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利用2005-2010年塔克拉玛干沙漠腹地气象资料计算了极端干旱区塔克拉玛干沙漠腹地参考作物蒸散量(ET0),并与气象站蒸发皿蒸发量(Ep)进行了对比分析及影响因素的灰色关联度排序。结果表明:极端干旱区ET0最大值出现于7月,最小值则出现在1月;Ep最大值分别出现在6月,最小值出现在12月。灰色关联分析表明,在年时间尺度上与ET0关系最为紧密的气象因子是Umean,其次是Tmax,而影响Ep气象因子最为紧密的气象因子是Tmax,其次是Umean;在春、夏、秋、冬四个季节尺度上夏季对影响ET0和Ep的气象因子差异最大。ET0与Ep在春、秋、冬三个季节都成极显著关系,而在夏季呈显著线性关系,因此在不同时间尺度上二者可以进行互相替换。
The reference crop evapotranspiration (ET0) in the hinterland of the Taklamakan desert in extreme arid region was calculated using the meteorological data in the hinterland of the Taklimakan Desert in 2005-2010. The comparative ETO and the ranking of the influencing factors were also analyzed. The results showed that the maximum value of ET0 in extreme arid region appeared in July and the minimum value appeared in January; the maximum value of Ep appeared in June and the minimum value appeared in December. The gray correlation analysis shows that the meteorological factor that has the closest relationship with ET0 in the annual time scale is Umean followed by Tmax and the meteorological factor with the closest Ep meteorological factor is Tmax followed by Umean. In spring, summer, autumn and winter The difference of meteorological factors affecting ET0 and Ep in summer on the four seasonal scales was greatest. ET0 and Ep were extremely significant in spring, autumn and winter, but significantly linear in summer. Therefore, ET0 and Ep could replace each other on different timescales.