洞庭湖水污染环境经济损害初步评价  

Preliminary assessment of economic loss caused by water pollution in Dongting lake

作　　者：卜跃先 柴铭 

机构地区：[1]湖南省洞庭湖环境保护监测站,湖南沅江413100 [2]湖南省益阳市水电局,湖南益阳413000

出　　处：《人民长江》2001年第4期27-28,36,共3页Yangtze River

摘　　要：运用水污染损失率为基础的评价方法 ,对洞庭湖水体使用功能损害程度进行评价表明 :洞庭湖水已不适合作饮用和游泳水源 (重损害 ,损失率分别为 70 %和 5 8% ) ;主要污染物来自营养物质 ,且以氮为限制性因素。洞庭湖功能损害的根源在于泥沙。洞庭湖水作为人体非直接饮用的旅游娱乐用水也已受到严重威胁 (中损害 ,损失率为 2 2 % )。作为养殖、农业灌溉以及一般居住环境用水尚好 (损失率 <8% )。综合损害程度为中损害 (损失率 42 % ) ,若洞庭湖水不再用作饮用水源和游泳场 ,其综合水质是可接受的 (微损害 ,损失率降为 3% )。Based on economic loss rate of water due to pollution, the damage extent of applied functions of water in Dongting lake is assessed. Results show that water in Dongting lake has not been suitable for serving as a water source for drinking and swimming (seriously damaged, with loss rate of 70% and 58% respectively), and main pollutents come from nutrient, taking nitrogen as a restrictive factor. The root of functional damage of water in Dongting lake is sedimentation. As a sort of water used for tourism and recreation, not for drinking, water in the lake has also been affected by pollution (moderately damaged, with loss rate of 22%), but as a sort of water used for aquaculture, irrigation and residential environment, it is still in good condition (with loss rate less then 8%). Its comprehensive damage extent is moderate (with loss rate of 42%). If water in Dongting lake is no longer used for drinking and swimming, its comprehensive quality is acceptable (slightly damaged, with loss rate reduced to 3%).

关 键 词：水污染 洞庭湖 污染损失率 

分 类 号：X524[环境科学与工程—环境工程]