基于SPEI指数的新疆天山草地近55 a干旱特征

doi:10.13866/j.azr.2019.03.18

摘要/Abstract

摘要： 标准化降水蒸散指数(SPEI)通过标准化潜在蒸散与降水的差值,表征一个地区干湿状况偏离常年的程度,是分析干旱演变趋势的新的理想指标,目前已经广泛应用于干旱评估、水资源管理等领域。利用SPEI和1961—2015年新疆天山山区8个代表站点的月降水量及月平均气温资料,对天山山区55 a以来气温和降水的变化特征、不同时间尺度的干旱变化特征、草地生长季干旱特征及变化趋势进行了分析,结果表明:近55 a,天山山区气温呈现显著的上升趋势;降水量总体呈略微上升的趋势,但年际变化较大,变化趋势不显著;天山山区月、季、半年尺度以及年尺度的干旱事件分别为42个、25个、16个和7个;天山山区草地生长季发生轻度、中度和重度干旱的频率分别为37.5%、7.1%和1.8%;近55 a,天山山区草地生长季降水量有所增加,但由于气温升高带来的蒸散作用加强,气候仍呈变干的趋势。近55 a来,天山山区草地生长季气候存在变干的倾向,且年际间的干旱程度变化剧烈,对草地的年际间生长状况差异存在较大的影响。

关键词: 干旱, SPEI指数, 草地生长季, 气候变化, 天山山区, 新疆

Abstract: Calculated by standardizing the difference between potential evapotranspiration and precipitation,the standardized precipitation evapotranspiration index (SPEI) shows the drought degree deviation from normal conditions.As an ideal indicator for analyzing the drought evolution trend,SPEI is widely used in drought assessment,water resources management and other fields.The characteristics of the temperature,precipitation,temporal distribution and variation of the temperature,precipitation,slight,moderate and severe drought frequencies and their trends in growing season of grasslands were analyzed using the SPEI method based on the monthly mean air temperature and monthly precipitation at 8 meteorological stations over the Tianshan Mountains in Xinjiang during the period from 1961 to 2015.Results showed that the annual temperature in the study area was in a significant increase trend in recent 55 years.The precipitation was generally in a slight increase trend with a larger inter-annual variability,but the change trend was not significant.The numbers of drought events at monthly,seasonal,semi-annual and annual scales in the Tianshan Mountains were 42,25,16 and 7 respectively.The frequencies of slight,moderate and severe drought in growing season of grasslands were 37.5%,7.1% and 1.8% respectively.In recent 55 years,the climate over the grasslands in the Tianshan Mountains in growing season of grasslands became dry,and the annual degree of drought changed dramatically,which affected significantly the growth of the grasslands.

Key words: drought, SPEI, grasslands growing season, climate change, Tianshan Mountains, Xinjiang

郭燕云, 胡琦, 傅玮东, 王森, 刘艳. 基于SPEI指数的新疆天山草地近55 a干旱特征[J]. 干旱区研究, 2019, 36(3): 670-676.

GUO Yan-yun, HU Qi, FU Wei-dong, WANG Sen, LIU Yan. Drought Trend over the Grasslands in the Tianshan Mountains, Xinjiang in Recent 55 Years Based on SPEI[J]. Arid Zone Research, 2019, 36(3): 670-676.

