Climate Change and Soil Moisture Response Characteristics of Desert Steppe

摘要

Analyzing the change of soil moisture of grassland caused by climate change has prevalent meaning in restoring ecological environment of grassland. In this study, precipitation, air temperature and evaporation capacity were taken as the main meteorological factors, climate trends and soil moisture response features of desert steppe in Inner Mongolia were analyzed. The results showed: the tendency of climate change in Inner Mongolia desert steppe was according with global Change in recent 40 years, which presented as drought, warming trends; precipitation and evaporation were the main factors in affecting soil moisture, climatic warming creates more evaporation; the difference between annual evaporation and rainfall was the intuitional factor for analysis the impact of climate change on soil water, which could better reflect soil water supply and consumption levels under the natural condition.