雅鲁藏布江上游夏季水化学特征数据集（2020）

为探究雅鲁藏布江上游干支流的无机水化学特征，于2020 年8 月在雅鲁藏布江上游河源和河流段采集干支流水样。现场用100ml聚乙烯（PE）塑料瓶采集河水并使用多参水质监测仪（YSI-EX02,USA）原位测定采样点的pH值（±0.2）、溶解氧（DO）（±1%）等基本理化参数，并用0.025mol/L的HCl滴定HCO3-浓度。在实验室内采用离子色谱仪（盛瀚CIC-D160型，中国）分析测定Na+、K+、Ca2+、Mg2+、SO42-、NO3-、Cl-离子浓度。采用Gibbs模型、相关性分析、主成分分析等方法，分析了雅江上游干支流主要离子浓度变化、河水水化学组成特征，并对离子来源进行了解析，旨在揭示青藏高原冰川融水径流的无机水化学特征，并为高原地区典型河流的水源解析及变化趋势预估提供基础支撑。

To investigate the inorganic hydrochemical characteristics of the main stream and its tributaries in the upper reaches of the Yarlung Zangbo River, water samples were collected from the headwaters and river segments of the upper Yarlung Zangbo River in August 2020. On-site, river water was collected using 100 mL polyethylene (PE) plastic bottles, and basic physicochemical parameters such as pH (±0.2) and dissolved oxygen (DO) (±1%) at the sampling sites were measured in situ with a multi-parameter water quality monitor (YSI-EX02, USA). The concentration of HCO3- was titrated using 0.025 mol/L HCl. In the laboratory, the concentrations of Na+, K+, Ca2+, Mg2+, SO42-, NO3- and Cl- were analyzed and determined with an ion chromatograph (Shenghan CIC-D160, China). Methods including Gibbs model, correlation analysis and principal component analysis were applied to analyze the variations of major ion concentrations and hydrochemical composition characteristics of the river water in the main stream and its tributaries of the upper Yarlung Zangbo River, and to apportion the sources of these ions. This study aims to reveal the inorganic hydrochemical characteristics of glacier meltwater runoff in the Qinghai-Tibet Plateau, and provide fundamental support for water source identification and change trend prediction of typical rivers in plateau regions.

搜集汇总

背景与挑战

背景概述

该数据集记录了2020年8月雅鲁藏布江上游干支流的无机水化学特征，包括主要离子浓度和理化性质等数据，旨在揭示青藏高原冰川融水径流的无机水化学特征，为高原地区典型河流的水源解析及变化趋势预估提供基础支撑。数据以Excel格式提供，包含多个表格，详细展示了采样点理化性质、主要离子含量及相关分析结果。