参考文献

[1] 谢金南,李栋梁,董安祥,等.甘肃省干旱气候变化及其对西部大开发的影响[J].气候与环境研究,2002,7(3):359-369.
[Xie Jinnan,Li Dongliang,Dong Anxiang,et al.Effects of Gansu climate change on developing of the Western China[J].Climatic and Environmental Research,2002,7(3):359-369.]
[2] 张强,韩兰英,张立阳,等.论气候变暖背景下干旱和干旱灾害风险特征与管理策略[J].地球科学进展,2014,29(1):80-91.
[Zhang Qiang,Han Lanying,Zhang Liyang,et al.Analysis on the character and management strategy of drought disaster and risk under the climatic warming[J].Advances in Earth Science,2014,29(1):80-91.]
[3] 张强,张良,崔显成,等.干旱监测与评价技术的发展及其科学挑战[J].地球科学进展,2011,26(7):763-778.
[Zhang Qiang,Zhang Liang,Cui Xiancheng,et al.Progresses and challenges in drought assessment and monitoring[J].Advances in Earth Science,2011,26(7):763-778.]
[4] 黄晚华,杨晓光,曲辉辉,等.基于作物水分亏缺指数的春玉米季节性干旱时空特征分析[J].农业工程学报,2009,25(8):28-34.
[Huang Wanhua,Yang Xiaoguang,Qu Huihui,et al.Analysis of spatio-temporal characteristic on seasonal drought of spring maize based on crop water deficit index[J].Transactions of the CSAE,2009,25(8):28-34.]
[5] 曹永强,张兰霞,张岳军,等.基于CI指数的辽宁省气象干旱特征分析[J].资源科学,2012,34(2):265-272.
[Cao Yongqiang,Zhang Lanxia,Zhang Yuejun,et al.Analysis of drought characteristics of Liaoning Province based on the CI index[J].Resources Science,2012,34(2):265-272.]
[6] 张婧,梁树柏,许晓光,等.基于CI指数的河北省近50年干旱时空分布特征[J].资源科学,2012,34(6):1089-1094.
[Zhang Jing,Liang Shubo,Xu Xiaoguang,et al.Temporal and spatial distribution characteristics of droughts for recent 50 years in Hebei Province based on meteorological drought composite index[J].Resources Science,2012,34(6):1089-1094.]
[7] McKee T B,Doesken N J,Kleist J.The Relationship of Drought Frequency and Duration to Time Scales[M].Anaheim,California:Eighth Conference on Applied Climatology,1993.
[8] 赵林,武建军,吕爱锋,等.黄淮海平原及其附近地区干旱时空动态格局分析——基于标准化降雨指数[J].资源科学,2011,33(3):468-476.
[Zhao Lin,Wu Jianjun,Lü Aifeng,et al.Spatial and temporal analysis of drought over the Huang-Huai-Hai Plain and its surroundings based on the Standardized Precipitation Index[J].Resources Science,2011,33(3):468-476.]
[9] 轩俊伟,郑江华,刘志辉.基于SPEI的新疆干旱时空变化特征[J].干旱区研究,2016,33(2):338-344.
[Xuan Junwei,Zheng Jianghua,Liu Zhihui.SPEI-based spatiotemporal variation of drought in Xinjiang[J].Remote Sensing of Environment,2016,33(2):338-344.]
[10] Sergio M Vicente-Serrano,Juan I López-Moreno,Jorge Lorenzo-Lacruz,et al.The NAO impact on droughts in the Mediterranean Region[J].Advances in Global Change Research,2011,46:23-40.
[11] Patricia Ann Jaranilla-Sanchez,Wang Lei,Toshio Koike.Modeling the hydrologic responses of the Pampanga River basin,Philippines:A quantitative approach for identifying droughts[J].Water Resources Research,2011,doi.org/10.1029/2010WR009702
[12] 徐一丹,任传友,马熙达,等.基于SPI /SPEI 指数的东北地区多时间尺度干旱变化特征对比分析[J].干旱区研究,2017,34(6):1250-1262.
