Abstract:

In order to study the desertification characteristics in Horqin sand of drought and little precipitation, fragile ecological environment and severe land desertification, and to provide a theoretical basis for corresponding management, in accordance with meteorological data of Naiman Banner Region from 1961-2010, changes of temperature, precipitation, evaporation and sandstorm weather in the past 50 years were analyzed. The results showed that in the last 50 years, the temperature of Horqin sand had been rising particularly significant in winter and spring. Wide fluctuation of precipitation among years showed a decreasing tendency in general. Average annual wind speed had been fluctuating in a steady manner in between 3.2 and 3.3 m/s since the 1990s. And sandstorm weather had been basically well under control since 1995. High temperature, increased evaporation and decreased precipitation had jointly resulted in desertification of Horqin sand with a gradually lessening impact of average wind speed and sandstorm weather on the ecological environment there.