城区水域保护划界研究——以南京市秦淮区为例

基于城区河道蓝线规划的局限性和水域保护的现实需求,利用层次分析法确定5个影响水域保护的自然属性和社会属性因子权重,借助GIS空间叠加分析,构建水域保护评价体系,较为准确、客观地判读了秦淮区水域保护现状;结合秦淮区水域蓝线规划,划定了更为合理、切实的水域保护边界,克服了蓝线规划的局限性,增强区域针对性与可操作性,因地制宜地降低城区各影响因子对水域健康和生态稳定的干扰,对提升城区水域的保护与管理工作具有较大意义。

Study of delimitation of urban water area protection: a case study of Qinhuai District in Nanjing City

Based on the limitations of the blue line planning of rivers and the actual demand of water protection in urban areas, the study constructs an evaluation system of the water protection works with the GIS spatial overlay analysis technology and the weight coefficients of five natural attributes and social attribute factors are determined by the AHP. The study gives an accurate and objective interpretation of the current situation of water area protection in Qinhuai District and delimitates more reasonable and practical water area protection boundaries based on blue line planning. The study overcomes the limitations of blue line planning, enhances regional pertinence and maneuverability and reduces the disturbance of various influencing factors in the urban areas to water quality and ecological stability, which has a great significance to enhance the protection and management of urban water areas.