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前言 这里所说的“土壤侵蚀类型区”,是侵蚀类型的单元,是各种土壤侵蚀因素,在一定的条件下,综合所形成的具有共同侵蚀特性和特征的具有一定规模的区域范围。同一种土壤侵蚀类型区可以在不同的地方重复出现。 划分这种土壤侵蚀类型区的意义在于:划分出类型区后,可以深入研究其侵蚀的特征、特性、规律,更有效地防治土壤侵蚀。根据划分的土壤侵蚀类型区绘制成土壤侵蚀类型分区图,是研究并确定水土保持战略决策中所依据的重要科学资料。
Preface The term “soil erosion zone” as used herein refers to a unit of erosion type and is a range of soil erosion factors that, under certain conditions, combine to form a region of a certain scale with common erosion characteristics and characteristics. The same type of soil erosion area can be repeated in different places. The significance of dividing this type of soil erosion area lies in that after the classification of the type area, the characteristics, characteristics and laws of its erosion can be studied in depth so as to prevent and control soil erosion more effectively. Drawing a map of soil erosion type according to the divided soil erosion type area map is an important scientific material to study and determine the strategic decision of soil and water conservation.