坡耕地土壤侵蚀研究进展

论述了坡耕地土壤侵蚀的机理、研究方法及防治措施 ,分析了坡耕地泥沙、径流、养分流失的特征及影响因素 ,认为坡耕地是水土流失的主要来源 ,在整个生态环境建设中具有重要地位。目前国内外研究多偏重于坡面水土流失特征的描述和控制坡面水土流失、提高土壤肥力的效果等 ,研究方法以定性和统计分析为主 ,在坡耕地水土流失机理、养分流失所造成的面源污染、坡面流失定量预测模型以及控制措施与坡面的相互作用等方面还需作更深入的研究。

Recent Development of Sloping Field Erosion

The progresses of sloping field erosion, study methods and of preventive measures are summarized. The mechanism and affect factors of sediment, runoff and nutrient loss on the slopeland surface are analyzed respectively. The sloping fields were the main source of sediment, runoff and nutrient loss. Most of the research works focused on the prevention soil and water loss on the slopeland surface and improvement of soil fertility. Most of the study methods were qualitative and statistics analysis. However, studies on the mechanism of soil and water loss and nutrient loss, the model of quantitative analysis were scarce yet, the further studies should pay more attention to the processes of runoff and sediment yield, so as to study the mechanism of slope erosion and build the process-based model of water erosion prediction.