气候变化领域集成服务门户(CCPortal): Temporal and Spatial Variations in NDVI and Analysis of the Driving Factors in the Desertified Areas of Northern China From 1998 to 2015

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DOI	10.3389/fenvs.2021.633020
	Temporal and Spatial Variations in NDVI and Analysis of the Driving Factors in the Desertified Areas of Northern China From 1998 to 2015
	Wang, Xuyang; Li, Yuqiang; Wang, XinYuan; Li, Yulin; Lian, Jie; Gong, Xiangwen
通讯作者	Li, YQ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China. ; Li, YQ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Tongliao, Peoples R China. ; Li, YQ (通讯作者)，Univ Chinese Acad Sci, Beijing, Peoples R China.
发表日期	2021
EISSN	2296-665X
卷号	9
英文摘要	China faces some of the most serious desertification in the world, leading to many problems. To solve them, large-scale ecological restoration projects were implemented. To assess their effectiveness, we analyzed normalized-difference vegetation index (NDVI) data derived from SPOT VEGETATION and gridded climate datasets from 1998 to 2015 to detect the degrees of desertification and the effects of human and climate drivers on vegetation dynamics. We found that NDVI of desertified areas generally decreased before 2000, then increased. The annual increase in NDVI was fixed dunes (0.0013) = semi-fixed dunes (0.0013) > semi-mobile dunes (0.0012) > gobi (gravel) desert (0.0011) > mobile dunes (0.0003) > saline-alkali land (0.0000). The proportions of the area of each desert type in which NDVI increased were fixed dunes (43.4%) > semi-mobile dunes (39.7%) > semi-fixed dunes (26.7%) > saline-alkali land (23.1%) > gobi desert (14.4%) > mobile dunes (12.5%). Thus, the vegetation response to the restoration efforts increased as the initial dune stability increased. The proportion of the area where desertification was dominated by temperature (1.8%) was far less than the area dominated by precipitation (14.1%). However, 67.6% of the change was driven by non-climatic factors. The effectiveness of the ecological restoration projects was significant in the Loess Plateau and in the Mu Us, Horqin, and Hulunbuir sandy lands. In contrast, there was little effect in the Badain Jaran, Ulan Buh, and Tengger deserts; in particular, vegetation cover has declined seriously in the Hunshandake Sandy Land and Alkin Desert Grassland. Thus, more or different ecological restoration must be implemented in these areas.
关键词	NET PRIMARY PRODUCTION TIME-SERIES ECOLOGICAL RESTORATION VEGETATION COVER SANDY LAND NOAA-AVHRR PRECIPITATION CLIMATE LANDSCAPE PHENOLOGY
英文关键词	desert; ecological restoration; desertification; NDVI; climate factors
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000626030400001
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253776
作者单位	[Wang, Xuyang; Li, Yuqiang; Li, Yulin; Lian, Jie; Gong, Xiangwen] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Wang, Xuyang; Li, Yuqiang; Li, Yulin; Lian, Jie] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Tongliao, Peoples R China; [Li, Yuqiang; Li, Yulin; Gong, Xiangwen] Univ Chinese Acad Sci, Beijing, Peoples R China; [Wang, XinYuan] Gansu Inst Forestry Survey & Planning, Lanzhou, Peoples R China; [Wang, XinYuan] Ecol Environm Supervis & Adm Bur Gansu Prov, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xuyang,Li, Yuqiang,Wang, XinYuan,et al. Temporal and Spatial Variations in NDVI and Analysis of the Driving Factors in the Desertified Areas of Northern China From 1998 to 2015[J]. 中国科学院西北生态环境资源研究院,2021,9.
APA	Wang, Xuyang,Li, Yuqiang,Wang, XinYuan,Li, Yulin,Lian, Jie,&Gong, Xiangwen.(2021).Temporal and Spatial Variations in NDVI and Analysis of the Driving Factors in the Desertified Areas of Northern China From 1998 to 2015.FRONTIERS IN ENVIRONMENTAL SCIENCE,9.
MLA	Wang, Xuyang,et al."Temporal and Spatial Variations in NDVI and Analysis of the Driving Factors in the Desertified Areas of Northern China From 1998 to 2015".FRONTIERS IN ENVIRONMENTAL SCIENCE 9(2021).