| 大理河流域1970-2002年水保措施减洪减沙效益深化分析 |
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| 引用本文： | 冉大川,张志萍,罗全华,寇权.大理河流域1970-2002年水保措施减洪减沙效益深化分析[J].水土保持研究,2011,18(1):17-23. |
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| 作者姓名： | 冉大川 张志萍 罗全华 寇权 |
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| 作者单位： | 1. 黄河水利委员会黄河水利科学研究院,郑州,450003;中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100
2. 黄河水利委员会西峰水土保持科学试验站,甘肃,西峰,745000 |
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| 基金项目： | 黄河水利委员会“十五”重大治黄科技项目(2002SZ08); “十一五”国家科技支撑计划重点项目(2006BAB06B01-04) |
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| 摘 要： | 根据实测水文资料,采用"水文法"和"水保法"两种方法,对大理河流域1970-2002年的水沙变化和水土保持综合治理减洪减沙效益进行了比较全面的计算和分析。大理河流域20世纪70,80,90年代降雨量、径流量和输沙量呈递减趋势,其中80年代减幅最大,70,90年代减幅接近。2000-2002年年降水量和汛期降水量分别比基准期增大了8.0%和9.3%,但径流、泥沙依然递减。"水文法"计算结果表明,1970-2002年大理河流域共计减少洪水10.114 5亿m3,年均减少洪水3 065万m3,其中水土保持综合治理年均减少洪水2 370万m3,占减少洪水总量的77.2%,年均减少洪水效益25.2%;共计减沙8.448亿t,年均减沙2 560万t,其中水土保持综合治理年均减沙1 940万t,占总减沙量的75.8%,年均减沙效益37.6%。"水保法"计算结果表明,1970-2002年大理河流域水土保持措施共计减少洪水7.524亿m3,年均减少洪水2 280万m3,年均减少洪水效益24.5%;水土保持措施共计减沙6.138亿t,年均减沙1 860万t,年均减沙效益36.6%。近期流域水土保持综合治理减洪减沙效益显著,水保措施减水减沙比依时序呈下降趋势。
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| 关 键 词： | 水沙变化 减洪减沙 效益 大理河流域 |
More Comprehensive Analysis on Benefits of Flood & Sediment Reduction of Soil and Water Conservation Measures During 1970-2002 in Dali River Basin |
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| RAN Da-chuan,ZHANG Zhi-ping,LUO Quan-hua,KOU Quan.More Comprehensive Analysis on Benefits of Flood & Sediment Reduction of Soil and Water Conservation Measures During 1970-2002 in Dali River Basin[J].Research of Soil and Water Conservation,2011,18(1):17-23. |
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| Authors: | RAN Da-chuan ZHANG Zhi-ping LUO Quan-hua KOU Quan |
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| Institution: | RAN Da-chuan1,3,ZHANG Zhi-ping2,LUO Quan-hua2,KOU Quan2(1.Yellow River Institute of Hydraulic Research,Yellow River Conservancy Commission,Zhengzhou 450003,China,2.Xifeng Soil and Water Conservation Experimental Station,Qingyang,Gansu 745000,3.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China) |
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| Abstract: | According to hydrological data,using 'Hydrology method' and 'soil and water conservation method' made a more comprehensive calculation and analysis on Benefits of Flood & Sediment Reduction of Soil and Water Conservation Measures during 1970-2002 in Dali River Basin.Dali River Basin in the 20th century 70,80,90 era of rainfall,runoff and sediment discharge decreased gradually,maximum reduction was in 1980s,and 1970s,1990s close.2000-2002 precipitation and flood season precipitation compared with the base pe... |
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| Keywords: | variations of runoff and sediment flood and sediment reduction effectiveness Dali River Basin |
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