Abstract
In this paper, firstly, five grazing methods were measured in two dimensions of time and space to complete the quantification of variables. It is found that there is a chain propagation effect between grazing, vegetation biomass and soil moisture through mathematical derivation, and the single effect between grazing and vegetation biomass is described by Woodward's equation, and the effect model of grazing mode on vegetation biomass is obtained by inverse solution of differential equation; the effect model between vegetation biomass and soil moisture is reached through soil-vegetation-atmosphere equation. The relationship between vegetation biomass and soil moisture is reached through the soil-vegetation equilibrium equation, and the model of the effect of grazing on soil moisture is fitted in the software based on the aforementioned model of the effect of grazing on vegetation biomass through the chain effect. The mathematical model of the effects of different grazing strategies on soil moisture and vegetation biomass was thus obtained.
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