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Urban water system theory and its model development and application

Science China Earth Sciences 2024年第3期67卷 704-724页

作者： Jun XIA Yongyong ZHANG Dunxian SHE Shiyan ZHANG Jun YANG Mingquan LV Xiang ZHANG Anqi LUO Shengjun WU Yang LIU Key Laboratory of water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of water Resources&Hydropower Engineering Sciences Wuhan UniversityWuhan 430072China Aquatic Eco Health Group Key Laboratory of Urban Environment and HealthInstitute of Urban EnvironmentFujian Key Laboratory of Watershed EcologyChinese Academy of SciencesXiamen 361021China Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714China

The urban water system theory is an extension of the basin water system science on an urban scale, providing a new systematic solution for the unbalanced human-water relationship and severe water challenges, such as waterlogging, black and odorous water, and ecological degradation caused by urbanization. Most existing studies on urban water systems have focused on individual water cycle processes linked with water supply and sewage treatment plants, but mutual feedback between the water cycle and its associated material circulation and water ecology, as well as human processes, still needs further exploration. In this paper, the concept, theory, and technical methodology of the urban water system were developed based on the water cycle and basin water system science. The Urban water System 5.0(UWS 5.0) model was developed by integrating the Time Variant Gain rainfall-runoff Model with Urban water system(TVGM_Urban) in different underlying surface conditions for analyzing the natural-social water cycle processes and their associated water environmental and ecological processes and the influence of multiscale sponge measures. Herein, five major simulation functions were realized: rainfall-runoff-nonpoint source pollutant load,water and pollutant transportations through the drainage network system, terminal regulation and purification, socioeconomic water cycle, and water system assessment and regulation. The location for the case study used in this paper was Wuhan City. The findings showed that the entire urban water system should consider the built-up area and its associated rivers and lakes as the research object and explore the integrations among the urban natural-social water cycle and river regulations inside and outside of the city as well as the effects of socioeconomic development and sponge measures on the water quantity-quality-ecology processes. The UWS 5.0 model efficiently simulated the urban rainfall-runoff process, total nitrogen(TN) and total phosphoru

关键词： Urban water system human-water relationship water issue Green development Theoretical basis Mathematical model

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流域国土空间生态修复：理论认知与规划要点

引用

生态环境与保护 2024年第2期

作者：顾恬玮彭建姜虹贺灿飞

面向国土空间生态修复对生态系统完整性的高度强调，针对完整自然地理单元——流域的国土空间生态修复将在新时期生态文明建设中发挥重要作用。按照“一个核心—两个维度—三对关系”的基本脉络深化流域国土空间生态修复的理论认知。其... 详细信息

面向国土空间生态修复对生态系统完整性的高度强调，针对完整自然地理单元——流域的国土空间生态修复将在新时期生态文明建设中发挥重要作用。按照“一个核心—两个维度—三对关系”的基本脉络深化流域国土空间生态修复的理论认知。其中，一个核心，指以“水”为流域生态保护修复的核心要素；两个维度，包括时空两个尺度，时间尺度重在长短兼顾、动态适应，空间尺度强调区域整合、区际协同；三对关系，指在“社会—生态系统”视角下协同生态功能与人类福祉的关系，统筹自然边界与行政界线的关系，协调自然恢复与人工修复的关系。结合流域国土空间生态修复的系统性认知，具体提出流域国土空间生态修复规划编制四项要点，即定量刻画人水关系、明确时空尺度衔接、开展分区分类治理、强化自然持续保障。研究结果能够为构建可持续的流域国土空间开发保护格局提供科学支撑。

关键词：流域国土空间生态修复人水关系理论逻辑空间规划 watershed territorial ecological restoration human-water relationship theoretical logic spatial planning

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