植被控制土壤侵蚀的数学模型及其应用

Mathematical Model for Controlling Soil Erosion by Vegetation and Its Application

本文通过对调查、观测资料的分析研究,从定量角度探讨了植被控制土壤侵蚀的规律。动用指数回归分析,建立了不同类型区的侵蚀模数与植被覆盖度的关系方程,在此基础上,进一步建立了植被控制土壤侵蚀的一般方程并运用有关成果对该方程进行了验证。根据一般方程推导了植被覆盖度与拦沙量的诸关系式。一般方程和各关系式具有较广泛的适用性,对定量研究植被控制土壤侵蚀的作用具有重大实际意义。

Through the analysis and study of surveyed and detrmined data and from the quantitaive point of view, this paper discusses the law of controlling soil erosion by vegetation. The formula between the erosion modulus and vegetation covering rate in various types of regions is established using the index regression analysis. On the basis of which the general formula for controlling soil erosion by vegetation is established. The formula is further resoted using some related research achievements. The related equations between vegetation coverage and the amount of retained sediments are further deduced in terms of general fomulas. The general formula and each related equation are of wide application and also of practical significance for the quantitative study of controlling erosion by vegetation.