每年在我们祖国一望无际的辽阔土地上所形成的雪盖,是一种很巨大的、但还没有得到充分利用的富源。随着雪盖的出现,整个自然状况都起了显著的变化,白色的雪面反射了大部分的阳光,因此辐射状况起了剧烈的变化。由于雪盖的不良导热性和不良透气性,在土壤与大气之间好像形成了一重绝缘层,破坏了它们之间的热力和气体的交换。雪盖由于自己所特有的辐射和热力性质,造成了一种在性质上和没有雪盖的地面显然不同的表面,它影响到一切气象过程的特性。雪盖是气候的产物,而同时又是气候形成的强大因子。雪层预防土壤的往深冻结和土壤温度的剧烈 The snow cover formed on the vast expanse of land in our homeland every year is a huge but not yet fully utilized source of wealth. With the appearance of the snow cover, the entire natural state has taken a significant change, the white snow reflects most of the sun, so the radiation situation has undergone dramatic changes. Due to the poor thermal conductivity and poor air permeability of the snow cover, a heavy insulating layer appears between the soil and the atmosphere, undermining the exchange of heat and gases between them. Due to its own unique radiation and thermal properties, the snow cover creates a distinctly different surface in nature and in the absence of snow cover, which affects the characteristics of all meteorological processes. Snow cover is the product of the climate, but at the same time is a powerful factor in the formation of the climate. The snow layer prevents deep freezing of the soil and the intense soil temperature