黄河中游多沙粗沙区侵蚀环境若干要素分析

Analysis on Several Factors Influencing the Erosion Environment in Coarse and Sediment Concentrated Regions in Yellow River's Middle Stream

通过黄委会对黄河中游多沙粗沙区范围的界定和有关学者对该区黄土区、风沙区和基岩区三种产沙区类型的划分,分析了影响该区土壤侵蚀的主要环境因素,如降水和风力、下垫面组成、地形和植被等因素,同时就该区内人为因素对土壤侵蚀的影响进行了分析,并提出了综合环境要素影响流域侵蚀的概念。

According to the definition of the coarse and Sediment concentrated regions in the Middle Yellow River by Huanghe River Commission and three sub-regions of loess, wind- sand, and bedrock divided by some scientists, the main environmental factors influencing in the soil and water erosion in this region, such as precipitation, wind power, underlying condition, topography, vegetation coverage, and as well as anthropogenic activities, were analyzed in this paper. Furthermore, the concept of comprehensive environmental factors influencing in the soil and water erosion was provided in the paper.