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利用塔里木盆地周边及腹地13个气象站1961～2007年的观测资料,选择联合国粮农组织给出的风蚀气候因子指数计算公式,计算了塔里木盆地风蚀气候因子指数值,以此阐述了风蚀气候侵蚀力的基本特征。结果表明,多年平均风蚀气候因子指数C值的分布范围为6.3～39.6,整个盆地的平均值为17.5;从空间分布来看,C值由盆地西部向东部呈增大趋势,最大值出现在盆地东南缘的若羌;风蚀气候因子指数具有显著的季节变化,春季最大,夏季次之,秋季再次之,冬季最小;近50a来,风蚀气候因子指数总体上呈减小趋势,说明风蚀气候侵蚀力在降低;风蚀气候侵蚀力主要受风速的作用,与降水的关系不显著。
Based on the observation data of 13 weather stations in the periphery and hinterland of Tarim Basin from 1961 to 2007, the formula of wind-induced climatic factor index given by FAO was selected and the index of wind-induced climate factor in Tarim Basin was calculated. The basic characteristics. The results showed that the distributions of C values of multi-year mean wind-blown climate factor index ranged from 6.3 to 39.6, and the average value of the whole basin was 17.5. From the spatial distribution, the C value increased from the west to the east of the basin and the maximum appeared in the basin In the past 50 years, the index of climatic factors of wind erosion generally showed a decreasing trend, indicating that the wind erosion climate index had a significant seasonal change, the highest in spring, the second in summer, the second in winter and the third in winter. The wind erosive climate erosivity is mainly affected by the wind speed, and the relationship with precipitation is not significant.