毛乌素沙区1961-2016年降水特征

doi:10.7522/j.issn.1000-694X.2019.00021

摘要/Abstract

摘要： 基于毛乌素沙区10个气象站1961-2016年观测资料，应用Mann-Kendall方法和t检验法对各气象站年降水量进行了突变检验，借助小波分析讨论了各气象站年降水量的周期特征，根据降水量等值线划分结果对整个研究区分区分析了年、季、月和日尺度上的降水变化特征，并在两个时段上分析了季节性降水的差异。结果表明：毛乌素沙区年降水量空间特征差异明显，东部亚区呈上升趋势，中西部亚区呈下降趋势，但变化趋势不显著且无突变发生；降水年内分配不均，干湿季分明，降水集中在5-9月，夏秋季降水占全年降水比重大，季、月和日尺度降水量存在梯度递减变化；年降水量的年际变化过程存在多重时间尺度的自相似结构；近26年的冬春季降水增加显著，但降水波动幅度小于前30年。

关键词: 毛乌素沙区, 突变检验, 小波分析, 多时间尺度

Abstract: Based on the precipitation data of 10 meteorological stations in the Mu Us Sandy Area from 1961 to 2016, the mutation detections of annual precipitation were tested by the Mann-Kendall method and t test, the periodic variation were discussed by the Morlet wavelet analysis method. Precipitation change characteristics on four time scales of year, season, month and day were analyzed according to precipitation isolines zone, and the differences of seasonal precipitation were analyzed in two time periods. Results showed that the spatial characteristics of annual precipitation in the Mu Us Sandy Area were obviously different, the eastern sub-region showed an upward trend while the central and western sub-regions showed a downward trend, however, the change trend was not significant and there were no mutations. Distribution of precipitation within a year is uneven, and the dry and wet seasons are distinct. The precipitation is mainly concentrated during the period of May-and September, the summer and autumn precipitation accounts for a dominant proportion of the annual precipitation. Moreover, the precipitation on four time scales of year, season, month and day have gradient decreasing change from east to west. A self-similar structure with multiple time scales existed in the process of inter-annual precipitation change. In the recent 26 years, the precipitation in winter and spring increased markedly, but the fluctuation range of precipitation was less than that in previous 30 years.

Key words: Mu Us Sandy Area, mutation detection, wavelet analysis, multi-time scales

中图分类号:

P423

张雪琴, 刘树林, 冯坤, 郭紫晨, 康文平, 陈翔, 支莹. 毛乌素沙区1961-2016年降水特征[J]. 中国沙漠, 2019, 39(6): 141-150.

Zhang Xueqin, Liu Shulin, Feng Kun, Guo Zichen, Kang Wenping, Chen Xiang, Zhi Ying. Characteristics of Precipitation in the Mu US Sandy Area during 1961-2016[J]. Journal of Desert Research, 2019, 39(6): 141-150.

