畜禽养殖污染空间分布特征研究—以十堰市竹溪县为例

Research on the Spatial Distribution Characteristics of Livestock and Poultry Pollution—A Case Study of Zhuxi County in Shiyan City

摘要: 目前，畜禽养殖产生的农业面源污染日渐凸显，笔者采用地理信息系统(Arcgis)对南水北调中线工程丹江口水库的水源涵养区竹溪县的畜禽养殖现状和污染的空间分布特征进行了分析研究，以期对竹溪县畜禽养殖发展及污染防控提供一定的参考指示作用。结果显示：竹溪县畜禽养殖及污染现状基本呈现由北至南，海拔从低至高，养殖密度及污染负荷不断下降的趋势；存在空间分布不合理，污染防治措施不完善的问题。污染负荷最高的水坪镇综合贡献率达到了11.26%，排放强度最高的城关镇水平甚至超过了全县平均水平的2倍；剩余养殖潜力发展潜力最大的乡镇的是新州镇。

Abstract: Nowadays, agricultural non-point source pollution from livestock and poultry has become more prominent. Using the geographic information system (Arcgis), authors analyzed the poultry breeding situation and spatial distribution characteristics of pollution in Zhuxi County, which is a water conservation area in the Danjiangkou reservoir of the Central Line Project of South-to-North Water Diversion, in order to provide a reference indicator for livestock breeding development and pollution prevention in Zhuxi County. The results show that: the present situation of livestock and pollution in Zhuxi is from north to south, and from low to high altitude, presenting a decreasing trend of breeding density and pollution load; there is unreasonable spatial distribution, and pol-lution prevention and control measures are not perfect. Shuiping Town contributes the highest pollution load rate reaching 11.26%, the emission intensity of Chengguan Town even exceeds twice the level of the county average, and Xinzhou Town owns the greatest development potential among the residual farming potential towns.