基于GIS栅格技术湖泊水环境容量核算实践
Practice of Accounting the Water Environmental Capacity of Lakes Based on GIS Grid Technology
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摘要: 从环境容量的基本概念出发,以武汉市汤湖为例,利用GIS栅格技术,对湖泊水环境容量进行核算分析。通过降雨前后环境容量总量及空间分布的变化对比,结合湖泊沿岸区域土地利用现状,辨析湖泊面源入流来源及污染特点,对环境容量及水体污染带进行简单而精细化的预判,为水体污染防治方案的制定提供足够的数据支撑,以此探讨栅格分析技术在湖泊水环境容量方面的实践与应用。Abstract: In this paper, started from the basic concept of environmental capacity, Tang Lake of Wuhan City was taken as an example for accounting and analysis of water environmental capacity of the lake by use of GIS grid technology. By comparison of the variation of the total amount and spatial distribution of the environmental capacity before and after precipitation, with regard to the current status of land use of the regions along the lake, inflow sources and pollution features of the lake non-point source pollution were differentiated and analyzed and then environmental capacity and water pollution belt were anticipated in a simple but refined way, providing sufficient data to support the development of water pollution control plans for exploration of the practice and application of grid analysis technology in lake water environmental capacity accounting.
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