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青藏高原中部湖泊与河流水化学特征初步研究

发表时间:2016-09-30  浏览量:1270  下载量:425
全部作者: 张江燕,雷国良,宋瑞卿,郑玉萍
作者单位: 福建师范大学地理研究所;福建师范大学湿润亚热带山地生态国家重点实验室培育基地
摘 要: 青藏高原中部不同位置的湖泊和河流水体的水化学分析显示,青藏高原中部河流离子组成以 -Ca2+为主,其中Ca2+和 分别占阳离子总量的55.0%和阴离子总量的72.6%. 而湖泊的主要阳离子是Na+,占其阳离子总量的89.6%. 就类型而言,碳酸盐型、硫酸盐型和氯化物型等类型湖泊在高原中部均有分布,且主要以碳酸盐型湖泊和硫酸盐型湖泊为主。就水体离子浓度而言,青藏高原湖泊主要受蒸发-结晶作用控制,而河水则主要受岩石风化作用影响。河流Na/K、Mg/Ca与土壤中Na/K、Mg/Ca较为接近,且呈现一致的空间变化特征,表明河流水体中的元素特征反映了区域土壤的元素特征。
关 键 词: 自然地理学;青藏高原中部;湖泊;河流;水化学特征
Title: Water Chemistry of Lake and River in the central Tibetan Plateau
Author: ZHANG Jiangyan, LEI Guoliang, SONG Ruiqing, ZHENG Yuping
Organization: Institute of Geography, Fujian Normal University,State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University
Abstract: The water chemistry of different sites of lake and river water in the central Tibetan plateau analysis shows that the ions of water reflect the environment characteristics of different area of the central Tibetan plateau. Ca2+ and are the dominant ions of river water, occupying 55.0% of the total cations and 72.6% of the anions respectively. While for lake water, Na+ is the main cation with the proportion of 89.6% of the total cations. In terms of type, carbonate type, sulfate type and chloride type and other types of lakes in the central Tibetan plateau have distribution, and mainly gives priority to carbonate type and sulfate type lakes. On the water ion concentration, the central Tibetan plateau lakes are mainly controlled by evaporation-crystallization effect, and the water in the rivers are mainly influenced by rock weathering function. The Na/K and Mg/Ca which are in the river are relatively close to those in soil and consistent with the spatial variability characteristics, indicates that the element features of the river water reflects the element characteristics of regional soil.
Key words: physical geography; central Tibetan plateau; lake; river; water chemistry characteristics
发表期数: 2016年9月第18期
引用格式: 张江燕,雷国良,宋瑞卿,等. 青藏高原中部湖泊与河流水化学特征初步研究[J]. 中国科技论文在线精品论文,2016,9(18):1922-1929.
 
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