作用
氮水平
氮形态
N_(2)O
微生物机制
freezing-thawing effect
nitrogen deposition level
nitrogen form
N_(2)O
microbial mechanism
