Dynamic carbon-nitrogen coupling under global change

作     者：Shuli Niu Lei Song Jinsong Wang Yiqi Luo Guirui Yu 

作者机构：Key Laboratory of Ecosystem Network Observation and ModellingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 100049China Center for Ecosystem Science and SocietyDepartment of Biological SciencesNorthern Arizona UniversityFlagstaffAZ 86011USA 

出 版 物：《Science China(Life Sciences)》 (中国科学（生命科学英文版）)

年 卷 期：2023年第66卷第4期

页      面：771-782页

核心收录：

学科分类：07[理学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China(31988102) the National Key Research and Development Program of China(2022YFF0802102) 

主　　题：nitrogen limitation carbon-nitrogen interaction global change carbon sequestration soil nitrogen cycle 

摘      要：Carbon-nitrogen coupling is a fundamental principle in ecosystem ***,how the coupling responds to global change has not yet been *** a comprehensive and systematic literature review,we assessed how the dynamics of carbon processes change with increasing nitrogen input and how nitrogen processes change with increasing carbon input under global *** review shows that nitrogen input to the ecosystem mostly stimulates plant primary productivity but inconsistently decreases microbial activities or increases soil carbon sequestration,with nitrogen leaching and nitrogenous gas emission rapidly *** fixation increases and nitrogen leaching decreases to improve soil nitrogen availability and support plant growth and ecosystem carbon sequestration under elevated CO_(2)and temperature or along ecosystem *** conclude that soil nitrogen cycle processes continually adjust to change in response to either overload under nitrogen addition or deficiency under CO_(2)enrichment and ecosystem succession to couple with carbon ***,processes of both carbon and nitrogen cycles continually adjust under global change,leading to dynamic coupling in carbon and nitrogen *** dynamic coupling framework reconciles previous debates on the“uncouplingor“decouplingof ecosystem carbon and nitrogen cycles under global *** models failing to simulate these dynamic adjustments cannot simulate carbonnitrogen coupling nor predict ecosystem carbon sequestration well.