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Serious soilerosion is one ofthe majorissues threatening sustainable land use in semiarid areas,especially in the LoessPlateau ofChina.Understanding the effectsofland use on soiland water loss is important for sustainable land use strategy. Two sub-catchments: catchment A (CA) and catchment B (CB) with distinct land uses were selected to measure soil moisture,runoff and soil nutrientlossin Da Nangou catchmentofthe LoessPlateau ofChina.The effectsofland use patterns on runoffand nutrientlosseswere analyzed based on soilmoisture pattern by kriging and soilnutrients using multiple regression model.The resultsindicated thatthere were significantdifferencesin runoff yield and soil nutrient losses between the two sub-catchments. W ith similar land uses, the CA produced an average sediment yield of 49 kg ha-1 and 22.27 kg ha-1 during two storm events. M eanwhile,there was almostno runoffin the CB with dissimilarland uses during the same events. Bufferzonesshould be established to re-absorb runoffand to trap sedimentsin catchmentwith similar land use structure such as the CA.M oreover,land use managementstrategy aiming to increase the infiltration threshold ofhydrologicalresponse unitscould decrease the frequency ofrunoffoccurrence on aslopeand catchmentscale.
Serious soilerosion is one of the major challenge of threatening the sustainable land use in semiarid areas, especially in the Loess Plateau of China. Understanding the effects of land use on soiland water loss is important for sustainable land use strategy. Two sub-catchments: catchment A (CA) and catchment B CB) with distinct land uses were selected to measure soil moisture, runoff and soil nutrient lossin Da Nangou catchment of the Loess Plateau of China. The effects of land use patterns on runoff and nutrientlosseswere based on soilmoisture pattern by kriging and soil nutrients using multiple regression model. Results results that wereindicated significantdifferencesin runoff Yield and soil nutrient losses between the two sub-catchments. W ith similar land uses, the CA produced an average sediment yield of 49 kg ha-1 and 22.27 kg ha-1 during two storm events. Méanwhile, there was almostno runoffin the CB with dissimilarland uses during the same events. Bufferzonesshould be established to re-absorb ru noffand to trap sedimentsin catchment with similar land use structure such as the CA.M oreover, land use managementstrategy aiming to increase the infiltration threshold ofhydrologicalresponse unitscould decrease the frequency ofrunoffoccurrence on aslopeand catchmentscale.