塔克拉玛干沙漠中部部分地区风沙环境特征

通过对塔克拉玛干沙漠中部部分地区的气象资料分析、野外实地风沙观测和理论计算，对其风沙环境特征作出了一些初步分析。结果表明沙漠边缘地区年起沙风时间数在2.70×10

Characteristics of Blown Sand Environment in Middle Taklimakan Desert

With the adverse circumstances, the characteristics of blown sand environment in the hinterland of the Taklimakan Desert up to now can not be acknowledged on the basis of the quantitative analysis. This paper, through the analysis on meteorological elements, the observations in field and the calculations, analyzed the characteristics of the blown sand environment in this area, and founded the equations of the sand transport. The results show that on the edge of the desert, the effective wind was 2.70×104 min annually, and the effective wind formed with broadly modal regimes. The total sand transport was 5 500 kg*m-1*a-1. While in the hinterland of the desert, there formed effective winds that with unimodal. The effective wind annually arrived at 4.61×104 min, the total sand transport was 8 700 kg*m-1*a-1, and the maximum was 11 000 kg*m-1(1997-06 to 1998-05). Furthermore, the morphodynamics of dunes were not unified completely to the modes that Tomas expressed in 1991. And also there are divergences with the declarations Coral.S.Breed claimed on Taklimakan Desert.