[Xu Yidan,Ren Chuanyou,Ma Xida,et al.Change of drought at multiple temporal scales based on SPI/SPEI in Northeast China [J].Remote Sensing of Environment,2017,34(6):1250-1262.]
[13] 董婷,孟令奎,张文.1961—2012年我国干旱演变特征[J].干旱区研究,2018,35(1):96-106.
[Dong Ting,Meng Lingkui,Zhang Wen.Evolution of drought in China during the period of 1961-2012[J].Remote Sensing of Environment,2018,35(1):96-106.]
[14] 张强,姚玉璧,李耀辉,等.中国西北地区干旱气象灾害监测预警与减灾技术研究进展及其展望[J].地球科学进展,2015,30(2):196-213.
[Zhang Qiang,Yao Yubi,Li Yaohui,et al.Research progress and prospect on the monitoring and early warning and mitigation technology of meteorological drought disaster in northwest China[J].Advances in Earth Science,2015,30(2):196-213.]
[15] 谢培,顾艳玲,张玉虎,等.1961—2015年新疆降水及干旱特征分析[J].干旱区地理,2017,40(2):332-338.
[Xie Pei,Gu Yanling,Zhang Yuhu,et al.Precipitation and drought characteristics in Xinjiang during 1961-2015[J].Arid Land Geography,2017,40(2):332-338.]
[16] 潘淑坤,张明军,汪宝龙,等.近51年新疆S干旱指数变化特征分析[J].干旱区资源与环境,2013,27(3):32-39.
[Pan Shukun,Zhang Mingjun,Wang Baolong,et al.Study on the drought index variation for Xinjiang in recent 51 years[J].Journal of Arid Land Resources and Environment,2013,27(3):32-39.]
[17] 尹文杰,张梦琳,胡立堂.柴达木盆地干旱时空变化特征[J].干旱区研究,2018,35(2):387-394.
[Yin Wenjie,Zhang Menglin,Hu Litang.Spatiotemporal variation of drought in the Qaidam Basin[J].Arid Zone Research,2018,35(2):387-394.]
[18] 魏文寿,袁玉江,喻树龙,等.中国天山山区235 a气候变化及降水趋势预测[J].中国沙漠,2008,28(5):803-808.
[Wei Wenshou,Yuan Yujiang ,Yu Shulong,et al.Climate change in recent 235 years and trend prediction in Tianshan Mountainous area[J].Journal of Desert Research,2008,28(5):803-808.]
[19] 高瑞,王龙,杨茂灵,等.基于 SPEI 的南盘江流域近 40 年冬春干旱时空特征研究[J].灌溉排水学报,2013,32(3):67-70.
[Gao Rui,Wang Long,Yang Maoling,et al.Spatio-temporal characteristic of winter and spring drought based on standardized precipitation evapo-transpiration index in Nanpanjiang Basin[J].Journal of Irrigation and Drainage,2013,32(3):67-70.]
[20] 张强,邹旭恺,肖风劲.GB/T 20481-2006,气象干旱等级[S].北京:中国标准出版社,2006:12-17.
[Zhang Qiang,Zou Xukai,Xiao Fengjin.GB/T20481-2006 Classification of Meteorological Drought Category[S].Beijing:Standards Press of China,2006:12-17.]
[21] McKee T B,Doesken N J,Kleist J,et al.Drought monitoring with multiple time scales[C]//Proceedings of the Ninth Conference on Applied Climatology.Boston:American Meteorological Society,1995:233-236.
[22] 冯缨,许鹏,安沙舟,等.天山北坡中段草地类型多样性研究[J].干旱区资源与环境,2005,19(4):59-62.
[Feng Ying,Xu Peng,An Shazhou,et al.Study on the diversity of rangeland type in middle zone of northern slop of Tianshan Mountain[J].Journal of Arid Land Resources and Environment,2005,19(4):59-62.]
[23] 姜大膀,苏明峰,魏荣庆,等.新疆气候的干湿变化及其趋势预估[J].大气科学,2009,33(1):90-98.
[Jiang Dabang,Su Mingfeng,Wei Rongqing,et al.Variation and projection of drought and wet conditions in Xinjiang[J].Chinese Journal of Atmospheric Sciences,2009,33(1):90-98.]
