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三、晋西黄土高原降雨侵蚀力的时空分布规律 (一)侵蚀性降雨基本雨量标准的确定 每一场天然降雨都具有一定的侵蚀能力。由于土壤具有一定的抗蚀性,因而微量的降雨虽也具有侵蚀力,但不会发生土壤流失。我们所研究的是能够产生土壤流失的降雨,即侵蚀性降雨。为了求得晋西黄土高原降雨侵蚀力的定量数值,必须首先确定出这一地区侵蚀性降雨的基本雨量标准,以便收集资料,开展研究工作。
Third, the Shanxi Jinxi Loess Plateau rainfall erosivity of spatial and temporal distribution of (a) the basic criteria of erosive rainfall to determine the standard rainfall Each natural rainfall has a certain degree of erosion. Due to the soil has a certain degree of corrosion resistance, so a trace of rainfall is also erosive, but does not occur soil erosion. What we are studying is rainfall that can cause soil erosion, ie, eroding rainfall. In order to determine the quantitative value of rainfall erosivity on the Loess Plateau in western Shanxi Province, we must first determine the basic rainfall standard for erosive rainfall in this area in order to collect data and carry out research work.