干旱区生态环境知识资源中心(Arid): Spatial associations between NDVI and environmental factors in the Heihe River Basin

Arid

DOI	10.1007/s11442-019-1676-0
	Spatial associations between NDVI and environmental factors in the Heihe River Basin
	Yuan Lihua 1; Chen Xiaoqiang 1; Wang Xiangyu 1; Xiong Zhe 2; Song Changqing 1,3,4
通讯作者	Song Changqing
来源期刊	JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN	1009-637X
EISSN	1861-9568
出版年	2019
卷号	29 期号:9 页码:1548-1564
英文摘要	The Heihe River Basin is located in the arid and semi-arid regions of Northwest China. Here, the terrestrial ecosystem is vulnerable, making it necessary to identify the factors that could affect the ecosystem. In this study, MODIS-NDVI data with a 250-m resolution were used as a proxy for the terrestrial ecosystem. By combining these with environmental factors, we were able to explore the spatial features of NDVI and identify the factors influencing the NDVI distribution in the Heihe River Basin during the period of 2000-2016. A geographical detector (Geodetector) was employed to examine the spatial heterogeneity of the NDVI and to explore the factors that could potentially influence the NDVI distribution. The results indicate that: (1) the NDVI in the Heihe River Basin appeared high in the southeast while being low in the north, showing spatial heterogeneity with a q-statistic of 0.38. The spatial trend of the vegetation in the three sub-basins generally increased in the growing seasons from 2000 to 2016; (2) The results obtained by the Geodetector (as denoted by the q-statistic as well as the degree of spatial association between the NDVI and environmental factors) showed spatial heterogeneity in the associations between the NDVI and the environmental factors for the overall basin as well as the sub-basins. Precipitation was the dominant factor for the overall basin. In the upper basin, elevation was found to be the dominant factor. The dominant factor in the middle basin was precipitation, closely followed by the soil type. In the lower basin, the dominant factor was soil type with a lower q-statistic of 0.13, and the dominant interaction between the elevation and soil type was nonlinearly enhanced (q-statistic = 0.22).
英文关键词	NDVI environmental factors vegetation Geodetector q-statistic spatial heterogeneity Heihe River Basin
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000480769600008
WOS关键词	VEGETATION INDEX ; TEMPORAL VARIABILITY ; CLIMATE FACTORS ; PLATEAU ; TREND ; PRECIPITATION ; TEMPERATURE ; FLUCTUATION ; SENSITIVITY ; DYNAMICS
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	北京师范大学 ; 中国科学院大气物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217050
作者单位	1.Beijing Normal Univ, Fac Geog Sci, Ctr GeoData & Anal, Beijing 100875, Peoples R China; 2.Chinese Acad Sci, Key Lab Climate Environm East Asia, Inst Atmospher Phys, Beijing 100029, Peoples R China; 3.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 4.Beijing Normal Univ, Key Lab Environm Change & Nat Disaster, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Yuan Lihua,Chen Xiaoqiang,Wang Xiangyu,et al. Spatial associations between NDVI and environmental factors in the Heihe River Basin[J]. 北京师范大学, 中国科学院大气物理研究所,2019,29(9):1548-1564.
APA	Yuan Lihua,Chen Xiaoqiang,Wang Xiangyu,Xiong Zhe,&Song Changqing.(2019).Spatial associations between NDVI and environmental factors in the Heihe River Basin.JOURNAL OF GEOGRAPHICAL SCIENCES,29(9),1548-1564.
MLA	Yuan Lihua,et al."Spatial associations between NDVI and environmental factors in the Heihe River Basin".JOURNAL OF GEOGRAPHICAL SCIENCES 29.9(2019):1548-1564.