基于肯德尔法的丹江口水库水质演变趋势研究

为准确把握丹江口水库近5 a来水质变化趋势，有效指导库区的水资源保护和水污染防治工作，采用季节性肯德尔检验法对水库主要污染因子的演变趋势进行了分析研究。结果表明，汉江白河断面TP指标呈现出高度显著增加趋势，丹江湘河断面CODMn指标呈现出显著减少趋势，库中陶岔、凉水河和坝上断面高锰酸盐指数显著增加，浪河口下和坝上断面总磷指标也显著增加。水库水质主要受几条入库支流水质影响，不同支流的主要污染物和来源不同，应采取不同的水污染防控措施。

Research on water quality evolution trend of Danjiangkou Reservoir by Kendall method

In order to accurately grasp the water quality variation trend of Danjiangkou Reservoir in the past five years and effectively guide the reservoir water conservation and water pollution control,the evolution trend of the main pollution indexes in Danjiangkou Reservoir are analyzed by using the seasonal Kendall test method.The results show that TP of Baihe cross-section of the Hanjiang River has a significant increasing trend,and CODMn of Xianghe cross-section of the Danjiang River has a significant reduction trend,while in the middle of reservoir,CODMn of Taocha cross-section,Liangshui River cross-section and Bashang cross-section(in front of the dam) increases obviously,as well as TP of Langhekouxia cross-section and Bashang cross-section.The reservoir water quality is influenced by the main tributaries and different tributaries have different pollutants and sources,thus different pollution control measures should be taken.