塔里木河干流水质评价及生态安全性研究

为保护塔里木河下游的生态安全,2000年至2005年,由塔里木河流域管理局等相关部门组织,相继实施了7次向塔河下游绿色走廊应急输水工作。通过对输水前的1998年和输水后的2002年数据进行对比分析塔里木河干流上、下游在输水前后的水质变化状况的分析认为塔河干流水体污染类型为农业污染型,塔河干流水体中的主要污染物是氯化物、硫酸盐和总硬度,塔河干流水体污染产生的主要原因为农业弃水,输水后塔河干流整体污染程度较输水前有所好转,但仍存在水质为五级重污染的断面,由此分析了水质污染对生态安全构成的风险并提出了几点控制塔河干流污染的途径。

Water Quality Assessment and Ecological Security Research in Main Stream of the Tarim River

In order to protect the ecological security of the Tarlm River, from 2000 to 2005, the Tarim River valley administer bureau and other departments organized seven times of transportations water to the Tarim River lower reaches. In this paper, using the data in 1998 and 2002, the comprehensive index method of river water quality assessment is used to contrast the change of water quality in the upper and lower reaches of the Tarim River before and after the transportation. The results revealed that the kind of water pollution in main stream of the Tarim River is agricultural pollution, and the main pollutants are chloride, sulphate and total rigidity. The reason caused water pollution is wastewater drained from farmlands, and the degree of pollution in main stream of the Tarim River after transportation water is better than before, but some cross sections are still bad polluted. Then analyze the risk to ecological security caused by the water pollution and some suggestions are put forward to control pollution.