| 城市化生态水文效应 |
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| 引用本文： | 孙艳伟,王文川,魏晓妹,POMEROY C A,王富强.城市化生态水文效应[J].水科学进展,2012,23(4):569-574. |
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| 作者姓名： | 孙艳伟 王文川 魏晓妹 POMEROY C A 王富强 |
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| 作者单位： | 1.华北水利水电学院水利学院, 河南郑州 450011; |
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| 基金项目： | 国家自然科学基金资助项目(51009065);美国Water Environment Research Foundation资助项目(03-SW-3a)~~ |
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| 摘 要： | 研究城市化的生态水文效应对于指导河流的保护与生态修复实践具有重要意义。基于河流径流情势在维持河道生态系统完整性方面的重要性,在分析现有生态水文指标体系的特征及可操作性的基础上,建立了以径流历时曲线、洪峰流量频率超出曲线和T0.5(区域径流超出天然状态下重现期为0.5年的降水所产生的洪峰流量的时间占区域有径流总时间的比例)为代表的生态水文指标体系。利用SWMM(Storm Water Management Model)来模拟不同城市化程度下的降雨径流过程,并利用所建立的生态水文指标体系模拟其生态水文效应。结果表明:城市化程度越高,其时段流量幅度及历时越大,洪峰流量及发生的频率越大,T0.5越小。城市化通过改变径流的大小、历时及频率,改变了水域生态系统完整性与多样性,进而对河道生态系统产生了负面影响。
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| 关 键 词： | 城市化 径流情势 生态水文 径流历时曲线 洪峰流量 |
| 收稿时间： | 2011-10-31 |
Eco-hydrological impacts of urbanization |
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| SUN Yan-wei
,
WANG Wen-chuan
,
WEI Xiao-mei
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POMEROY C A
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WANG Fu-qiang.Eco-hydrological impacts of urbanization[J].Advances in Water Science,2012,23(4):569-574. |
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| Authors: | SUN Yan-wei WANG Wen-chuan WEI Xiao-mei POMEROY C A WANG Fu-qiang |
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| Affiliation: | 1.Department of Hydraulic Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, China;2.College of Water Resources and Architecture Engineering, North-West Agriculture and Forestry Technology University, Yangling 712100, China;3.Department of Civil Engineering, University of Utah, Salt Lake City 84112, USA |
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| Abstract: | Eco-hydrological impacts caused by urbanization are important issues in protecting and restoring river ecosystem.Given the importance of flow regime in maintaining river ecosystem integrality,an eco-hydrological indicator system including flow duration curve,peak flow frequency exceedance curve and T0.5(The fraction of the simulation period that the peak flow rate exceeds the peak flow of the predevelopment 0.5-year storm) were developed by analyzing characteristics of current indicators and their feasibility in data-lacking area.Urbanization development degrees and their eco-hydrological impacts were simulated in a hydrological model SWMM(Storm Water Management Model).Results demonstrated that the higher imperviousness,the greater instantaneous flow,peak flow,frequency,duration and smaller T0.5.indicating a negative effect of urbanization on the river in ecology. |
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| Keywords: | urbanization flow regime eco-hydrology flow duration curve peak flow |
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