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Wang X, Cheng Y. Urban Lake Health Assessment Based on the Synergistic Perspective of Water Environment and Social Service Functions. GLOBAL CHALLENGES (HOBOKEN, NJ) 2024; 8:2400144. [PMID: 39398525 PMCID: PMC11469770 DOI: 10.1002/gch2.202400144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 07/27/2024] [Indexed: 10/15/2024]
Abstract
Urban lakes serve as vital ecological and recreational anchors within built environments, essential for enhancing urban resilience. Evaluating lake health predominantly focuses on water quality, assessing indicators such as nutrient levels, toxicity, pH balance, and water clarity to monitor changes. This study proposes a comprehensive evaluation framework that systematically describes specific spatiotemporal manifestations and periodic exogenous regulation characteristics across five dimensions: physical structure, water quality, shoreline dynamics, external regulation, and social service. Furthermore, it introduces an urban lake health assessment model based on synergistic development to evaluate the integrated development and interaction between water environments and social services. This model is applied across urban lakes in various developmental stages in China. Key findings include: 1) Urban development often impacts lake health disparately, with varying degrees of synergy observed between water environments and social services across different urban lakes. However, shifts in urban ideologies and improvements in governance, along with protective policies and project implementations, have contributed to improving water quality to some extent. 2) Engineering interventions do not consistently correspond with improvements in water quality, and governance measures sometimes yield mixed outcomes, underscoring the necessity for systematic solutions to lake health. Restoring hydrological processes emerges as crucial for enhancing sustainability.
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Affiliation(s)
- Xueyuan Wang
- Southeast UniversityXuanwu DistrictNanjing210000China
| | - Yuning Cheng
- Southeast UniversityXuanwu DistrictNanjing210000China
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Luo K, Hu X, He Q, Wu Z, Cheng H, Hu Z, Mazumder A. Impacts of rapid urbanization on the water quality and macroinvertebrate communities of streams: A case study in Liangjiang New Area, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 621:1601-1614. [PMID: 29054671 DOI: 10.1016/j.scitotenv.2017.10.068] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/28/2017] [Accepted: 10/08/2017] [Indexed: 05/14/2023]
Abstract
Rapid urbanization in China has dramatically deteriorated the water quality of streams and threatening aquatic ecosystem health. This study aims to 1) assess the impacts of urbanization on water quality and macroinvertebrate composition and 2) address the question of how urbanization affects macroinvertebrate distribution patterns. Environmental variables over multispatial scales and macroinvertebrate community data were collected on April (dry season) and September (wet season) of 2014 and 2015 at 19 sampling sites, of which nine had a high urbanization level (HUL), six had moderate urbanization level (MUL) and four had low urbanization level (LUL), in the Liangjiang New Area. The results of this study showed that macroinvertebrate assemblages significantly varied across the three urbanization levels. The sensitive species (e.g., EPT taxa) were mainly centralized at LUL sites, whereas tolerant species, such as Tubificidae (17.3%), Chironomidae (12.1%), and Physidae (4.61%), reached highest relative abundance at LUL sites. The values of family biotic index (FBI) and biological monitoring working party (BMWP) indicated the deterioration of water quality along urbanization gradient. Seasonal and inter - annual changes in macroinvertebrate communities were not observed. The results of variation partitioning analyses (CCAs) showed that habitat scale variables explained the major variation in macroinvertebrate community composition. Specifically, the increased nutrient concentrations favored tolerant species, whereas high water flow and substrate coarseness benefitted community taxa richness, diversity and EPT richness. Considering the interactions between scale-related processes, the results of this study suggested that urbanization resulted in less diverse and more tolerant stream macroinvertebrate assemblages mainly via increased nutrient concentrations and reduced substrate coarseness.
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Affiliation(s)
- Kun Luo
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, 400045, China; Department of Biology, University of Victoria, PO Box 3020, STN CSC, Victoria, BC V8W 3N5, Canada
| | - Xuebin Hu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, 400045, China.
| | - Qiang He
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, 400045, China
| | - Zhengsong Wu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, 400045, China
| | - Hao Cheng
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, 400045, China
| | - Zhenlong Hu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, 400045, China
| | - Asit Mazumder
- Department of Biology, University of Victoria, PO Box 3020, STN CSC, Victoria, BC V8W 3N5, Canada
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