| 巴丹吉林沙漠气温和降水特征及空间分层异质性 |
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| 作者姓名： | 宁文晓 刘旭阳 王振亭 |
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| 作者单位： | 1. 中国科学院西北生态环境资源研究院, 兰州 730000;2. 中国科学院大学, 北京 100049 |
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| 基金项目： | 国家自然科学基金（41571006）资助 |
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| 摘 要： | 利用巴丹吉林沙漠周边地区4个气象站1960—2018年和沙漠腹地1个自动气象站2016—2018年的气温和降水量资料，采用趋势分析、突变检验、交叉小波、小波相干以及地理探测器方法，对巴丹吉林沙漠近60 a的气候变化进行研究。结果表明：巴丹吉林沙漠周边地区年均温以0.34 ℃/10 a的速率显著上升，年降水量增加趋势并不明显；年降水量发生多次突变，而年均温仅在20世纪90年代初发生一次突变；沙漠腹地和周边的月均温变化趋势具有高度相似性，而降水量的月变化趋势具有较大差异；综合各站点来看，气温和降水量在多时间尺度上主要呈现非线性关系；沙漠地区的降水量具有空间分异性，气温几乎不具有空间分异性。
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| 关 键 词： | 巴丹吉林沙漠 气温 降水 气候变化 空间分异性 |
| 收稿时间： | 2019-05-27 |
| 修稿时间： | 2019-09-05 |
Temperature and precipitation characteristics and spatial stratified heterogeneity in Badain Jaran Desert |
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| Authors: | NING Wenxiao LIU Xuyang WANG Zhenting |
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| Institution: | 1. Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this study, the basic characteristics of climate change of Badain Jaran Desert within nearly 60 a is analyzed using linear trend analysis, Mann-Kendall test, cross wavelet, wavelet coherence， and geo-detector methods, based on the temperature and precipitation data from 2016-2018 by an automatic weather station at the center and data from 1960-2018 by 4 weather stations at the margin of the desert. The results show that the annual average temperature of the Badain Jaran Desert increased at a rate of 0.34 ℃/10 a, but increasing trend of annual precipitation was not obvious. Annual precipitation abruptly changed for several times, while annual average temperature showed abrupt change only once in 1990. The mean monthly temperature in the center of the desert was highly similar to that of the marginal areas, while the monthly change trend of precipitation was quite different. The overall relationship between precipitation and temperature was nonlinear at multiple time scales. Precipitation was characterized by spatially stratified heterogeneity, while temperature did not show such character. |
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| Keywords: | Badain Jaran Desert temperature precipitation climate change spatial stratified heterogeneity |
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