>In order to understand water chemistry after impoundment of the Three Gorges Reservoir (TGR), the authors assessed the hydrogeochemical '/> δ 13C <sub>DIC</sub> tracing of dissolved inorganic carbon sources at Three Gorges Reservoir, China
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δ 13C DIC tracing of dissolved inorganic carbon sources at Three Gorges Reservoir, China

机译：δ 13 c dic 三峡水库溶解无机碳源追踪

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摘要

>In order to understand water chemistry after impoundment of the Three Gorges Reservoir (TGR), the authors assessed the hydrogeochemical parameters (water temperature, pH, conductivity, dissolved O2), major element composition, and the carbon stable isotopic value of dissolved inorganic carbon (δ13CDIC) in summer and winter at various depths in the water column at TGR in 2009. In reservoir water, the DO values are lower in winter than in summer, but the pH values and conductivity values are higher. Ca2+and Na+are the dominant cations and HCO3?and SO42?are the dominant anions. In surface waters, theδ13CDICvalues are more negative in summer than they are in winter, whereas the dissolved inorganic carbon (DIC) concentrations are relatively lower. In the water column, the DIC andδ13CDICvalues do not change significantly with water depth or seasons. The DIC content shows a dilution effect in summer and is not modified by phytoplanktonic activity or photosynthesis. Even after the dam obstructed flow, the chemical profile of water in TGR is similar to that of the natural rivers before impoundment. Therefore, in this study, the water at TGR still had riverine characteristics and was still a heterotrophic system.]]>
机译：<！[cdata [《Water Science and Technology》 |2018年第2期|共10页
  • 作者

    Qixin Wu; Guilin Han;

  • 作者单位

    Key Laboratory of Karst Environment and Geohazard Ministry of Land and Resources Guizhou University Guiyang 550025 China and College of Resource and Environmental Engineering Guizhou University Guiyang 550025 China;

    School of Scientific Research China University of Geosciences (Beijing) Beijing 100083 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水资源调2查与水利规划;
  • 关键词

    carbon isotope; dissolved inorganic carbon; major ions; Three Gorges Reservoir (TGR);

    机译：碳同位素;溶解无机碳;主要离子;三峡库（TGR）;
  • 入库时间 2022-08-19 19:11:14

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