基于DPSIR耦合模型的重庆市水资源承载研究

Study on Water Resource Carrying Capacity of Chongqing City by DPSIR Coupling Model

针对重庆市水资源管理基本特征,考虑生态环境良性发展,选取26个相关指标构建驱动力–压力–状态–影响–响应(DPSIR)概念模型,结合主成分分析法和综合权重法开展区域水资源承载力状态评价研究。结果表明:基于DPSIR模型构建的水资源承载力评价模型具有可行性,评价模型中选取的指标在评价过程中具有全面性和代表性;在耦合评价模型的权重计算过程中,基于主成分分析法和综合权重法得到的最终评价结果具有相似的变化趋势,整体结论具有一致性。模型最终评价结果显示,近15a来重庆市水资源承载能力持续优化,逐步增强;2017年得分达最大值,表明研究区内水资源系统采取的保护措施实施效果良好,实现了水资源系统与经济、社会、生态共同发展。

Based on the basic characteristics of water resources management, a Driving forces-Pressure-State-Impact- Response (DPSIR) model with 26 related indicators is constructed by considering ecological environment benign development, which couple with Principal Component Analysis (PCA) and Synthetic Weighting Method (SWM) to study the state of regional water resources carrying capacity evaluation for Chongqing city. The results show that the evaluation model of water resource carrying capacity based on DPSIR model is feasible, and the indexes selected are comprehensive and representative in the evaluation process. In the process of weight calculation of the coupled evaluation model, the evaluation results based on PCA and SWM have a similar trend of change, and the overall conclusion is consistent. The results show that the carrying capacity of water resources in Chongqing has been continuously optimized and gradually enhanced in the last 15 years, and the score reached the maximum in 2017, indicating that the protection measures have realized the common development of the water resource with the economy, society and ecology.