干旱区生态环境知识资源中心(Arid): Variations in aeolian landform patterns in the Gonghe Basin over the last 30 years

Arid

DOI	10.1007/s11629-020-6378-7
	Variations in aeolian landform patterns in the Gonghe Basin over the last 30 years
	Qi Yu-han; Pan Mei-hui; Hao Ze-wen; Yang An-na; Xue Wen-xuan
通讯作者	Pan, MH (corresponding author), Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China.
来源期刊	JOURNAL OF MOUNTAIN SCIENCE
ISSN	1672-6316
EISSN	1993-0321
出版年	2021
卷号	18 期号:8 页码:2034-2047
英文摘要	Wind erosion, or the transportation and deposition of sand into desert dunes and aeolian loess, is one of the most important aeolian activities. The progression of aeolian landforms expands arid and barren landscapes, leading to the degradation of adjacent areas. The Gonghe Basin, as a typical plateau with abundant sand sources, is highly sensitive to changes in the local climate conditions. In order to quantify the spatial-temporal variations in the aeolian landforms in the Gonghe Basin, we conducted field surveys and also analyzed twelve remote sensing (Landsat5 TM and Landsat8 OLI) images that sample the Gonghe Basin from 1989 to 2019. In the Gonghe Basin, we identified aeolian landforms such as climbing dunes on the windward slopes of the foothills, checkerboard dunes in the southeastern part of the basin, flat dunes, parabolic dunes and crescent dunes on the east and west sides of Longyangxia Reservoir, shrubby sandbanks on the valley slope in Shazhuyu, Tanggemu, and Indel, and sandy thickets at the bottom of the valley near the Dalian Sea, the Longyangxia Reservoir, and the tributaries of the Yellow River. From 1989 to 2005, the area of the aeolian regions expanded by 816.7 km(2), with an annual conversion rate of 0.05%. From 2015 to 2019, the area of the aeolian regions shrunk by 2411.9 km(2), with an annual conversion rate of -0.15%. The number and size of the fixed and semi-fixed dunes (e.g. the shrubby sandbanks on the valley slope and the sandy thickets at the bottom of the valley) were more stable than those of the mobile dunes (e.g. the checkerboard dunes, the flat dunes, the crescent dunes, the parabolic dunes, and the climbing dunes). The fixed and semi-fixed dunes were arranged in an irregular ring shape, and the location of the center of gravity of this ring did not change significantly from 1989 to 2019; in this time, the mobile dunes migrated to the northwest.
英文关键词	Gonghe Basin Spatial-temporal variation Aeolian processes Remote sensing interpretation Transfer matrix analysis Center of gravity migration
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000681747700005
WOS关键词	CHINESE LOESS PLATEAU ; WIND-EROSION ; TIBETAN PLATEAU ; QAIDAM BASIN ; DESERT ; DEPOSITS ; RIVER ; DUNE ; DUST ; RECORD
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363972
作者单位	[Qi Yu-han; Pan Mei-hui; Hao Ze-wen; Yang An-na; Xue Wen-xuan] Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Qi Yu-han,Pan Mei-hui,Hao Ze-wen,et al. Variations in aeolian landform patterns in the Gonghe Basin over the last 30 years[J],2021,18(8):2034-2047.
APA	Qi Yu-han,Pan Mei-hui,Hao Ze-wen,Yang An-na,&Xue Wen-xuan.(2021).Variations in aeolian landform patterns in the Gonghe Basin over the last 30 years.JOURNAL OF MOUNTAIN SCIENCE,18(8),2034-2047.
MLA	Qi Yu-han,et al."Variations in aeolian landform patterns in the Gonghe Basin over the last 30 years".JOURNAL OF MOUNTAIN SCIENCE 18.8(2021):2034-2047.