典型文献
Identification of terrigenous and autochthonous organic carbon in sediment cores from cascade reservoirs in the upper stream of Pearl River and Wujiang River,southwest China:lignin phenol as a tracer
文献摘要：
Organic carbon(OC)source attribution for cas-cade reservoir sediments has been identified as a critical gap in understanding the effective carbon sink of inland waters.In this study,nine sediment cores were collected from cascade reservoirs in the Wujiang and Pearl Rivers.We analyzed lignin phenol(A8),total organic carbon(TOC)content,and stable carbon isotopic composition(δ13C)of the sediments,focusing on the changes of ter-rigenous OC,and the variation of OC source in cascade reservoir sediments after damming.Our results showed that the ∑8 and TOC contents decreased from upstream to downstream reservoirs,indicating the significant intercep-tion of terrigenous OC by cascade damming.Additionally,the A8 content in the Pearl River reservoir sediments was much higher than that in the Wujiang River.From the three-end-member mixing model,we estimated that OC in reservoir sediments mainly comes from soil and plankton.After damming,the proportion of plankton OC in TOC slightly increased in seasonal and annual regulation reser-voirs due to the limnetic evolution of the reservoir.These findings suggest that the cascade damming increases the interception capacity of the river to terrigenous OC and nutrients,and that slowing of water velocity caused by damming affected primary productivity and fluvial carbon cycling.
文献关键词：
中图分类号：
作者姓名：
Li Gao;Xin Lin;Jun Fan;Ming Yang;Xueping Chen;Fushun Wang;Jing Ma
作者机构：
School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,China;Shimadzu(Shanghai),Global Laboratory Consumables Co.,Ltd,Shanghai 200233,China
文献出处：
引用格式：
[1]Li Gao;Xin Lin;Jun Fan;Ming Yang;Xueping Chen;Fushun Wang;Jing Ma-.Identification of terrigenous and autochthonous organic carbon in sediment cores from cascade reservoirs in the upper stream of Pearl River and Wujiang River,southwest China:lignin phenol as a tracer)[J].地球化学学报（英文版）,2022(05):753-764
A类：
rigenous,intercep,limnetic
B类：
Identification,terrigenous,autochthonous,organic,carbon,cores,from,cascade,reservoirs,upper,Pearl,Wujiang,southwest,China,lignin,phenol,tracer,Organic,source,attribution,sediments,has,been,identified,critical,gap,understanding,effective,sink,inland,waters,In,this,study,nine,were,collected,Rivers,We,analyzed,A8,total,TOC,stable,isotopic,composition,13C,focusing,changes,variation,after,damming,Our,results,showed,that,contents,decreased,upstream,downstream,indicating,significant,by,Additionally,was,much,higher,than,From,three,end,member,mixing,model,estimated,mainly,comes,soil,plankton,After,proportion,slightly,increased,seasonal,annual,regulation,due,evolution,These,findings,suggest,increases,interception,capacity,river,nutrients,slowing,velocity,caused,affected,primary,productivity,fluvial,cycling
AB值：
0.483985
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