长江经济带水环境治理政策分区与跨界协同管控研究

Water environment management is a hotspot of all circles of society. The research on water environment governance policy is oriented to the current high quality development requirements of China, with profound theoretical significance and the practical value of promoting regional sustainable development.This study aims to establisha water environmental governance policy assessment framework with the goal of coupled water environment governance policy goal performance and implementation efficiency. Taking the Yangtze River Economic Belt as an example, based on the analysis of the evolution process of water environment governance policies in different provinces and cities in the region, the spatial heterogeneity of water environmental governance policy benefits is described, and the reasons for policy failure. Combining the three elements of ecological environment, economy society, and policy benefits, the regional clustering method and matrix classification method are used to divide the three-dimensional partitioning of water environment management policies. The cost-effective model is established to analyze the cost-benefit of water environment coordination control in Cross-border areas. The multi-dimensional game process of collaborative control of different entities evaluates the relevant policy benefits under different scenarios, and proposes measures and recommendations to optimize existing water environmental governance policies and achieve sound ecological development. Research is conducive to cross-disciplinary research, and promote policy science development, ecological environment improvement and regional sustainable development.

水环境治理是社会各界关注的热点，水环境治理政策相关研究面向我国当前高质量发展的要求，具有深刻的理论意义和推动区域可持续发展的现实价值。本研究在分析水环境治理政策的目标绩效、执行效益基础上，建立水环境治理政策评估框架。以长江经济带为案例，剖析区域内不同省市的水环境治理政策演变过程，评估现行的环境治理政策效益，刻画政策效益的空间异质性并诊断政策失灵与否的原因。结合生态环境、经济社会、政策效益三要素，以地域聚类法、矩阵分类法为支撑，划分水环境治理政策三维分区；构建费效模型分析跨界地区水环境协同管控的成本-收益，模拟不同主体协同管控的多维博弈过程，评估不同情景下相关政策效益，进而提出优化现有水环境治理政策、实现生态环境良性发展的措施和建议。研究面对我国高质量发展的需求，有助于从科学视角推动长江经济带政策科学制定、生态环境改善和区域可持续发展。

本研究以长江经济带为例，首先搜集了长江经济带水环境治理、水环境保护相关政策进行比对，总体上长江经济带中上游的水资源保护目标较下游高，而下游对水环境治理、污染物削减排放的目标均较中上游高。其次，针对现有的环境治理保护政策进行了量表型问卷调查，建立结构模型方程进行计算，政策执行向度、刚度、能力其对政策执行效度影响的路径系数分别为0.337、0.359、0.324，均呈正向显著影响。第三，建立双重差分模型，对河长制政策效益进行评估，政策前后DID双重差分值为4.044且呈现出显著性，说明政策起到了决定性作用。最后，以太浦河为例，建立了非对称性鹰鸽博弈模型，对跨界地区水源冲突、成本、合作收益进行了分析，当博弈双方额外收益之和超过系统收益时，在经过较长时间的演化后，冲突策略将会淘汰，系统最终将演化为合作状态。研究面对我国高质量发展的需求，有助于从科学视角推动长江经济带政策科学制定、生态环境改善和区域可持续发展.