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一、划分水土流失程度与强度的意义 所谓水土流失程度是指历史上和近代的自然、人为诸因子(侵蚀因子)对地表土壤及其母岩(侵蚀对象)侵蚀剥蚀作用的结果和所让成的现状。诚然这种现状又是不稳定的,是处在变化之中的。我们调查所得到的某一现状——程度级别,仅是水土流失发展中的某一时刻内各因子强度所处状况的集中外在表现,以说明调查地区水土流失轻重与否,用轻度、中度、强度、剧烈表示。
I. The Significance of Dividing the Degree and Intensity of Soil and Water Loss The so-called degree of soil and water loss refers to the result of erosion and denudation caused by natural and man-made factors (erosion factor) on the surface soil and its parent rock (erosion target) by historical and modern times, The status quo. It is true that the status quo is unstable and is undergoing changes. One of the current status quo-degree levels obtained by our survey is only a concentrated external manifestation of the intensity of each factor at a certain moment in the development of soil and water loss to illustrate whether soil and water loss in the surveyed area is serious or not, with mild, Moderate, intense, dramatic.