摘要
为了定量分析人口增长、经济发展、资源短缺和环境污染等因素对流域水环境的综合影响,对赣江流域水环境承载能力进行评价。根据水环境承载力的基本概念,选取适当的水资源和水质量承载力指标,运用指标体系评价法分别计算2006-2010年赣江水环境承载力。结果表明,流域人口、灌溉面积的承载度最大值达到0.90和0.96,均有超过水环境承载力的趋势;GDP承载度最大值为0.38,仍有较大的发展空间。富营养化指标TN均大于1,一直处于负荷承载;TP 5年平均承载度为0.9,有超过承载力的趋势;COD的承载度在0.3周围波动,较为良好。赣江流域水环境承载力为负承载,水质量承载力影响程度更大。
The comprehensive effect of population growth,economic development,resources shortage and environment pollution on the water environment of the Ganjiang River are quantitatively assessed in the study.Besides,water environment carrying capacity （WECC） of the Ganjiang River is evaluated by analytic hierarchy process （AHP）.According to the basic concept of WECC,appropriate indexes of water resources carrying capacity （WRCC） and water quality carrying capacity （WQCC） are selected to calculate WECC from 2006 to 2010.Results indicate that population and irrigation has the trend of exceeding the carrying standard,of which the maximum carrying capacity are 0.90 and 0.96,respectively.As for gross domestic product （GDP）,it is 0.38,where there is space for development.The carrying capacity of the eutrophication index TN exceeds 1.0,which is overloaded.The mean carrying capacity of TP is 0.9,with the trend of exceeding the carrying standard.However,the COD carrying capacity is relatively sanguine,with a fluctuation around 0.3.The overloaded WECC is in accordance with the real conditions of the Ganjiang River and the WQCC has greater influence than the WRCC.
出处
《中国农村水利水电》
北大核心
2014年第1期86-89,92,共5页
China Rural Water and Hydropower
基金
国家水体污染控制与治理科技重大专项(2008zx07526-008-03)
国际科技合作资助项目(2006DFB91920)
"十一五"国家科技支撑计划重点项目(2007BAB23CO2)
国家自然科学基金(40672159)
中国经济改革实施技术援助项目(支援期TCC5jxspyhzxh09-03)
鄱阳湖环境与资源利用重点实验室支持项目(13005879
13005870)
关键词
赣江流域
水环境承载力
变化特性
Ganjiang River
water environment carrying capacity
dynamic variation characteristics
