Stable isotope geochemical characteristics of dissolved inorganic carbon in the Jiulong River Estuary, Fujian Province, China  

作　　者：LIU Qiming WU Qiong CAO Yinglan LIN Jinmei JIAO Yupei 

机构地区：[1]Biotechnology Engineering College, Jimei University [2]Quanzhou Sea and Fishery Bureau [3]Institute of Urban Environment,Chinese Academy of Sciences

出　　处：《Chinese Journal Of Geochemistry》2014年第2期178-182,共5页中国地球化学学报

基　　金：financially supported jointly by the National Natural Science Foundation of China(Grant Nos.40771185 and 51004053);the Fujian Province Natural Science Foundation(D0710021);the Li Shangda Scientific Research Foundation of Jimei University,China(No.ZC2011015)

摘　　要：The isotopic composition of dissolved inorganic carbon(DIC) in estuarine environments has been studied for its significant role in determining the isotopic composition of inorganic/organic matter and its applications to the study of various natural processes. In this paper, based on the stable isotope geochemical characteristics of dissolved inorganic carbon in the Jiulong River Estuary, the following conclusions are drawn:(1) δ13CDIC values are mainly controlled by the mixing ratio of fresh water and sea water;(2) δ13Cphytoplankton values are linearly related to the δ13CDIC values;(3) δ13CPOM values for the Jiulong River Estuary are affected by anthropogenic pollution significantly; and(4) the comprehensive analysis of δ13Cphytoplankton, δ13CPOM and δ13CDIC shows that along with increasing salinity, the proportion of POM derived from the degradation of phytoplanktons gradually increases.The isotopic composition of dissolved inorganic carbon （DIC） in estuarine environments has been studied for its significant role in determining the isotopic composition of inorganic/organic matter and its applications to the study of various natural processes. In this paper, based on the stable isotope geochemical characteristics of dis- solved inorganic carbon in the Jiulong River Estuary, the following conclusions are drawn： （1） δ13CDIC values are mainly controlled by the mixing ratio of fresh water and sea water; （2）δ13Cphytoplankton values are linearly related to the δ13CDIC values; （3） δ13CpoM values for the Jiulong River Estuary are affected by anthropogenic pollution signifi- cantly; and （4） the comprehensive analysis of δ13Cphytoplankton, δ13CpoM and δ13CDIc shows that along with increasing salinity, the proportion of POM derived from the degradation of phytoplanktons gradually increases.

关 键 词：同位素地球化学特征 溶解无机碳 九龙江口 稳定 福建省 同位素组成 九龙江河口 中国 

分 类 号：P342[天文地球—水文科学]