文献类型：期刊文献

中文题名：基于实测数据的库姆塔格沙漠南北两侧洪积扇降水特征分析

英文题名：Precipitation characteristics in alluvial fan in the north and south of Kumtag Desert based on measured data

作者：庞营军[1,2,3] 吴波[1,2] 孔德庸[4] 高君亮[5]

第一作者：庞营军

机构：[1]中国林业科学研究院荒漠化研究所,北京100091;[2]荒漠生态系统与全球变化国家林业和草原局重点实验室,北京100091;[3]库姆塔格荒漠生态系统定位研究站,甘肃敦煌736200;[4]韶关学院,广东韶关512005;[5]中国林业科学研究院沙漠林业实验中心,内蒙古磴口015200

年份：2021

卷号：38

期号：1

起止页码：144-153

中文期刊名：干旱区研究

外文期刊名：Arid Zone Research

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家科技基础性工作专项(2017FY100206);中国林业科学研究院荒漠化研究所课题结余经费新立项项目(IDS2019JY-4);国家自然科学基金项目(41471151,41701010)资助。

语种：中文

中文关键词：库姆塔格沙漠;降水;洪积扇

外文关键词：Kumtag Desert;precipitation;alluvial fan

分类号：P931.3;P426.6

摘要：利用库姆塔格沙漠南北两侧洪积扇2017年6月至2018年5月的野外实测降水数据,对其降水特征进行了详细的分析,结果表明:(1)受地理位置、地形等的影响,库姆塔格沙漠降水空间分布差异较大。北侧北山洪积扇三垄沙地区的年降水量最小,为21.6 mm;南侧阿尔金山洪积扇降水量自西向东逐渐增多,胡杨沟上游、乌什喀特、赛马沟和多坝沟的年降水量分别为73.0、75.2、176.0 mm和137.4 mm;南侧阿尔金山洪积扇降水量大致自北向南逐渐增多,胡杨沟下游和中游年降水量分别为58.0 mm和56.4 mm,小于胡杨沟上游。(2)库姆塔格沙漠南北两侧洪积扇的降水主要发生在5—8月,累计降水量占到全年90%左右。(3)库姆塔格沙漠南北两侧洪积扇年降水次数介于11~26次,数量较少的大降水事件对年总降水量贡献率大。
This study analyzed the precipitation characteristics in detail using the field precipitation data from June 2017 to May 2018 in alluvial fan in the north and south of Kumtag Desert.The results are as follows:(1)Due to the effect of geographical location,topography,etc.,the spatial distributions of precipitation in Kumtag Desert vary greatly.The minimum annual precipitation in Sanlongsha,Beishan alluvial fan in the north of Kumtag Desert,is 21.6 mm.The precipitation in Altun alluvial fan in the south of Kumtag Desert gradually increases from west to east,and the annual precipitation in upper reach of Huyang,Wushikate,Saimagou,and Duobagou ditches is 73.0、75.2、176.0 mm,and 137.4 mm,respectively.The precipitation in Altun alluvial fan in the south of Kumtag Desert gradually increases from the north to south and the annual precipitation in lower and middle reaches of Huyang ditch is 58.0 and 56.4 mm,respectively,which is lower than that in upper reach of Huyang ditch.(2)The precipitation in alluvial fan in the north and south of Kumtag Desert mainly occurs from May to August and the cumulative precipitation can account for more than 90%of full year.(3)The number of precipitation events in alluvial fan in the north and south of Kumtag Desert lies between 11 and 26,and a small number of large precipitation events contributes immensely to the total annual precipitation.