Abstract: The responses of soil temperature and humidity to change of vegetation coverage were analyzed,based on the observed data of the soil temperature and humidity under different vegetation coverage in two sites during the growing period of alpine Kobresia tibetica meadow.The results showed that the variation of vegetation coverage correspond with the seasonal change,soil temperature enhanced and soil humidity declined with the increase of vegetation coverage.From morning(8:00) to afternoon(19:00),the soil temperature increased with the increasing of vegetation coverage,while it decreased with the increasing of vegetation coverage at the noon(14:00).Whenever it was in the morning and afternoon or at noon,the soil humidity would increase with the development of vegetation coverage.

Key words: Kobresia tibetica meadow, Kobresia tibetica meadow, Vegetation coverage, Soil temperature, Soil humidity