参考文献

[1] 沈永平,王国亚.IPCC第一工作组第五次评估报告对全球气候变化认知的最新科学要点[J].冰川冻土,2013,35(5):1068-1076.
[2] 李正华.工业革命以来大气CO₂浓度不断增加的树轮稳定碳同位素证据[J].科学通报,1994,39(23):2172-2174.
[3] 董光荣,陈惠忠,王贵勇,等.150 ka以来中国北方沙漠、沙地演化和气候变化[J].中国科学:化学,1995,25(12):1303-1312.
[4] 白美兰,郝润全.内蒙古东部近54年气候变化对生态环境演变的影响[J].气象,2006,32(6):31-36.
[5] 王静茹,马龙,刘廷玺.1951-2012年科尔沁沙地气温、降水变化特征[J].干旱区研究,2016,33(1):49-58.
[6] 赵哈林,张铜会,崔建垣,等.近40 a我国北方农牧交错区气候变化及其与土地沙漠化的关系——以科尔沁沙地为例[J].中国沙漠,2000,20(增刊1):2-7.
[7] 施雅风,沈永平,胡汝骥.西北气候由暖干向暖湿转型的信号、影响和前景初步探讨[J].冰川冻土,2002,24(3):219-226.
[8] 安莉娟.近44 a毛乌素沙地西缘气候特征及其未来可能变化趋势[J].沙漠与绿洲气象,2017,1(4):25-31.
[9] 胡永宁,王林和,张国盛,等.毛乌素沙地1969-2009年主要气候因子时间序列小波分析[J].中国沙漠,2013,33(2):390-395.
[10] 王立新,刘华民,杨劼,等.毛乌素沙地气候变化及其对植被覆盖的影响[J].自然资源学报,2010,25(12):2030-2039.
[11] 徐小玲,延军平.近30年毛乌素沙区的气候与厄尔尼诺/拉尼娜事件的相关分析[J].干旱区研究,2003,20(2):117-122.
[12] 张慧慧,赵景波.厄尔尼诺/拉尼娜事件对青海湖周边地区气候的影响[J].水土保持通报,2013,33(1):146-151.
[13] Zhang X S.Principles and optimal models for development of maowusu sandy grassland[J].Acta Phytoecologica Sinica,1994,18(1):1-16.
[14] 郝成元.毛乌素地区沙漠化驱动机制研究[D].济南:山东师范大学,2003.
[15] Qiang L,Yang Z,Cui B.Spatial and temporal variability of annual precipitation during 1961-2006 in Yellow River Basin,China[J].Journal of Hydrology,2008,361(3):330-338.
[16] Zhu L,Meng J.Study on rainfall variations in the middle part of Inner Mongolia,China during the past 43 years[J].Environmental Earth Sciences,2010,60(8):1661-1671.
[17] 徐建华.计量地理学[M].北京:高等教育出版社,2014.
[18] Dickey D A,Fuller W A.Distribution of the estimators for autoregressive time series with a unit root[J].Journal of the American Statistical Association,1979,74(366):427-431.
[19] 刘巍,陈昭.计量经济学软件:EVIEWS操作简明教程[Z].2013.
[20] 魏凤英.现代气候统计诊断与预测技术[M].北京:气候出版社,2007.
[21] 李贤彬,丁晶,李后强.子波分析及其在水文水资源中的潜在应用[J].四川联合大学学报(工程科学版),1997(4):49-52.
[22] 张洁林.毛乌素沙地气候变化对参考作物蒸散量的影响[D].北京:中国地质大学(北京),2016.
[23] 刘宇峰,杜忠潮,原志华,等.近60 a毛乌素沙地东缘主要气候要素的多时间尺度变化特征[J].干旱区资源与环境,2016,30(9):121-127.
[24] 陈仁升,康尔泗,张济世.小波变换在河西地区水文和气候周期变化分析中的应用[J].地球科学进展,2001,16(3):339-345.
[25] 郭坚,王涛,韩邦帅,等.近30 a来毛乌素沙地及其周边地区沙漠化动态变化过程研究[J].中国沙漠,2008,28(6):1017-1021.
[26] 王英,曹明奎,陶波,等.全球气候变化背景下中国降水量空间格局的变化特征[J].地理研究,2006,25(6):1031-1040.
[27] 范锦龙,张艳,李贵才.北方农牧交错带中部区域气候变化特征[J].气候变化研究进展,2007,3(2):91-94.
[28] 史培军,严平,袁艺.中国北方风沙活动的驱动力分析[J].第四纪研究,2001,21(1):41-47.
[29] 刘树林,王涛,郭坚.浑善达克沙地春季风沙活动特征观测研究[J].中国沙漠,2006,26(3):356-361.
[30] 王训明,李吉均,董光荣,等.近50 a来中国北方沙区风沙气候演变与沙漠化响应[J].科学通报,2007,52(24):2882-2888.
[31] 王训明.随风而来的沙漠化[J].科学通报,2013,58(14):1267-1276.