基于Alos的遥感技术在江苏省太湖流域一级保护区水环境综合整治中的应用

Application of Remote Sensing Technology Based on ALOS for Integrated Control of Water Environment in the First-Grade Protection Zone of Taihu Lake

江苏省太湖流域一级保护区综合整治是治理太湖的重点工作,直接关系太湖湖体水环境质量。本文通过遥感技术对江苏省太湖流域一级保护区土地利用类型进行了解析,将一级保护区土地分解为15种利用类型,结果表明:一级保护区建设用地总面积为235.1km2,土地开发强度为17.2%。高强度的土地开发是造成太湖及主要入湖河流污染的首要原因,故整治太湖流域一级保护区首要任务是严格控制建设用地规模,降低污染物排放负荷。

The integrated control of water environment in the first-grade protection zone is the key work of Taihu Lake environment improvement, which is directly related to the water quality in Taihu basin. Based on data from remote sensing, the lands are classified into 15 patterns of utilization. The result shows that the total area of the land for construction is 235.1 km2 and the land development intensity is 17.2%. The high intensity of land development is the main cause to pollute the Taihu Lake and its main inflow rivers. So the priority to renovate the first-grade protection zone of Taihu Lake is to control the scale of land construction strictly and reduce pollutants diseharged.