Spatiotemporal variation of temperature, precipitation and wind trends in a desertification prone region of China from 1960 to 2013
Spatiotemporal variation of temperature, precipitation and wind trends in a desertification prone region of China from 1960 to 2013
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1960—2013年中国荒漠化地区气温、降水和风趋势时空变化
DOI：
10.1002/joc.4635
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Dong Linshui
中科院分区：
文献类型：
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作者：
Shi Zhongjie;Shan Nan;Xu Lihong;Yang Xiaohui;Gao Jixi;Guo Hao;Zhang Xiao;Song Aiyun;Dong Linshui
利用Mann-Kendall检验和Theil-Sen斜率估计器，对1960年至2013年中国荒漠化易发区179个气象站的气温、降水和风速的时空分布进行了分析。结果表明，DPR 年平均气温以 0.33∘ C（10 年）− 1 的速度上升。在过去 54 年的大多数月份和季节中，Tmin 的增长速度普遍高于 Tmax；这导致昼夜温差下降。朝鲜民主主义人民共和国西部地区大多数气象站降水量增加，东部地区降水量减少，但这些趋势在所有时间尺度上都没有统计显着性。大多数气象站在大部分时间尺度上记录到风速显着下降。调查结果显示，朝鲜西部地区气候变暖、湿润，东部地区气候变暖、干燥。更好地了解历史气候如何变化，可以为土地荒漠化/退化、水资源、生态项目和农业生产等减缓政策的调整提供科学支持。这些政策将有助于朝鲜防治荒漠化进程、维护生态安全、促进可持续发展。
Spatial and temporal distributions of temperature, precipitation and wind speed from 1960 to 2013 at 179 meteorological stations situated in the desertification prone region (DPR) of China are analysed using the Mann–Kendall test and the Theil–Sen’s slope estimator on monthly, seasonal and annual timescales. The results indicate that annual mean temperature has increased at a rate of 0.33∘ C (10 year)− 1 over the DPR. Tmin generally increased at a higher rate than Tmax in the majority of the months and seasons over the past 54 years; this has resulted in a decrease in the diurnal temperature range. Precipitation increased for the majority of the meteorological stations in the western area of the DPR, and decreased in the eastern area, but few of these trends are statistically significant on all timescales. The majority of meteorological stations recorded a significant decrease in wind speed at the majority of timescales. Results from this investigation show that the climate is becoming warmer and wetter in the western area of the DPR, and warmer and drier in eastern area of the DPR. A greater understanding of how the historical climate has been changing enables scientific support for the adaption of mitigation policies for land desertification/degradation, water resources, ecological projects and agricultural production. These policies will aid in combating the desertification processes, maintaining ecological security and promoting sustainable development in the DPR.