Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3724/SP.J.1227.2010.00272 |
Dynamic changes of a typical linear dune in the Tengger Desert | |
Zhang, KeCun1; Kai, KenJi2; Qu, JianJun1; Ling, YuQuan1; Niu, QingHe1 | |
通讯作者 | Zhang, KeCun |
来源期刊 | JOURNAL OF ARID LAND |
ISSN | 1674-6767 |
EISSN | 2194-7783 |
出版年 | 2010 |
卷号 | 2期号:4页码:272-278 |
英文摘要 | The dynamical processes of a typical linear dune including morphological features, dune ridge swing range and crest height were investigated at different monitoring periods in the hinterland of Tengger Desert. The results indicated that the development of linear dune depends on not only the northwesterly prevailing wind, but also the winds from northeast and southwest. The dune ridge swayed along its fundamental strike and took on an eastward movement gradually. The original dune strike was NW70 degrees on August 3, 1994, and then changed to NE15 degrees on April 21, 2001. The dune crest increased by 1.8 m longitudinally, which manifested strong wind-blown sand activities in this region. Wind erosion frequently occured at the bottom of sand dune, while sand accumulation appeared on its mid-upper section. The mean wind erosion depth was 25 cm on the bottom of linear dune and the height difference of the control points on the dune’s ridge was 1.13 m. Although the linear dune swayed laterally, the horizontal displacement of its ridge moved eastward 5.8 m averagely. The swing range of the dune crest line is very distinct, with a maximum value of 13.2 m. The highest site on the K-profile swayed on both sides of the dune ridge and the heights were 19.88 m at the control point K-5, 19.61 m at K-6 and 19.05 m at K-7, respectively. The results indicated that the lateral swing of the linear dune was distinct under the northwesterly wind and it moved toward east gradually. |
英文关键词 | linear sand dune dynamic change morphological feature Tengger Desert |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Japan |
收录类别 | SCI-E |
WOS记录号 | WOS:000293495900006 |
WOS关键词 | GRAIN-SIZE CHARACTERISTICS ; LONGITUDINAL DUNES ; SAND DUNE ; KALAHARI |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 中国科学院西北生态环境资源研究院 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/165009 |
作者单位 | 1.Chinese Acad Sci, Dunhuang Gobi & Desert Ecol & Environm Res Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China; 2.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4648601, Japan |
推荐引用方式 GB/T 7714 | Zhang, KeCun,Kai, KenJi,Qu, JianJun,et al. Dynamic changes of a typical linear dune in the Tengger Desert[J]. 中国科学院西北生态环境资源研究院,2010,2(4):272-278. |
APA | Zhang, KeCun,Kai, KenJi,Qu, JianJun,Ling, YuQuan,&Niu, QingHe.(2010).Dynamic changes of a typical linear dune in the Tengger Desert.JOURNAL OF ARID LAND,2(4),272-278. |
MLA | Zhang, KeCun,et al."Dynamic changes of a typical linear dune in the Tengger Desert".JOURNAL OF ARID LAND 2.4(2010):272-278. |
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