Effect of Vegetation Height and Coverage on Snow Drift on the Typical Grassland in Xilin Gol, Inner Mongolia
Relationships between snow drift and vegetation height and coverage, and the properties of Stipa grandis typical grassland were studied by in-situ investigation and measurement in Xinlin Gol League of Inner Mongolia. The results show that the surface roughness, snow depth and snow a-mount increase with relieved grassland degeneration and increased vegetation height and coverage, together with a decrease in land surface wind velocity, drifting intensity and snow amount at the upper layer of snow drifting profile. The relationships between snow drift intensity and height a-bove ground can be fitted to an exponential function. The snow depth also has an exponential relationship with vegetation height and vegetation coverage. The snow depth of the medium degraded grassland, the lower degraded grassland and the enclosure grassland are 1. 7, 3. 1 and 5. 2 times, respectively, than that of the heavily degraded grassland. The possibilities of snow drift disaster increase with the intensification of grassland degradation degree. Strengthening grassland protection and construction will play an important role in the mitigation of snow drift disaster and accumulation of snow resources.
NETL
NSTL
万方数据
维普
