Spatiotemporal changes of land desertification sensitivity in northwest China from 2000 to 2017

doi:10.1007/s11442-021-1832-1

	Spatiotemporal changes of land desertification sensitivity in northwest China from 2000 to 2017
	Wei Wei 2; Guo Zecheng 3; Shi Peiji 2; Zhou Liang 1,4; Wang Xufeng 5; Li Zhenya 2; Pang Sufei 2; Xie Binbin 6
刊名	JOURNAL OF GEOGRAPHICAL SCIENCES
	2021
卷号	31 期号:1 页码:46-68
关键词	desertification sensitivity spatiotemporal change geographical detector GIS northwest China
ISSN号	1009-637X
DOI	10.1007/s11442-021-1832-1
通讯作者	Guo Zecheng(18709424424@163.com)
英文摘要	Sensitivity assessment is useful for monitoring land desertification. Research into how to prevent and control desertification is also important. In the arid region of northwest China, desertification is becoming worse and is a serious problem that affects local sustainable development. Based on remote-sensing and geographic information system technology, this study establishes a "soil-terrain-hydrology-climate-vegetation" desertification sensitivity comprehensive evaluation system to reflect the spatiotemporal changes of land desertification, and proposes a spatial distance model to calculate a desertification sensitivity index. The spatiotemporal change characteristics of land desertification sensitivity in northwest China are quantitatively assessed from 2000 to 2017. Moreover, the main driving factors are analyzed using the geographical detector method. The results show the following. (1) Terrain, soil, climate, vegetation and hydrology affect and restrict each other, and constitute the background conditions of the distributions and changes of sensitivity to desertification in northwest China. (2) Desertification sensitivity generally displays a low distribution characteristic on the periphery of the area and a high one in the interior. The low-sensitivity regions are mainly in the five major mountain ranges (Altai Mountains, Tianshan Mountains, Kunlun Mountains, Altun Mountains and Qilian Mountains), while the high-sensitivity regions are mainly in regions such as the Junggar Basin, the Tarim Basin and the Inner Mongolia Plateau, as well as the Taklimakan Desert, Badain Jaran Desert and Tengger Desert. The spatial distribution of desertification sensitivity is obviously regional, and the high- and low-sensitivity regions have clear boundaries and a concentrated distribution. (3) With regard to spatiotemporal evolution, changes in desertification sensitivity since 2000 have been predominantly stable, and the overall sensitivity has displayed a slowly decreasing trend, indicating that potential desertification regions are decreasing annually and that some achievements have been made in the control of regional desertification. (4) Soil and climate play a direct role in the driving factors of desertification in northwest China, and these have been found to be the most important influential factors. Vegetation is the most active and basic factor in changing the sensitivity. In addition, topography and hydrology play a role in restricting desertification changes. Socio-economic factors are the most rapid factors affecting regional desertification sensitivity, and their impacts tend to be gradually increasing. In general, desertification has been effectively controlled in northwest China, and positive results have been achieved in such control. However, against the backdrop of intensified global climate change, increasingly prominent human activities and new normals of socio-economic development, the monitoring, assessment and control of desertification in China still have a long way to go.
资助项目	National Natural Science Foundation of China[41861040] ; National Natural Science Foundation of China[41761047] ; National Natural Science Foundation of China[41961027]
WOS关键词	EVOLUTION ; INDEX ; RISK
WOS研究方向	Physical Geography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000607867900002
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136936]
专题	中国科学院地理科学与资源研究所
通讯作者	Guo Zecheng
作者单位	1.Lanzhou Jiaotong Univ, Fac Geomat, Lanzhou 730070, Peoples R China 2.Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China 3.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China 4.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Gansu Qilian Mt Ecol Res Ctr, Lanzhou 730000, Peoples R China 6.Lanzhou City Univ, Sch Urban Econ & Tourism Culture, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Wei Wei,Guo Zecheng,Shi Peiji,et al. Spatiotemporal changes of land desertification sensitivity in northwest China from 2000 to 2017[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2021,31(1):46-68.
APA	Wei Wei.,Guo Zecheng.,Shi Peiji.,Zhou Liang.,Wang Xufeng.,...&Xie Binbin.(2021).Spatiotemporal changes of land desertification sensitivity in northwest China from 2000 to 2017.JOURNAL OF GEOGRAPHICAL SCIENCES,31(1),46-68.
MLA	Wei Wei,et al."Spatiotemporal changes of land desertification sensitivity in northwest China from 2000 to 2017".JOURNAL OF GEOGRAPHICAL SCIENCES 31.1(2021):46-68.