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丹江口水库湖北库区水质分区及长期变化趋势
引用本文:张煦,熊晶,程继雄,姚志鹏.丹江口水库湖北库区水质分区及长期变化趋势[J].中国环境监测,2016,32(1):64-69.
作者姓名:张煦  熊晶  程继雄  姚志鹏
作者单位:湖北省环境监测中心站, 湖北 武汉 430072,湖北省环境监测中心站, 湖北 武汉 430072,湖北省环境监测中心站, 湖北 武汉 430072,中国环境监测总站, 国家环境保护环境监测质量控制重点实验室, 北京 100012
基金项目:国家科技支撑计划项目"南水北调中线工程水源地及沿线水质监测预警关键技术研究与示范"(2011BAC12B01-01,2011BAC12B02-01)
摘    要:丹江口水库是南水北调中线工程水源地,准确地掌握丹江口水库水环境质量状况变化情况,对保障调水工程顺利进行有着极其重要的意义。基于水质理化指标将丹江口水库湖北库区水域划分为4个区,各分区的主要物理指标存在显著差异,化学指标较为均一;近10年水质历史监测数据显示,湖北库区除总氮指标外,其余监测指标水质类别均达到或优于Ⅱ类,总体水质保持优良;氨氮、总磷、总氮3项指标年均浓度从2007年起呈增加趋势,在2011年后均有所降低并趋于稳定。农业面源污染对丹江口水库水质影响较大。目前采取的各项环保措施对丹江口水库的水质产生了积极的影响,需继续加大各项治理措施的实施力度,完善水质监测系统,保障丹江口水库水质安全。

关 键 词:丹江口水库  水质分区  变化趋势  聚类分析
收稿时间:2015/2/10 0:00:00
修稿时间:2015/6/21 0:00:00

The Spatial Distribution and Long-term Variation Trend of Water Quality of Danjiangkou Reservoir in Hubei Province
ZHANG Xu,XIONG Jing,CHENG Jixiong and YAO Zhipeng.The Spatial Distribution and Long-term Variation Trend of Water Quality of Danjiangkou Reservoir in Hubei Province[J].Environmental Monitoring in China,2016,32(1):64-69.
Authors:ZHANG Xu  XIONG Jing  CHENG Jixiong and YAO Zhipeng
Institution:Hubei Province Environmental Monitoring Centre, Wuhan 430072, China,Hubei Province Environmental Monitoring Centre, Wuhan 430072, China,Hubei Province Environmental Monitoring Centre, Wuhan 430072, China and State Environmental Protection Key Laboratory of Quality Control in Environmental Monitoring, China National Environmental Monitoring Centre, Beijing 100012, China
Abstract:Since Danjiangkou Reservoir is the water source for the Middle Route of South-to-North Water Diversion Project, precisely monitoring the variations of water quality in Danjiangkou Reservoir is of great importance for ensuring the success of the water diversion project. In this study, the water area of Danjiangkou Reservoir in Hubei Province was divided into four districts based on the physical and chemical index of water quality, each of which differed significantly according to the main physical index, its chemical index, however, indicated no significant difference; it is demonstrated from the historical monitoring data of water quality in the recent decade that apart from the Total Nitrogen Index, the rest water quality monitoring indexes of Hubei Province all reached or better than the class II with the overall water quality remained at good level; the annual average concentrations of Ammonia Nitrogen, Total Phosphorus and Total Nitrogen Index showed an uptrend from 2007 and became gradually stable after a drop since 2011. Water quality of Danjiangkou Reservoir had been greatly influenced by agricultural non-point source pollution. Positive effects have been brought to it by various environmental protection measures adopted in these days, however, it is still required to keep strengthening the implementations of every preventing and controlling measures and perfecting water quality monitoring system, in order to ensure the safety of water quality in Danjiangkou Reservoir.
Keywords:The Danjiangkou Reservoir  spatial distribution of water quality  variation trend  hierarchical cluster analysis
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