[24] 袁玉江,穆桂金.新疆天山山区近40年春季气候变化特征与平原区的比较[J].干旱区地理,2004,27(1):35-40.
[Yuan Yujiang,Mu Guijin.Features of spring climate change in Tianshan Mountainous area for the recent 40 years and comparison with that in plain area of Xinjiang[J].Arid Land Geography,2004,27(1):35-40.]
[25] 苏清荷,安沙舟,赵玲.基于5种气候生产力模型的天山北坡主要草地类型NPP计算分析[J].新疆农业科学,2010,47(9):1786-1791.
[Su Qinghe,An Shazhou,Zhao Ling.Computation and analysis of NPP in northern slope of Tianshan Mountain based on 5 kinds of Climate:Productivity model[J].Xinjiang Agricultural Sciences,2010,47(9):1786-1791.]
[26] 黄敬峰,李建龙.天山北坡天然草地干旱等级及指标初探[J].草业科学,1992,9(2):43-46.
[Huang Jingfeng,Li Jianlong.The drought grade,type and indices in natural steppe of The North Slope of Tianshan[J].Pratacultural Science,1992,9(2):43-46.]
[27] 李明,王贵文,张莲芝.基于SPEI的中国东北地区干旱分区及其气候特征分析[J].干旱区资源与环境,2016,30(6):65-70.
[Li Ming,Wang Guiwen,Zhang Lianzhi.Drought characteristics analysis and the zoning based on standardized precipitation evapotranspiration index in Northeast China[J].Journal of Arid Land Resources and Environment,2016,30(6):65-70.]
[28] 熊光洁,张博凯,李崇银,等.基于SPEI的中国西南地区1961—2012年干旱变化特征分析[J].气候变化研究进展,2013,9(3):192-198.
[Xiong Guangjie,Zhang Bokai,Li Chongyin,et al.Characteristics of drought variations in Southwest China in 1961-2012 based on SPEI[J].Advances in Climate Change Research,2013,9(3):192-198.]
[29] 许玲燕,王慧敏,段琪彩,等.基于SPEI的云南省夏玉米生长季干旱时空特征分析[J].资源科学,2013,35(5):1024-1034.
[Xu Lingyan,Wang Huimin,Duan Qicai,et al.The temporal and spatial distribution of drought during summer corn growth in Yunnan Province based on SPEI[J].Resources Science,2013,35(5):1024-1034.]
[30] 张勃,张耀宗,任培贵,等.基于SPEI法的陇东地区近50 a干旱化时空特征分析[J].地理科学,2015,35(8):999-1006.
[Zhang Bo,Zhang Yaozong,Ren Peigui.Analysis of drought spatial-temporal characteristics based on SPEI in eastern region of Gansu in recent 50 years[J].Scientia Geographica Sinica,2015,35(8):999-1006.]
[31] 张调风,李林,刘宝康,等.基于SPEI指数的近52年青海省农(牧)作物生长季干旱动态格局分析[J].生态学杂志,2014,33(8):2221-2227.
[Zhang Tiaofeng,Li Lin,Liu Baokang,et al.Dynamic pattern of drought in crop (grass) growth season over Qinghai Province during last 52 years,based on standardized precipitation evapotranspiration index[J].Chinese Journal of Ecology,2014,33(8):2221-2227.]
[32] 马琼,张勃,王东,等.1960—2012年甘肃黄土高原干旱时空变化特征分析[J].资源科学,2014,36(9):1834-1841.
[Ma Qiong,Zhang Bo,Wang Dong,et al.The temporal and spatial distribution of drought on the Loess Plateau based on the standardized precipitation evapotranspiration index from 1960 to 2012[J].Resources Science,2014,36(9):1834-1841.]
[33] 周丹,张勃,任培贵,等.基于标准化降水蒸散指数的陕西省近50 a干旱特征分析[J].自然资源学报,2014,29(4):677-688.
[Zhou Dan,Zhang Bo,Ren Peigui,et al.Analysis of drought characteristics of Shaanxi Province in recent 50 years based on standardized precipitation evapotranspiration index[J].Journal of Natural Resources,2014,29(4):677-688.]