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侵蚀土壤是水土流失历史过程中的一面镜子,在一定程度上,它反映过去的流失程度,也反映目前土壤的肥力水平。我国黄土丘陵区侵蚀土壤分布之广,侵蚀程度之烈,是世界上罕见的。研究侵蚀土壤的发展规律及其与侵蚀因子间的相互关系,对合理利用土地、制定保土措施有一定的指导意义。本文以宁夏固原县侵蚀土壤调查资料为例,并应用数值分析的结果,探讨黄土丘陵区侵蚀土壤的发展规律,为防治水土流失提供科学理论依据。
Erosion of soil is a mirror in the historical process of soil erosion, to a certain extent, it reflects the extent of the loss in the past, but also reflects the current soil fertility level. The distribution of erosion soil in the loess hilly region is very high and the degree of erosion is intense, which is rare in the world. Studying the law of the development of eroded soil and the relationship between it and the eroded factors have some guiding significance for the rational use of land and the development of soil conservation measures. In this paper, the survey data of soil erosion in Guyuan County, Ningxia Hui Autonomous Region as an example, and the results of numerical analysis, to explore the development of soil erosion in the loess hilly region to provide scientific evidence for the prevention and control of soil erosion.