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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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Upgrading to urban water system 3.0 through sponge city construction

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Frontiers of Environmental Science & Engineering 2017年第4期11卷 3-10页

作者： Nanqi Ren Qian Wang Qiuru Wang Hong Huang Xiuheng Wang State Key Laboratory of urban water Resource and Environment Harbin Institute of Technology Harbin 150090 China Ministry of Environmental Protection of the People's Republic of China Beijing 100035 China

Facing the pressure of excessive water consumption, high pollution load and rainstorm waterlogging,linear and centralized urban water system, system 2.0, as well as traditional governance measures gradually exposed characters of water-sensitivity, vulnerability and unsustainability, subsequently resulting in a full-blown crisis of water shortage, water pollution and waterlogging. To systematically relieve such crisis, we established urban water system 3.0, in which decentralized sewerage systems, sponge infrastructures and ecological rivers play critical roles. Through unconventional water resource recycling, whole process control of pollutions and ecological restoration, system 3.0 with integrated management measures, is expected to fit for multiple purposes which involve environmental,ecological, economic and social benefits. With advantages of flexibility, resilience and sustainability, water system 3.0 will show an increasingly powerful vitality in the near future.

关键词： water crisis urban water system Sponge city Decentralized system Multi-purpose

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Evaluation of the Spatial Quality of the Greenway on the Tonghui River in Beijing

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Journal of Landscape Research 2024年第1期16卷 27-30页

作者： ZHENG Keying SUN Shuai North China University of Technology Beijing 100144China

This study organized the current status of tangible cultural heritage along the Tonghui *** spaces along the Tonghui River were classified according to the farmland,suburban areas,urban residential areas,and urban center *** analysis of the current situation was conducted through Baidu Street View images,with a focus on evaluating the spatial environment around the tangible cultural *** factors affecting the reuse of cultural heritage were analyzed,such as poor appearance of buildings and low accessibility of transportation along the Tonghui River.

关键词： urban water system Beijing-Hangzhou Grand Canal Cultural heritage protection

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Challenges and countermeasures of urban water systems against climate change:a perspective from China

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Frontiers of Environmental Science & Engineering 2023年第12期17卷 189-195页

作者： Yisheng Shao Yijian Xu China Academy of urban Planning&Design No.5 Chegongzhuang West RoadBeijing 100044China

urban water systems are facing various challenges against climate change,impacting cities’security and their sustainable ***,there are three major challenges:submersion risk of coastal cities as glaciers melt and sea level rises,more and severe urban flooding caused by extreme weather like intensified storm surge and heavy precipitation,and regional water resource patterns challenged by alteration of spatial distribution of *** this,two strategies including proactive adaptation and positive mitigation were proposed in this article to realize the reconstruction and optimization of urban water systems,to enhance their resilience,and eventually increase their adaptability and coping ability to climate *** proactive adaptation strategy consists of 1)construction of sponge cities to accommodate the increased regular rainfall and to balance the alterations of spatial redistribution of precipitation;2)reconstruction of excess stormwater discharge and detention system to increase capability for extreme precipitation events based on flood risk assessment under future climate change;3)deployment of forward-looking,ecological,and integrated measures to improve coastal protection capability against inundation risks caused by climate change and sea level *** positive mitigation strategy is to employ the systematic concept in planning and design and to adopt advanced applicable energy-saving technologies,processes,and management practices,aiming at reduction in flux of urban water systems,reinforcement in energy conservation and carbon reduction in both water supply systems and wastewater treatment systems,and thus a reduction of greenhouse gas emission from urban water systems.

关键词： Climate change urban water system Resilience Adaptation Mitigation

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Design of the Functional Improvement and Transformation of Public Space in Old Communities Guided by Rivers:A Case Study of the Tiaodeng River Basin of Yongchuan

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景观研究:英文版 2023年第3期15卷 17-26页

作者： DONG Lili WANG Yiquan YU Qiao YU Wenwen Chongqing Jiaotong University Chongqing 400074China Chongqing Aitelansi Landscape Architecture Planning Co. Ltd.Chongqing 400074China

urban water system has a certain orientation for the formation and morphological evolution and development of urban space,and old residential areas are often built along the vein of the water system,which is one of the main media to continue the historical context of the city and create the urban regional landscape in the context of urban *** old residential area of the Tiaodeng River basin in the old city of Yongchuan is taken as the research *** the background of urban double cultivation,community transformation is combined with urban waterfront space *** the influencing factors such as water pollution,monotonous function,and lack of style,the existing problems of the site are analyzed and ***,six major strategies are put forward to achieve the quality and function improvement of the old residential area in the Tiaodeng River basin:creating a water town type of landscape style,river course governance,traffic optimization,shaping cultural interface,updating business formats,and improving supporting facilities.

关键词： urban water system Tiaodeng River urban renewal Functional enhancement

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