2017-2018年南水北调（中线）水源地水质数据集

本数据集针对南水北调（中线）水源地，包括南阳、十堰、商洛、安康及汉中多个地区，选择6个区域（源头区，秦岭南坡，丹江流域，大巴山北坡，堵河流域及库区）的多个小流域的水样，具体为：汉中市西乡县泾阳河流域，汉中市南郑县的濂水河流域，安康市汉阴县月河流域，安康市黄洋河流域，商洛市丹江源头小流域，商洛市丹凤县武关河流域，商洛市山阳县银花河流域，堵河流域及库区多个小流域。水样按照国家环境保护总局发布的《地表水和污水检测技术规范（HJ/T 91—2002）》进行总氮、总磷、硝酸盐氮、铵态氮、COD、TOC、硫化物、氯化物、挥发酚、总碱度等指标的测定。数据集包含1个数据表，两个工作薄，226个夏季水样和151个冬季水样的14项水质指标数据。数据集根据实地采样以及实验室检测获得，采用完全开放共享。

This dataset targets the water source area of the South-to-North Water Diversion Project (Central Route), covering multiple regions including Nanyang, Shiyan, Shangluo, Ankang and Hanzhong. Water samples were collected from multiple small watersheds in six predefined zones: source area, southern slope of the Qinling Mountains, Danjiang River Basin, northern slope of the Daba Mountains, Duhe River Basin and reservoir area. Specifically, these sampled small watersheds include: Jingyang River Basin in Xixiang County, Hanzhong City; Lianshui River Basin in Nanzheng County, Hanzhong City; Yue River Basin in Hanyin County, Ankang City; Huangyang River Basin in Ankang City; small source watershed of the Danjiang River in Shangluo City; Wuguan River Basin in Danfeng County, Shangluo City; Yinhua River Basin in Shanyang County, Shangluo City; and multiple small watersheds within the Duhe River Basin and its affiliated reservoir area. All water samples were tested for 14 water quality indicators including total nitrogen, total phosphorus, nitrate nitrogen, ammonium nitrogen, COD (Chemical Oxygen Demand), TOC (Total Organic Carbon), sulfide, chloride, volatile phenol, total alkalinity and other relevant parameters, in compliance with the Technical Specifications for Surface Water and Wastewater Monitoring (HJ/T 91—2002) issued by the State Environmental Protection Administration. The dataset consists of 1 data table and 2 worksheets, containing data of the 14 water quality indicators from 226 summer water samples and 151 winter water samples. This dataset is developed based on on-site sampling and laboratory testing, and is fully open and publicly shared.