Study On Ecological Restoration Zoning Planning Of The West Mao Li Lake

The west MaoLi lake is the direct drinking water place of BaoHedi,DuKou,TangHua,BaiYi and LiJiapu.The safety of drinking water is closely related to thousands of people in the surrounding area.In recent years,the west MaoLi lake agricultural non-point source pollution has became increasingly serious.Through the calculation and prediction of the west MaoLi lake regional non-point source pollution shows that the largest source of agricultural pollution is more than 1/3.Through the west MaoLi lake environmental capacity judgment,it shows that the total phosphorus out of limits and the Ammonia nitrogen is close to the maximum index of the lake index.Zoning planning for ecological restoration is the prerequisite for ecological management.Identification of areas with high risk of non-point source pollution through watershed ecological sensitivity analysis.The results of the study shows that,the zoning planning is divided the basin into 4 level 1 partition including Water source protection area 48.03km2,Basin control area 220.8km2,Lakeside buffer zone 58.19km2,the lake protection zone 53.67km2.The level 2 are based on the level 1 basin control areas,including the key management area 113.2km2,the strict control area 62.8km2,the natural recovery area 20.3km2.The level 3 partition is divided into 39 regions based on the level 1 and level 2 patitions and it reflecting the characteristics of natural ecology and the influence of human activities.It provides a precondition for further detailed monitoring of pollution data.It also makes the future protection work have emphasis.And be able to adapt to local conditions and make a definite target.Ensure the coordinated development of ecological environment and socioeconomic sustainability...