| 沙漠与沙漠化 |
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| Quantitative Study on Influencing Factors of Desertification in Minqin County, Gansu Province |
| JIANG Zhi rong; AN Li; CHAI Cheng wu |
| 1.Research Institute of Gansu Village Development, Lanzhou 730070, China; 2.Forestry College of Gansu Agricultural University, Lanzhou 730070, China; 3.Agronomy College of Gansu Agricultural University, Lanzhou 730070, China; 4.Sand Control Institute of Gansu Province; Key Laboratory of Gansu Desertification Combating, Wuwei 733000, Gansu, China |
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Abstract 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%.
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Received: 07 August 2006
Published: 20 January 2008
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2008, Vol. 28 
