典型文献
Patterns and drivers of CH4 concentration and diffusive flux from a temperate river-reservoir system in North China
文献摘要：
Freshwater reservoirs are regarded as an important anthropogenic source of methane(CH4)emissions.The temporal and spatial variability of CH4 emissions from different reservoirs results in uncertainty in the estimation of the global CH4 budget.In this study,surface wa-ter CH4 concentrations were measured and diffusive CH4 fluxes were estimated via a thin boundary layer model in a temperate river-reservoir system in North China,using spatial(33 sites)and temporal(four seasons)monitoring;the system has experienced intensive aquaculture disturbance.Our results indicated that the dissolved CH4 concentration in the reservoir ranged from 0.07 to 0.58 pmol/L,with an annual average of 0.13±0.10 pmol/L,and the diffusive CH4 flux across the water-air interface ranged from 0.66 to 3.61 μmol/(m2·hr),with an annual average of 1.67±0.75 μmol/(m2shr).During the study period,the dissolved CH4 concentration was supersaturated and was a net source of atmospheric CH4.Notably,CH4 concentration and diffusive flux portrayed large temporal and spatial heterogeneity.The river inflow zone was determined to be a hotspot for CH4 emissions,and its flux was significantly higher than that of the tributary and main basin;the CH4 flux in autumn was greater than that in other seasons.We also deduced that the CH4 concentration/diffusive flux was co-regulated mainly by water temperature,water depth,and water productivity(Chla,trophic status).Our results highlight the importance of considering the spatiotempo-ral variability of diffusive CH4 flux from temperate reservoirs to estimate the CH4 budget at regional and global scales.
文献关键词：
中图分类号：
作者姓名：
Fanyan Yang;Jicheng Zhong;Shaoming Wang;Xiaokang Hu;Hongwei Wang;Mengyao Tang;Min Zhang;Chuanzhe Sun;Lei Zhang
作者机构：
State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070,China;Bureau of Luanhe Diversion Project,Haihe Water Conservancy Commission,Ministry of Water Resources,Qianxi 064309,China;University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Fanyan Yang;Jicheng Zhong;Shaoming Wang;Xiaokang Hu;Hongwei Wang;Mengyao Tang;Min Zhang;Chuanzhe Sun;Lei Zhang-.Patterns and drivers of CH4 concentration and diffusive flux from a temperate river-reservoir system in North China)[J].环境科学学报（英文版）,2022(06):184-197
A类：
m2shr,spatiotempo
B类：
Patterns,drivers,CH4,diffusive,from,temperate,system,North,China,Freshwater,reservoirs,are,regarded,important,anthropogenic,source,methane,emissions,temporal,spatial,variability,different,results,uncertainty,estimation,global,budget,In,this,study,surface,concentrations,were,measured,fluxes,estimated,via,thin,boundary,layer,model,using,sites,four,seasons,monitoring,has,experienced,intensive,aquaculture,disturbance,Our,indicated,that,dissolved,ranged,pmol,annual,average,across,air,interface,During,period,was,supersaturated,net,atmospheric,Notably,portrayed,large,heterogeneity,inflow,zone,determined,be,hotspot,its,significantly,higher,tributary,basin,autumn,greater,other,We,also,deduced,regulated,mainly,by,temperature,depth,productivity,Chla,trophic,status,highlight,importance,considering,regional,scales
AB值：
0.459524
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
