When and where did the Loess Plateau turn "green"? Analysis of the tendency and breakpoints of the normalized difference vegetation index

doi:10.1002/ldr.2852

	When and where did the Loess Plateau turn "green"? Analysis of the tendency and breakpoints of the normalized difference vegetation index
	Cao, Zhi 1,2; Li, Yurui 1,2; Liu, Yansui 1,2; Chen, Yufu 1,2; Wang, Yongsheng 1,2
刊名	LAND DEGRADATION & DEVELOPMENT
	2018
卷号	29 期号:1 页码:162-175
关键词	abrupt change in NDVI break points of NDVI Loess Plateau NDVI the Grain for Green Project
ISSN号	1085-3278
DOI	10.1002/ldr.2852
通讯作者	Liu, Yansui(liuys@igsnrr.ac.cn)
英文摘要	The Loess Plateau experiences the most serious soil erosion problems in China and possibly even globally. Many measures have been taken to increase the vegetation cover and to control soil erosion. Of these measures, the Grain for Green Project, launched in 1999, has been the most effective, changing the ecological and socio-economic situation of the Plateau significantly. Using time series normalized difference vegetation index (NDVI) data from 1981 to 2013, this study analysed spatial patterns of changes in vegetation cover, detected spatial patterns of the abrupt-change time of NDVI trends, and investigated factors that may contribute to these changes. The results showed that (a) vegetation restoration was obvious over the last decades, especially in the 2000s, and the increase in NDVI during 2000-2013 was more than 3-times that during 1990-2000. Approximately 54.99% of the Plateau during 2000-2013 had a statistically significant increase, mainly distributing in loess hilly and gully region and loess gully region. (b) Vegetation restoration was comprehensively affected by climate change and human activities (e.g., the Grain for Green Project, urbanization and policies), and the effects of each factor varied for different regions. (c) Vegetation in most of the Plateau began to increase around 2007-2010, and 4 discrete areas with different timings of such break points were detected. The difference in the timing of break points in NDVI may be related with precipitation, reproducing tree species, management measures, and survival rate. These results imply that integrating natural and human factors is important when making effective and suitable measures and policies.
资助项目	National Key Research and Development Program of China[2017YFC0504700] ; National Natural Science Foundation of China[41571166]
WOS关键词	SOIL-EROSION ; LAND-USE ; ECOLOGICAL RESTORATION ; ECOSYSTEM SERVICES ; YELLOW-RIVER ; CHINA ; GRAIN ; PROJECT ; REGION ; PRECIPITATION
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	WILEY
WOS记录号	WOS:000423123700015
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/56884]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Yansui
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Ctr Assessment & Res Targeted Poverty Alleviat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Cao, Zhi,Li, Yurui,Liu, Yansui,et al. When and where did the Loess Plateau turn "green"? Analysis of the tendency and breakpoints of the normalized difference vegetation index[J]. LAND DEGRADATION & DEVELOPMENT,2018,29(1):162-175.
APA	Cao, Zhi,Li, Yurui,Liu, Yansui,Chen, Yufu,&Wang, Yongsheng.(2018).When and where did the Loess Plateau turn "green"? Analysis of the tendency and breakpoints of the normalized difference vegetation index.LAND DEGRADATION & DEVELOPMENT,29(1),162-175.
MLA	Cao, Zhi,et al."When and where did the Loess Plateau turn "green"? Analysis of the tendency and breakpoints of the normalized difference vegetation index".LAND DEGRADATION & DEVELOPMENT 29.1(2018):162-175.