Impact factors of soil wind erosion in the center of Taklimakan Desert
Qing HE, XingHua YANG, Ali Mamtimin, ShiHao TANG
1 Istitute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China; 2 Desert Atmosphere and Environment Observation Experiment of Taklimakan Station, Tazhong 841000, China; 3 National Satellite Meteorological Center, China Meteorological Administration, Beijing100081, China
Impact factors of soil wind erosion in the center of Taklimakan Desert
Qing HE, XingHua YANG, Ali Mamtimin, ShiHao TANG
1 Istitute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China; 2 Desert Atmosphere and Environment Observation Experiment of Taklimakan Station, Tazhong 841000, China; 3 National Satellite Meteorological Center, China Meteorological Administration, Beijing100081, China
摘要 The development and progress of soil wind erosion are influenced by the factors of climate, terrain, soil and vegetation, etc. This paper, taking Tazhong region, a town in the centre of the Taklimakan Desert, as an example and using comparative and quantitative methods, discussed the effects of climate, surface roughness (including vegetation cover) and surface soil properties on soil wind erosion. The results showed that the climate factor index C of annual wind erosion is 28.3, while the maximum of C is 13.9 in summer and it is only 0.7 in winter. The value of C has a very good exponential relationship with the wind speed. In Tazhong region, the surface roughness height is relatively small with a mean of 6.32 × 10-5 m, which is in favor of soil wind erosion. The wind erosion is further enhanced by its sandy soil types, soil particle size, lacking of vegetation and low soil moisture content. The present situation of soil wind erosion is the result of concurrent effects of climate, vegetation and surface soil properties.
Abstract: The development and progress of soil wind erosion are influenced by the factors of climate, terrain, soil and vegetation, etc. This paper, taking Tazhong region, a town in the centre of the Taklimakan Desert, as an example and using comparative and quantitative methods, discussed the effects of climate, surface roughness (including vegetation cover) and surface soil properties on soil wind erosion. The results showed that the climate factor index C of annual wind erosion is 28.3, while the maximum of C is 13.9 in summer and it is only 0.7 in winter. The value of C has a very good exponential relationship with the wind speed. In Tazhong region, the surface roughness height is relatively small with a mean of 6.32 × 10-5 m, which is in favor of soil wind erosion. The wind erosion is further enhanced by its sandy soil types, soil particle size, lacking of vegetation and low soil moisture content. The present situation of soil wind erosion is the result of concurrent effects of climate, vegetation and surface soil properties.
基金资助: National key Technology R & D Program (2008BAC40B05-01); National Natural Science Foundation of China (40775019); Xinjiang Uygur Autonomous Region Science and Technology Key Project (200833119)
通讯作者:
Qing HE
E-mail: qinghe@idm.cn
引用本文:
Qing HE, XingHua YANG, Ali Mamtimin, ShiHao TANG. Impact factors of soil wind erosion in the center of Taklimakan Desert[J]. 干旱区科学, 10.3724/SP.J.1227.2011.00009.
Qing HE, XingHua YANG, Ali Mamtimin, ShiHao TANG. Impact factors of soil wind erosion in the center of Taklimakan Desert. Journal of Arid Land, 2011, 3(1): 9-14.
