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引用本文:李昆,李兆华,陈红兵,李艳蔷,余晓妹,王玲,梅新.丹江口水库上游武当山剑河水质空间差异性分析.湖泊科学,2013,25(5):649-654. DOI:10.18307/2013.0505
LI Kun,LI Zhaohua,CHEN Hongbing,LI Yanqiang,YU Xiaomei,WANG Ling,MEI Xin.Spatial variations of the water quality in Jianhe River of Wudang Mountain in the upper reaches of Danjiangkou Reservoir. J. Lake Sci.2013,25(5):649-654. DOI:10.18307/2013.0505
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丹江口水库上游武当山剑河水质空间差异性分析
李昆, 李兆华, 陈红兵, 李艳蔷, 余晓妹, 王玲, 梅新
湖北大学资源环境学院, 武汉 430062
摘要:
丹江口水库是国家南水北调中线工程的水源地,水质是决定工程成败的关键因素之一,而始终困扰着水库水质的是入库河流的水污染治理问题.本文以丹江口水库上游的武当山剑河流域为研究对象,在水环境调查基础上,选择有代表性的水质参数及人为干扰因子对剑河进行水质空间差异性分析.根据河流地理特征,将剑河划分为上游、中游、下游和太极湖河段调查单元,其水环境管理目标分别为地表水Ⅱ、Ⅲ、Ⅳ、Ⅲ类标准(GB/T 3838 2002).结果表明:在投肥养鱼、污水管网缺损和污水处理率低等因素的影响下,剑河全河段总氮(TN)超标比较严重,4个调查单元均达不到水环境管理目标要求.总磷(TP)、化学需氧量(CODCr)、氨氮(NH3-N)在上游、中游河段分别达到地表水Ⅱ类和Ⅲ类管理要求,但在下游分别只有64%、64%和18%达到Ⅳ类水质要求,在太极湖河段Ⅲ类水质达标率分别为71%、29%和0.污染物浓度整体呈现下游 >太极湖河段 >上游 >中游的趋势,其中TN的污染最为严重,浓度范围为2.27~13.51 mg/L,其次为NH3-N(0.25~13.31 mg/L)、CODCr(7.0~95.5 mg/L)和TP浓度(0.01~0.79 mg/L)相对较低,并不构成剑河的核心污染.通过水质空间差异性分析,提出了针对性的污染源削减方案,可以为河流水污染控制和丹江口水库水质管理提供科学依据.
关键词:  丹江口水库  剑河  小流域  水质  空间差异性
DOI:10.18307/2013.0505
分类号:
基金项目:国家民生科技计划项目(2011MSB5007)资助
Spatial variations of the water quality in Jianhe River of Wudang Mountain in the upper reaches of Danjiangkou Reservoir
LI Kun, LI Zhaohua, CHEN Hongbing, LI Yanqiang, YU Xiaomei, WANG Ling, MEI Xin
Faculty of Resources and Environment, Hubei University, Wuhan 430062, P. R. China
Abstract:
Danjiangkou Reservoir is the water source area of Mid-route of the South-to-North Water Transfer Project in China,and water quality is one of the critical factors to measure the success.However,the water quality has always been troubled by the water pollution control of input rivers of Danjiangkou Reservoir.This paper analyzed the spatial variations of the water quality in Jianhe River by analyzing regional representative factors such as water quality and man-made interferences based on ecological investigation of the water environment.On the basis of river geographical feature,Jianhe River was divided into four survey sections: upstream, midstream,downstream and Taijihu Reservoir,and the objectives of water environmental management were targeted to level Ⅱ, Ⅲ,Ⅳ and Ⅲ (GB/T 3838-2002),respectively.The results show that under the influence of fertilizing aquaculture,lacking sewage network and a low rate in sewage treatment plant,TN of the whole Jianhe River exceeded threshold fairly and four survey sections all cannot reach the objectives of water environmental management;TP,CODCr,and NH3-N reached level Ⅱ and Ⅲ,respectively, in upstream and midstream,while only 64%, 64% and 18% in downstream reached level Ⅳ,and only 71%,29% and 0 in Taijihu Reservoir reached level Ⅲ,respectively.The overall pollution patterns are in the form of downstream >Taijihu Reservoir >upstream >midstream,and the major pollutant in Jianhe River was TN (2.27-13.51 mg/L),followed by NH3-N (0.25-13.31 mg/L),CODCr (7.0-95.5 mg/L) and TP(0.01-0.79 mg/L).Concentrations of CODCr and TP were low and not the main pollutants of Jianhe River.According to the difference analysis of the water quality,the targeted reduction plan was proposed, which provided the scientific basis for better management of water pollution in Danjiangkou Reservoir and water pollution control of the river.
Key words:  Danjiangkou Reservoir  Jianhe River  small watershed  water quality  spatial variation
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