Hydro-Geochemistry and Genesis of Major Ions in the Yangtze River, China

• 责任者：Wang Yaping (National Research Center for Geoanalysis ; Beijing 100037 ; China) ; Wang Lan
• 刊名：Geological Bulletin of China
• 出版年：2010
• 卷期：29(2/3)
• 关键词：水文地球化学 ; hydrogeochemistry ; 长江流域 ; Yangtze River valley
• 页码：p.446-456
• 图表：9 illus., 2 tables, 11 refs.
• 分类号：1701
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

Based on the data of 76 water samples of the Yangtze River (36 of them located in the main stream and 40 of them in major tributaries and anabranches), the effect of lithology and main weathering process of the river water have been studied by means of statistical approaches such as Gibbs figure, Triangle plot and principal component analysis  (PCA). The results show that the geochemistries of major ions in the Yangtze River are mainly controlled by rock weathering. Among them, carbonates and evaporates account for 43.6% and 37.9% of total ion equivalent concentration for the main stream, while the contributions for tributaries are 33.1% and 39.1%, respectively.