海绵城市理念下流域协同治理策略思考与探索

近些年来,随着流域治理目标从局部的工程达标向整体的水质达标的转变,工程思维下治理模式面临巨大的挑战,无法可持续达标,究其原因在于忽略了工程性措施与非工程性措施之间的协同关系,如河道空间利用与保护的关系、污染物治理与利用的关系、工程建设与良性运维的关系、治理措施与机制体制的关系、治理需求与技术能力的关系。海绵城市试点建设为优化工程性措施与非工程性措施关系提供了宝贵的实践场地,也取得了较好效果。鉴于此,总结了海绵城市理念下流域治理的经验与教训,提出海绵城市理念下流域协同治理的六大策略,包括河道生态缓冲空间的划定与保护,流域节水、雨水利用、污染物资源化协同推进,治理工程提质增效和良性运维并重,跨行政区协调机制与体制完善,基于监测与模型的项目绩效动态评估机制建立,流域信息共享与技术支撑能力提升。

Exploration and Thought on the Strategy of Basin Coordinated Management under the Concept of Sponge City

In recent years,with the transfer of the river basin governance objectives from local to overall,engineering governance is facing great challenges and the goal is difficult to sustain.The reason lies in the neglect of the collaborative relationship between engineering measures and non-engineering measures,including the relationship between river space utilization and protection,the relationship between pollutant treatment and utilization,the relationship between construction and maintenance,the relationship between governance measures and mechanism system,the relationship between governance needs and technical capabilities.The pilot construction of sponge city provides a valuable practice site to optimize the relationship between engineering measures and non-engineering measures,and obtains prospective results.In view of this,this paper attempts to summarize the experience and lessons of watershed governance under the concept of sponge city,and puts forward six strategies,including:①protection of river ecological buffer space;②collaborative promotion of water-saving,rainwater utilization and pollutant recycling;③improvement of quality and efficiency of engineering construction and maintenance;④improvement of the coordination mechanism and system across administrative regions;⑤establishment of project performance dynamic evaluation mechanism based on monitoring and modeling;⑥improvement of basin information sharing mechanism and technical support capacity.