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- W2367777625 abstract "Antecedent moisture content is one of the important factors affecting runoff,as well as sediment and nutrient losses from slope-land. In this work,the effects of the antecedent moisture contents of the soil on the loss of Nitrate-N and phosphorus from the slope-land were investigated through indoor artificial rainfall experiments. The results show that NO-3-N leaching plays a key role in the NO-3-N loss of the soil,and the NO-3-N in the soil transports into surface runoff when the antecedent soil moisture exceeds 20%. The ratio of dissolved phosphorus (DP) loss to sediment extractable phosphorus (SEP) loss decreases for the clay loam soil as the antecedent moisture increases,but increases exponentially for sandy soil. The amount of SEP loss was significantly positively correlated with sediment yield,and the relationships among the losses of NO-3-N,SEP,DP and sediment losses and antecedent moisture contents may be described by a quadratic equation. In addition,the optimal antecedent moisture contents corresponding to the least losses of the nutrients were estimated based on the quadratic equation,and the optimal antecedent water content was 10.21%～11.37% for clay loam soil and 8.97%～13.39% for sandy soil." @default.
- W2367777625 created "2016-06-24" @default.
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- W2367777625 date "2008-01-01" @default.
- W2367777625 modified "2023-09-25" @default.
- W2367777625 title "Effect of antecedent soil moisture on Nitrate-N and Phosphorus loss from loess slope-land and determination of optimal moisture values" @default.
- W2367777625 hasPublicationYear "2008" @default.
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