| 四湖流域螺山排区农田涝渍灾害风险评估 |
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| 引用本文： | 张伟,罗文兵,何军,李亚龙,范琳琳.四湖流域螺山排区农田涝渍灾害风险评估[J].中国农村水利水电,2021(1):125-131. |
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| 作者姓名： | 张伟 罗文兵 何军 李亚龙 范琳琳 |
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| 作者单位： | 三峡大学水利与环境学院;长江科学院农业水利研究所 |
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| 基金项目： | 国家重点研发计划(2018YFC1508302、2018YFC1508303);国家自然科学基金项目(51509010);中央级公益性科研院所基本科研业务费资助项目(CKSF2019251/NY);湖北省自然科学基金项目(2016CFB606)。 |
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| 摘 要： | 四湖流域是涝渍灾害的多发区和重灾区,为定量分析涝渍灾害的影响因素和风险分布特征,以螺山排区为对象,从涝渍灾害的致灾因子、孕灾环境、防灾能力3个方面,建立了涝渍灾害指标体系,构建了涝渍灾害风险评估模型,分析了涝渍灾害风险的时空分布特征.结果表明:在涝渍灾害影响因子中,孕灾环境所占权重最大,其次是致灾因子,而在致灾因子中汛...
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| 关 键 词： | 涝渍灾害 影响因素 指标 螺山排区 风险评估 |
Risk Assessment of Farmland Waterlogging Disaster in Luoshan Drainage Area in Four-lake Watershed |
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| ZHANG Wei,LUO Wen-bing,HE Jun,LI Ya-long,FAN Lin-lin.Risk Assessment of Farmland Waterlogging Disaster in Luoshan Drainage Area in Four-lake Watershed[J].China Rural Water and Hydropower,2021(1):125-131. |
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| Authors: | ZHANG Wei LUO Wen-bing HE Jun LI Ya-long FAN Lin-lin |
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| Institution: | (College of Hydraulic and Environmental Engineering, Three Gorges University, Yichang 443002, Hubei Province, China;Agricultural Water Conservancy Department, Changjiang River Scientific Research Institute, Wuhan 430010, Hubei Province, China) |
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| Abstract: | Four-lake watershed is the area where waterlogging disaster happens frequently and heavily.In order to quantitatively analyze the influence factors and risk distribution characteristics of waterlogging disasters,the waterlogging disaster indicator system of Luoshan drainage area is established from three aspects:the disaster-causing factor,the pregnancy disaster environment and the disaster prevention ability.Then the risk assessment model of waterlogging disaster is established.The spatial and temporal distribution characteristics of waterlogging disaster risk are analyzed.The results show that underlay surface accounts for the largest weight among all the impact factors.The second is the disaster-causing factor.The weight of comprehensive index of rainfall intensity in flood seasons is the largest among the disaster-causing factor,whose weight reache 0.1595.When the comprehensive index of rainfall intensity in flood season is 2.889,the risk degree of waterlogging disaster in drainage area(0.957)is the critical value of severe risk.When the rainfall intensity in flood season is 1.924,the risk degree of waterlogging disaster in drainage area(0.837)is calculated as the critical value of mild risk.Luoshan drainage area can only withstand 3 a flood season rainfall intensity under current conditions.The whole area is risky when 10a flood season rainfall intensity occurs. |
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| Keywords: | waterlogging disaster influencing factor index Luoshan Drainage Area risk assessment |
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