基于韧性理念的城市河流健康评价--以郑州市金水河为例  

Urban River Health Assessment Based on Concept of Resilience--Taking Jinshui River in Zhengzhou City as a Case Study

作　　者：张宇帆 朱莹莹 陈奕洁 田国行[1] Zhang Yufan;Zhu Yingying;Chen Yijie;Tian Guohang(College of Landscape Architecture and Art,He’nan Agricultural University,Zhengzhou,He’nan 450002,China)

机构地区：[1]河南农业大学风景园林与艺术学院,河南郑州450002

出　　处：《水土保持通报》2022年第6期238-246,257,共10页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金青年项目“基于空间博弈的中原城市绿地空间演变机制与结构调控研究”(51808198);河南省城乡绿地资源调控与景观生态设计学科创新引智基地项目(GXJD006);河南省高等学校重点科研项目(18A220003)。

摘　　要：[目的]在韧性理念指导下对郑州市金水河健康水平进行评价,为金水河修复与科学管理提供理论依据。[方法]以郑州市金水河为例基于压力—状态—响应模型(简称PSR),构建城市河流健康评价指标体系,采用组合赋权法和物元可拓模型对河流健康水平与发展趋势进行评价与预测。构建城市化—河流健康响应模型,分析城市化对城市河流健康的影响。[结果]研究区的河流健康水平呈现明显的空间差异性,河段1,3,6,7,8,11,14的健康等级为健康、亚病态、亚病态、病态、亚健康、亚病态、健康(河段编号从河口向上游依次变大),其中位于新城区的河段健康水平较老城区高,河段1,3,8,14健康水平有进一步恶化的趋势,而河段6,7,11的健康水平有向好发展的趋势;城市化水平(城市流域不透水面积比,ISC)对于河流健康水平产生显著影响的阈值在50%左右。[结论]研究区各河段健康水平在周边城市环境的影响下存在明显的空间差异,城市河流的健康水平与城市化水平密切相关,在对城市河流保护与修复时应加强城市规划的科学性以促进水城共融。[Objective]The health level of the Jinshui River in Zhengzhou City was evaluated by using the concept of resilience in order to provide a theory basis for the restoration and scientific management of the Jinshui River.[Methods]Based on a pressure-state-response model(PSR),an urban river health evaluation index system was constructed for the Jinshui River in Zhengzhou City.The combined weighting method and a matter-element extension model were used to evaluate river health and to forecast development trends.An urbanization-river health response model was constructed to analyze the impact of urbanization on urban river health.[Results]The river health levels in the study area showed obvious spatial variability,and the health levels of reaches 1,3,6,7,8,11,and 14 were healthy,sub-illness,sub-illness,illness,sub-healthy,sub-illness,and healthy(the reach number increased from the estuary to the upstream positions).The health levels of the river reaches that were located in the new urban area were higher than those located in the old urban area.The health level of reaches 1,3,8,and 14 had a tendency for further deterioration,while the health levels of reaches 6,7,and 11 had a tendency for further improvement.The threshold for the level of urbanization(impervious area ratio in urban watersheds,ISC)that would have a significant effect on river health was around 50%.[Conclusion]There were obvious spatial differences in the health level of each river section in the study area due to the influence of the surrounding urban environment.The health of urban rivers was closely related to the level of urbanization.Therefore,urban planning research should be strengthened to protect and restore urban rivers,thereby promoting water-city integration.

关 键 词：韧性理念 城市河流健康评价 PSR 物元可拓模型 城市化响应 金水河 郑州市 

分 类 号：S732[农业科学—林学] TV213.4[水利工程—水文学及水资源]