干旱区生态环境知识资源中心(Arid): Quantification of driving factors on NDVI in oasis-desert ecotone using geographical detector method

Arid

DOI	10.1007/s11629-018-5361-7
	Quantification of driving factors on NDVI in oasis-desert ecotone using geographical detector method
	Zhang, Yu 1,2; Zhang, Ke-cun 1; An, Zhi-shan 1; Yu, Yan-ping 1,2
通讯作者	Zhang, Ke-cun
来源期刊	JOURNAL OF MOUNTAIN SCIENCE
ISSN	1672-6316
EISSN	1993-0321
出版年	2019
卷号	16 期号:11 页码:2615-2624
英文摘要	Within oasis-desert ecotone regions, the normalized difference vegetation index (NDVI) is an important parameter for evaluating the growth of vegetation. An accurate quantitative study between NDVI and environmental and anthropogenic factors is critical for understand the driving factors of vegetation growth in oasis-desert ecotone. In 2016, four periods Landsat 8 OLI_TIRS images, relevant climatological parameters data (air temperature, air relative humidity, wind velocity and accumulated temperature), land cover type data and soil data were selected as proxies. In order to quantify the explanatory power for NDVI spatial and temporal distribution in the southern edge of Dunhuang City and northern side of the Mingsha Mountain, the geographical detector model was used to explain the potential influences of factors versus the spatial distribution of NDVI, and each explanatory variable's relative importance can be calculated. The factor detector results disclose that the spatial distribution of NDVI is primarily dominated by land cover type. The risk detector results show that, high NDVI region is located within woodland. The mean value of NDVI displays an increase and then decrease trend with air temperature increase. With the increase of wind velocity and decrease of air relative humidity, the NDVI value shows a decrease trend. The interactive q values between the two factors are higher than any q value of separated factors. Results also indicate that the strongest interactive effects of NDVI are different in distinct seasons. Consequently, anthropogenic activity is more important than environmental factors on NDVI in oasis-desert ecotone. We also demonstrate that air relative humidity rather than air temperature have played a greater role in NDVI spatial distribution.
英文关键词	Influence factors Normalized difference vegetation index Geographical detector Oasis-desert ecotone
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000495245200012
WOS关键词	WIND-BLOWN SAND ; HEXI CORRIDOR ; TEMPERATURE ; REGION ; PRECIPITATION ; RESPONSES ; DUNHUANG ; SURFACE ; AREA ; DESERTIFICATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310499
作者单位	1.Chinese Acad Sci, Key Lab Desert & Desertificat, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yu,Zhang, Ke-cun,An, Zhi-shan,et al. Quantification of driving factors on NDVI in oasis-desert ecotone using geographical detector method[J],2019,16(11):2615-2624.
APA	Zhang, Yu,Zhang, Ke-cun,An, Zhi-shan,&Yu, Yan-ping.(2019).Quantification of driving factors on NDVI in oasis-desert ecotone using geographical detector method.JOURNAL OF MOUNTAIN SCIENCE,16(11),2615-2624.
MLA	Zhang, Yu,et al."Quantification of driving factors on NDVI in oasis-desert ecotone using geographical detector method".JOURNAL OF MOUNTAIN SCIENCE 16.11(2019):2615-2624.