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毛乌素沙地是中国"绿水青山"的实践样本。经过数十年的治理,该地区自然条件及生态环境已经发生了巨大改变。利用毛乌素沙地及周边地区地面气象站1960—2018年气温数据,分析和探讨了该地区气温时间序列及空间分布特征。结果表明,毛乌素沙地地区全年气温变化范围在-10～25℃之间,全年平均气温高于同时期中国地区平均水平,近年来气温上升速率明显高于中国地区整体以及全球平均气温的上升速率,气温时间序列表明毛乌素沙地近年来有"变暖"的趋势,但是这一趋势正在出现转折。气温空间分布呈现出明显的由北向南逐渐递增的特征,受纬度以及海拔高度影响较大。利用快速傅里叶变换提取了毛乌素沙地多年的气温的频谱特征,发现气温存在约为363.63 d的明显周期。
Abstract：Mu Us dune field is a practical sample of China's“green water and green mountains”. After decades of governance,the natural conditions and ecological environment of the region have undergone tremendous changes. The temperature data in 1960—2018 obtained from ground weather stations in Mu Us dune field and surrounding areas are used to analyze and discuss the time series and spatial distribution characteristics of temperature in this area. The results show that the annual temperature in Mu Us dune field varies from-10 to 25 ℃,and the annual average temperature is higher than the average level in China during the same period. In recent years,the temperature rise rate in this area is significantly higher than that of the overall and global average temperature in China. The temperature time series indicate that Mu Us dune field has a warming trend in recent years,but this trend is turning. The spatial distribution of temperature presents an obvious characteristic of gradually increasing from north to south,which is greatly affected by latitude and altitude. Fast Fourier transform is used to extract the spectral characteristics of the air temperature in Mu Us dune field for many years,and it is found that the temperature has an obvious period of about 363.63 days.
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基本信息:
DOI：10.14188/j.2095-6045.2020591
中图分类号:P423
引用信息:
[1]朱海,黄观文.毛乌素沙地地区1960—2018年气温时空特征分析[J].测绘地理信息,2021,46(S1):276-281.DOI:10.14188/j.2095-6045.2020591.
基金信息:
国家自然科学基金(41731066,41774025); 国家重点研发计划(2018YFC1505102); 陕西省杰出青年基金(2019JC-20); 二代导航重大专项课题“分析中心建设与运行维护”(GFZX0301040308); 中央高校科研业务费专项(CHD300102268305,CHD300102268305)