广阳岛理水策略与技术

Strategies and Technologies for Water Management in Guangyang Island

理水是以降雨及地貌特征为基础,通过模拟自然降雨径流过程,用基于自然的解决方案梳理水脉,管理水量、处理水质、调理生境,从而恢复自然水文循环,促进水生态系统健康,优化生命共同体各要素之间内在联系的水生态修复方法。广阳岛生态修复探索出以“雨水分析、径流模拟、滞留识别、冲突评定、径流重组、自然渗透、自然净化、自然积存、循环回用、场景呈现”共十大步骤为核心的理水方法与技术集成体系,旨在让每一滴雨水落地后,自然流淌到最适合的地方,呈现出山溪梯田、陂塘水田、小微湿地、生态湖塘等场景。

Water management is a water ecology restoration method based on rainfall and geomorphic characteristics,which can,through simulating the runoff process of natural rainfall,comb water veins,manage water quantity,treat water quality and regulate habitats by Nature-based Solutions,thus restoring the natural hydrological cycle,promoting the health of water ecosystem and optimizing the internal relationship between various elements of life community.Taking the ecological restoration of Guangyang Island as an example,this research figures out a water management method and technology integration system centered on the ten steps of“rainwater analysis,runoff simulation,detention identification,conflict assessment,runoff reorganization,natural infiltration,natural purification,natural accumulation,recycling and reuse,and scenario presentation”,which aims to make each drop of rainwater flow naturally to the most suitable place after falling to the ground,thus presenting rich and diverse scenarios such as mountain stream and terrace,impounding pond and paddy field,small and micro wetland,and ecological lake and pond.