河北师范大学学报—

以罗布泊地区1957—2017年日气温数据为基础，通过线性倾向估计法、移动平均法、距平与累积距平法、独立样本t检验法及IDW空间插值法，分析了近60a罗布泊地区气温的时空变化及突变性特征.结果表明：罗布泊地区气温呈上升趋势，且平均线性增长率为0.27℃/10a；年平均气温年际空间变化较显著，高值区集中分布于吐鲁番盆地区域，低值区集中分布于阿尔金山地区；季平均气温年际时空特征变化差异性强，冬季升温现象最显著，呈冬暖夏凉的变化趋势.进入21世纪后，气温处于高位震荡期，年平均气温及季平均气温时空特征变化显著且差异性增大，整体上呈增温趋势；罗布泊地区年平均气温累积距平曲线呈先下降后上升趋势，且突变年份集中在1987，1989，1996以及1997年.

Abstract：

:Based on the daily air temperature data of Lop Nor area from 1957 to 2017,the temporal and spatial variation and abrupt change characteristics of air temperature in Lop Nor area are analyzed by using linear regression,moving average method,anomaly and cumulative anomaly method,and inverse-distance weighting(IDW) spatial interpolation method.Results show that air temperature in Lop Nor area present upward trend,and the average linear growth rate is 0.27 ℃/10 a.The inter-annual spatial variation of average annual temperature is more significant,and high-value area is concentrated in Turpan Basin,while low-value area is concentrated in Altun Mountains area.The interannual temporal and spatial characteristics variation of seasonal average temperature is great,among which temperature increase in winter is the most significant and shows the trend of warm in winter and cool in summer.After entering the 21st century,air temperature is in the period of high volatility,the temporal and spatial characteristics of annual average and seasonal average temperature show significant change and their differences increase,and the overall trend is increasing.The cumulative anomaly curve of annual average temperature in Lop Nor area show the trend of first decrease then increase,and the abrupt change years are concentrated in 1987,1989,1996 and 1997.

关键词

关键词： 气温变化；时空变化；气温突变；罗布泊

Key words： air temperature change ; temporal and spatial change ; air temperature abrupt change ; Lop Nor

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