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中国沙漠  2019, Vol. 39 Issue (6): 200-208    DOI: 10.7522/j.issn.1000-694X.2019.00053
    
塔克拉玛干别里库姆沙漠根管砾幕形态及分布
罗海燕1,2, 来风兵1,2, 陈蜀江1,2, 朱选3
1. 新疆师范大学 地理科学与旅游学院, 新疆 乌鲁木齐 830054;
2. 乌鲁木齐空间遥感应用研究所, 新疆 乌鲁木齐 830054;
3. 蒙纳士大学, 澳大利亚 墨尔本 3800
Morphological Characteristics and Spatial Distribution of Root Canal Gravel in Belikom Desert, Taklimakan
Luo Haiyan1,2, Lai Fengbing1,2, Chen Yujiang1,2, Zhu Xuan3
1. College of Geographical Science and Tourism, Xinjiang Normal University, Urumqi 830054, China;
2. Urumqi Institute of Remote Sensing Applications, Urumqi 830054, China;
3. Monash University, Melbourne 3800, Australia
 全文: PDF(11480 KB)  
摘要: 陆生高等植物死亡后,在漫长的地质演化过程中,经过水、沙土共同作用形成植物根管,根管在风、沙共同作用下风蚀为沙漠地表根管大颗粒,成片的根管大颗粒在沙漠中形成根管砾幕,这一新的风沙地貌类型广泛分布于塔克拉玛干别里库姆沙漠。基于野外采样、无人机近景航测和Landsat8 OLI遥感影像等数据,应用形态学及空间统计分析方法,定量分析了塔克拉玛干别里库姆沙漠根管砾幕的形态特征及空间分布。结果表明:(1)研究区内根管形态极不规则,质地坚硬,以片状、管状、粒状分布于塔克拉玛干别里库姆沙漠;(2)研究区内根管砾幕形态从南向北、自西向东均以椭圆形为主,受丘间地形状影响,部分区域根管砾幕形态呈月牙形、圆形或不规则多边形,总体来看,研究区内根管砾幕形态特征空间差异显著;(3)研究区南北向根管砾幕破碎度47.78%~48.74%,根管颗粒分布平均密度9 925粒·m-2,东西向根管砾幕破碎度19.00%~70.80%,根管颗粒分布平均密度9 357粒·m-2,南北向根管砾幕中根管颗粒分布平均密度大于东西向,破碎度范围小于东西向;(4)研究区根管砾幕空间分布整体由南至北呈增大-减小-增大,自西向东呈先增大后减小。
关键词: 别里库姆沙漠根管砾幕形态特征空间分布    
Abstract: After the death of higher plants in the terrestrial, in the long geological evolution process, the root canals are formed by the action of water and sand, and the root canals are wind-eroded into large particles of the surface roots of the desert under the action of wind and sand, and the root canals are large.The granules form a root canal in the desert.This new type of aeolian landform is widely distributed in the Taklimakan Biliqm Desert.Based on data from field sampling, UAV close-up aerial survey and Landsat8 OLI remote sensing image, this study used morphological and spatial statistical analysis methods to quantitatively analyze the morphological characteristics and spatial distribution of the root-tube gravel in the Taklimakan Bilicum desert.The results showed that:(1) the shape of root canal in the study area was extremely irregular and the texture was hard, distributed in the form of flakes, tubes and grains in the Taklimakan Biliqum desert. (2) the shape of the root canal in the study area from south to north From the west to the east, the ellipse is mainly dominated by the shape of the inter-hill, and the shape of the root canal in some areas is crescent-shaped, round or rectangular.Overall, the spatial characteristics of the root-tube gravel in the study area are significantly different.(3) The north-south root tube gravel fragmentation degree of the study area is 47.78%-48.74%, the root canal particle distribution average density is 9 925 pieces·m-2, and the east-west root tube gravel fragmentation degree is 19.00%-70.80%, root canal The average density of particle distribution is 9 357 m·m-2, and the average density of root canal particle distribution in the north-south root canal is larger than the east-west direction, and the variation range of the fragmentation degree is smaller than the east-west direction.(4) The overall spatial distribution of the root canal curtain in the study area From south to north, it increases-decreases-increases, and increases from west to east first and then decreases.
Key words: Berikom Desert    root canal gravel    morphological characteristics    spatial distribution
收稿日期: 2019-05-09 出版日期: 2019-11-14
ZTFLH:  Q948.11  
基金资助: 新疆维吾尔自治区自然科学基金项目(2017D01A54)
通讯作者: 来风兵(E-mail:laifengbing@163.com)     E-mail: laifengbing@163.com
作者简介: 罗海燕(1992-),女,新疆伊犁人,硕士研究生,主要从事干旱区资源与环境演变研究。E-mail:1657042956@qq.com
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引用本文:

罗海燕, 来风兵, 陈蜀江, 朱选. 塔克拉玛干别里库姆沙漠根管砾幕形态及分布[J]. 中国沙漠, 2019, 39(6): 200-208.

Luo Haiyan, Lai Fengbing, Chen Yujiang, Zhu Xuan. Morphological Characteristics and Spatial Distribution of Root Canal Gravel in Belikom Desert, Taklimakan. Journal of Desert Research, 2019, 39(6): 200-208.

链接本文:

http://www.desert.ac.cn/CN/10.7522/j.issn.1000-694X.2019.00053        http://www.desert.ac.cn/CN/Y2019/V39/I6/200

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