Lateral detrital C transfer across a Spartina alternifora invaded estuarine wetland

作     者：Yu Gao Jiquan Chen Tingting Zhang Bin Zhao Steven McNulty Haiqiang Guo Feng Zhao Ping Zhuang 

作者机构：Key Laboratory of East China Sea&Oceanic Fishery Resources Exploitation and UtilizationScientifc Observing and Experimental Station of Fisheries Resources and Environment of East China Sea and Yangtze EstuaryEast China Sea Fisheries Research InstituteChinese Academy of Fishery SciencesShanghai 200090China. Ministry of Education Key Laboratory for Biodiversity Science and Ecological EngineeringCoastal Ecosystems Research Station of the Yangtze River Estuaryand Institute of Eco-Chongming(IEC)Fudan UniversityShanghai 200438China. Department of Geological SciencesUniversity of Texas at AustinAustinTX 78712USA. Department of Geography and Center for Global Change and Earth Observations(CGCEO)Michigan State UniversityEast LansingMI 48824USA. Eastern Forest Environmental Threat Assessment CenterSouthern Research StationUSDA Forest ServiceResearch Triangle ParkNC 27709USA. 

出 版 物：《Ecological Processes》 (生态过程（英文）)

年 卷 期：2021年第10卷第1期

页      面：980-998页

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 Open Research Fund of the State Key Laboratory of Estuarine and Coastal Research(Grant No.SKLEC-KF201912) the Foundation of Key Laboratory of Yangtze River Water Environment,Ministry of Education(Tongji University),China,(Grant No.YRWEF202105) the Natural Science Fund of Shanghai(Grant No.19ZR1470300) the Natural Science Foundation of China(Grant No.32071584) the Special Fund for Natural Resources Development of Jiangsu Province(Marine Science and Technology Innovation)(Grant No.JSZRHYKJ202109) the Central Public-interest Scientifc Institution Basal Research Fund,ECSFR,CAFS(Grant No.2021M04) 

主　　题：Estuarine wetland Carbon outwelling Lateral carbon fux Methane emission Spartina alternifora Phragmites australis 

摘      要：Background:The lateral movements of mass and energy across the terrestrial-aquatic interface are being increasingly recognized for their importance in the carbon(C)balance of coastal/estuarine *** quantifed the lateral fux of detrital C in the Yangtze estuary where invasive Spartina alternifora has substantially and extensively altered the ecosystem structure and *** overall objective was to close the C budget of estuarine wetlands through feld sampling,tower-based measurements,and ***:A lateral detrital C exchange evaluation platform was established in a case study of the Yangtze River Estuary to investigate the efect of ecosystem structural changes on lateral detrital C transfer *** study estimated the lateral detrital C exchange based on the gross primary production(GPP)by performing coupled modeling and feld ***-based measurements and MODIS time series and CH4 outgassing and biomass simultaneously measured the lateral detrital C fux to characterize the relative contributions of lateral(i.e.,detritus)C fuxes to the annual marsh C ***:The C pools in the plants and soil of Spartina marshes were signifcantly higher than those of the native community dominated by Phragmites *** GPP based on MODIS(GPPMODIS)was 472.6 g C m^(−2) year^(−1) and accounted for 73.0%of the GPP estimated from eddy covariance towers(GPPEC)(646.9±70.7 g C m^(−2) year^(−1)).We also detected a higher GPPMODIS during the pre-growing season,which exhibited a similar lateral detrital C fux *** average,25.8%of the net primary production(NPP),which ranged from 0.21 to 0.30 kg C m^(−2) year^(−1),was exported during lateral *** annual C loss as CH4 was estimated to be 17.9±3.7 g C m^(−2) year^(−1),accounting for 2.8%of the *** net positive detrital C fux(i.e.,more detritus leaving the wetlands),which could exceed 0.16 kg C m^(−2) day^(-1),was related to daily ***,the observed lateral detrital C fu