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摘要: 基于实际监测数据,从水资源量和水环境质量2个方面估算了2013—2016年辽河保护区水资源供给服务及价值。结果显示,2013—2016年,辽河保护区水资源量供给服务变化较大,水资源量、超标污染当量和水资源供给服务价值变化趋势基本一致,均呈先降低后升高的趋势。2013—2016年,辽河保护区各监测断面超标污染当量均为正值,即在年尺度上各监测断面水环境质量均达到GB 3838—2002《地表水环境质量标准》Ⅳ类水质的目标考核要求。从各监测断面来看,福德店断面水资源量和超标污染当量最低,水资源供给服务价值也最低,马虎山断面最高。2013—2016年,辽河保护区各月水资源供给服务价值和单位水资源量供给服务价值变化较大,且二者的变化过程有较大差异。以福德店和六间房为例的月评估结果显示,2013—2016年2个监测断面的逐月超标污染当量和水资源量变化过程基本一致,但多年平均月水资源供给服务价值和单位水资源量供给服务价值有所不同。Abstract: Based on the actual monitoring data, the water supply service and its value of Liaohe Conservation Area were analyzed from two aspects in terms of water quantity and water quality from 2013 to 2016. The results showed that the water supply service of Liaohe Conservation Area witnessed a series of fluctuation. The water quantity, excessive pollution equivalent and water supply service value showed a similar trend of decrease followed by increase. During 2013 to 2016, the excessive pollution equivalent of each monitoring section was positive for each year, which meant that the water environment quality of each monitoring section had reached the target assessment requirements of Class Ⅳ of Environmental Quality Standards for Surface Water (GB 3838-2002). As for individual water monitoring sections, the Fudedian section had the lowest values of water quantity, excessive pollution equivalent and water supply service value, while those of the Mahushan section were the highest. The period of 2013 to 2016 witnessed a dramatically changing trend in the value of monthly water supply service and water supply service per unit water resource quantity in Liaohe Conservation Area; and the two change progresses were of significant differences. On the basis of monthly assessment analysis result of the Fudedian and Liujianfang section, a similar trend was found in the monthly excessive pollution equivalent and water quantity changes during the period of 2013 to 2016, but many differences were presented in the annual average value of monthly water supply service and water supply service of per unit water resource.
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Key words:
- Liaohe Conservation Area /
- water supply /
- water quality /
- pollution equivalent
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