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黃土丘陵溝壑區(qū)小流域治理對侵蝕產(chǎn)沙特征的影響
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國家自然科學基金資助項目（40635027）和黃河水土保持生態(tài)工程天水藉河(二期)重點支流治理項目


Sediment Yields from the Parallel Watersheds in the Hilly-gully Regions of Loess Plateau
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    摘要:

    以黃土丘陵溝壑區(qū)第Ⅲ副區(qū)內(nèi)治理小流域橋子東溝和未治理小流域橋子西溝為對象，分析降雨,、徑流,、泥沙資料，研究水土保持綜合治理對流域侵蝕產(chǎn)沙,、水沙關系,、次降雨泥沙輸移過程的影響。結(jié)果表明：水土保持綜合治理的橋子東溝的年降雨侵蝕產(chǎn)沙顯著低于未治理的橋子西溝,。水土保持綜合治理降低了徑流平均含沙量,、輸沙率,，橋子東溝的徑流平均含沙量、輸沙率比橋子西溝分別減少40%,、80%,。水土保持綜合治理改變了次降雨徑流含沙量和輸沙率動態(tài)過程。治理初期,，橋子東溝的徑流含沙量過程都明顯高于橋子西溝,，橋子東、西溝輸沙率在不同時間段有高有低,；治理后期,，橋子東溝的徑流含沙量、輸沙率都顯著低于橋子西溝,。水土保持綜合治理影響小流域次降雨水沙關系,。

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    The Qiaozi-East watershed with management and QiaoziWest watershed without management at the third sub-region of Loess Plateau were selected as studying areas. The rainfall, runoff and sediment data were used to study the effects of soil and water conservation management on sediment yields, runoffsedimentation relations, and sediment delivery processes. The annual sediment yields of Qiaozi-East watershed were considerably lower than those of Qiaozi-West watershed. The mean sediment contents in runoff and mean sediment delivery rates from Qiaozi-East watershed were 40% and 80% less than those from Qiaozi-West watershed respectively. Soil and water conservation management altered the sediment contents and sediment delivery processes. At the early stage of the practice, the sediment contents from Qiaozi-East watershed were higher than those of Qiaozi-West watershed, but the sediment delivery rates were more or less than those of Qiaozi-West watershed. With years of management, the sediment contents and sediment delivery rates from Qiaozi-East watershed were lower than those from Qiaozi-West watershed. Soil and water conservation management altered the runoff and sediment relations.

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原翠萍,雷廷武,張滿良,范云濤,胡小軍,徐峰.黃土丘陵溝壑區(qū)小流域治理對侵蝕產(chǎn)沙特征的影響[J].農(nóng)業(yè)機械學報,2011,42(3):36-43. Yuan Cuiping, Lei Tingwu, Zhang Manliang, Fan Yuntao, Hu Xiaojun,Xu Feng. Sediment Yields from the Parallel Watersheds in the Hilly-gully Regions of Loess Plateau[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(3):36-43.

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