论文部分内容阅读
本文利用灰色系统理论对凸—凹形西向坡建立了土壤储水量的拓扑预测模型。经检验,模型可靠性良好。通过对模型的分析得出,某一具有代表意义的土壤储水量自坡顶至坡脚依次为491.9、539、619和653.8毫米。总的来说,土壤湿度自坡顶至坡脚依次增大。经分析,水分收入系数随雨强、土壤湿度的增大而减小;对于北坡,若沿坡雨前土壤湿度相同,则坡底水分收入系数最小,而坡中最大(当i·i_mk>0.033时);北坡的湿润条件优于西坡,西坡优于南坡。
In this paper, a topological prediction model of soil water storage is established for the convex-concave west slope using the gray system theory. After testing, model reliability is good. Through the analysis of the model, it is concluded that the soil water storage capacity of a representative soil is 491.9, 539, 619 and 653.8 mm from top to bottom. In general, soil moisture increases from the top of the slope to the foot of the slope in turn. According to the analysis, the coefficient of water income decreases with the increase of rainfall intensity and soil moisture. For the north slope, if the soil moisture is the same along the slope before rainfall, the coefficient of water income at the bottom of the slope is the smallest, while the maximum in the slope (when i · i_mk> 0.033). The humid conditions on the northern slope are better than the west slope, and the west slope is better than the southern slope.