Quantitative Study on Influencing Factors of Desertification in Minqin County, Gansu Province
民勤县荒漠化影响因素定量分析

Based on survey to influencing factors of desertification in Minqin county of Gansu province, the following eleven indexes are determined, they are rural population, cultivated area, grain output, forestation area, amount of electromechanical well, wheat yield, rural power consumption, groundwater mineralization degree, inflow from upper river, sand-dust storm days, and annual precipitation. The inner structure of each factor and its effect on desertification process are analyzed by method of factor analysis. The result showed that the contribution of anthropogenic factor to desertification is 82 %, and that of the natural is 18 %.