晋西黄土残塬沟壑区塬坡坡面土壤水分特征分析

Slope Soil Water Characteristics Analysis in Loess Gully Area in Western Shanxi Province

通过对黄土残塬区坡面土壤水分规律研究,阐明塬坡坡面的土壤水分特征。采用烘干称重法测定土壤含水量。研究结果表明:整地方式对坡面土壤含水率有较大影响;坡度与坡向对坡面土壤含水率亦有较大影响。相同下垫面条件下,小坡度阴坡土壤含水率要远大于大坡度阳坡土壤含水率;整地、坡度、坡向三者对坡面土壤含水率的影响,坡向影响最大,其次为坡度、整地。

On the basis of analyzing slope soil water change in loess gully area, the paper deals with the slope soil water characteristics. The results showed that soil water is the function of soil preparation, soil water content of natural grassland under condition of soil preparation is higher than that of no preparation. Slope gradient and Slope aspect have huge impact on soil water content. Under the same condition, the soil water content of small gradient slope is far more bigger than that of big gradient slope. As for soil preparation, slope gradient and slop aspect, the slop aspect has the greatest impact on soil water content, the next is slope gradient and soil preparation correspondingly.