Effects and driving factors of domestic sewage from different sources on nitrous oxide emissions in a bog

作     者：Yue Li Zhongbing Chen Xue Wang Haibo Jiang Chunguang He Yao Shi Lianxi Sheng 

作者机构：State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation RestorationSchool of EnvironmentNortheast Normal UniversityChangchun 130000China Key Laboratory for Vegetation EcologyMinistry of EducationNortheast Normal UniversityChangchun 130000China Department of Applied EcologyFaculty of Environmental SciencesCzech University of Life Sciences PraguePraha-Suchdol 16500Czech Republic College of EngineeringJilin Normal UniversitySiping 136000China 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2024年第17卷第5期

页      面：52-64页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Key R&D Program of China(2022YFF1300900) the National Natural Science Foundation of China(32271624) the Foundation of Jilin Scientifc and Technological Development Project(20220203003SF) the Education Department of Jilin Province(JJKH20230516KJ) 

主　　题：sewage bog N_(2)O flux species richness nitrogen transformation functional microorganism 

摘      要：Direct sewage discharge may enhance soil nitrous oxide(N_(2)O)emissions,worsening the greenhouse ***,the effects of sewage discharge into bogs on N_(2)O flux,drivers and influencing mechanisms remain ***,investigating the impact of reclaimed water on N_(2)O flux is important for bog replenishment and water shortage *** study simulated sewage from different sources into a bog and analyzed N_(2)O fluxes,soil(organic carbon,total nitrogen,ammonium nitrogen,nitrate nitrogen,total phosphorus,available phosphorus,pH and electrical conductivity),plant(species richness and biomass)and microorganisms(ammonia-oxidizing archaea,napA,nirS,nirK and nosZ genes).Results showed that the reclaimed water did not significantly change N_(2)O flux,while 50%tap water mixed with 50%domestic sewage and domestic sewage significantly increased the N_(2)O *** soil factors,available nitrogen and pH were key in influencing N_(2)O *** plant parameters,species richness was the primary factor affecting N_(2)O *** transformation functional genes contributed the most to the increase in the N_(2)O fluxes,with an increase in domestic sewage input leading to a higher abundance of these genes and subsequent N_(2)O ***,domestic sewage should be considered,as it significantly increases N_(2)O emissions by affecting the soil,plants and microorganisms,thereby increasing the global warming *** study’s findings suggest that using treated reclaimed water for bog replenishment could be an environmentally friendly approach to wetland management.