别里库姆沙漠胡杨沙堆回涡沙丘形态特征与空间格局  

Morphological characteristics and spatial pattern of echo dunes of populus euphratica nebkhas in the Birkum Desert

作　　者：孔霄 来风兵[1,2] 陈蜀江[1,2] 朱选 KONG Xiao;LAI Feng-bing;CHEN Shu-jiang;ZHU Xuan(College of Geography and Tourism,Xinjiang Normal University,Urumqi 830054,China;Institute of Space Remote Sensing Applications,Xinjiang Normal University,Urumqi 830054,China;Monash University,Melbourne 3800,Australia)

机构地区：[1]新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054 [2]新疆师范大学乌鲁木齐空间遥感应用研究所,新疆乌鲁木齐830054 [3]莫纳什大学,澳大利亚墨尔本3800

出　　处：《泥沙研究》2020年第2期59-65,共7页Journal of Sediment Research

基　　金：新疆维吾尔自治区自然科学基金项目(2017D01A54)。

摘　　要：以别里库姆沙漠为研究区域,应用无人机倾斜摄影对胡杨沙堆回涡沙丘进行航拍,采用Agisoft处理航拍影像并获取DOM,利用Arc GIS10.2和SPSS19.0软件分析提取6个样区共60个回涡沙丘的形态特征,并进行其空间格局研究。结果表明:胡杨沙堆回涡沙丘的整体形态与新月形沙丘相似,迎风坡长而缓、背风坡短而陡。形态参数间存在明显的空间差异,不对称特性明显。胡杨沙堆回涡沙丘及胡杨沙堆形态参数间相关性良好,部分形态参数间存在函数关系。胡杨沙堆回涡沙丘总体上呈片状稀疏分布。各样区沙丘服从聚集分布和随机分布,且聚集程度随距离尺度的增加而增强。分布密度南部大于北部、东部大于西部。聚集度北部高于南部、东部高于西部。The UAV tilt photography of echo dunes of populus euphratica nebkhas was carried out for the Birkum desert.The aerial image and DOM were processed and obtained by Agisoft.The morphological characteristics of the 60 echo sand dunes in 6 simpling areas were studied for the spatial patterns by ArcGIS 10.2 and SPSS software.The results showed that the overall shape of echo dunes of populus euphratica nebkhas is similar to that of the barchan dunes,the windward slope is long and gentle,while the leeward slope is short and steep.There are obvious spatial differences between the morphological parameters,and the asymmetry is obvious.The correlation between morphological parameters of echo dunes and populus euphratica nebkhas is agree well by a function.Most echo dunes are sparsely distributed in sheets.Echo dunes in each sampling area agree with the aggregate distribution and random distribution.The aggregation degree increases with the increase of distance scale.The distribution density in the south is higher than that in the north and east.

关 键 词：胡杨沙堆回涡沙丘 无人机倾斜摄影 形态特征 空间格局 

分 类 号：P931.3[天文地球—自然地理学]