Impact of warming and nitrogen addition on soil greenhouse gas fluxes:A global perspective  

作　　者：Hongze Ma Xiaoyu Jia Weiguang Chen Jingyi Yang Jin Liu Xiaoshan Zhang Ke Cui Zhouping Shangguan Weiming Yan 

机构地区：[1]State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,College of Soil and Water Conservation Science and Engineering,Northwest A&F University,Yangling,Shaanxi 712100,China [2]Institute of Soil and Water Conservation,Chinese Academy of Sciences,Yangling,Shaanxi 712100,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]Shaanxi Institute of Geo-Environment Monitoring,Xi’an 710000,China

出　　处：《Journal of Environmental Sciences》2025年第5期88-99,共12页环境科学学报(英文版)

基　　金：supported by Ningxia Key Research and Development Fund Project of China(No.2023BCF01048);the Natural Science Basic Research Plan in Shaanxi Province of China(No.2023-JC-YB-182).

摘　　要：Global warming and nitrogen(N)deposition have a profound impact on greenhouse gas(GHG)fluxes and consequently,they also affect climate change.However,the global combined effects of warming and N addition on GHG fluxes remain to be fully understood.To address this knowledge gap,a globalmeta-analysis of 197 datasets was performed to assess the response of GHG fluxes to warming and N addition and their interactions under various climate and experimental conditions.The results indicate that warming significantly increased CO_(2)emissions,while N addition and the combined warming and N addition treatments had no impact on CO_(2)emissions.Moreover,both warming and N addition and their interactions exhibited positive effects on N_(2)O emissions.Under the combined warming and N addition treatments,warming was observed to exert a positive main effect on CO_(2)emissions,while N addition had a positive main effect on N_(2)O emissions.The interactive effects of warming and N addition exhibited antagonistic effects on CO_(2),N_(2)O,and CH_(4)emissions,with CH_(4)uptake dominated by additive effects.Furthermore,we identified biome and climate factors as the two treatments.These findings indicate that both warming and N addition substantially impact soil GHG fluxes and highlight the urgent need to investigate the influence of the combination of warming and N addition on terrestrial carbon and N cycling under ongoing global change.

关 键 词：WARMING Nitrogen(N)addition Greenhouse gas(GHG)fluxes Interactive effects BIOME 

分 类 号：X173[环境科学与工程—环境科学] X515