干旱区生态环境知识资源中心(Arid): Spatial-temporal dynamics of desert vegetation and its responses to climatic variations over the last three decades: a case study of Hexi region in Northwest China

Arid

	Spatial-temporal dynamics of desert vegetation and its responses to climatic variations over the last three decades: a case study of Hexi region in Northwest China
	Yang Xuemei; Liu Shizeng; Yang Taibao; Xu Xianying; Kang Caizhou; Tang Jinnian; Wei Huaidong; Mihretab G Ghebrezgabher; Li Zhiqi
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2016
卷号	8 期号:4 页码:556-568
英文摘要	Analysis of spatial-temporal variations of desert vegetation under the background of climate changes can provide references for ecological restoration in arid and semi-arid areas. In this study, we used the Global Inventory Modeling and Mapping Studies (GIMMS) NDVI data from 1982 to 2006 and Moderate Resolution Imaging Spectroradiometer (MODIS) NDVI data from 2000 to 2013 to reveal the dynamics of desert vegetation in Hexi region of Northwest China over the past three decades. We also used the annual temperature and precipitation data acquired from the Chinese meteorological stations to analyze the response of desert vegetation to climatic variations. The average value of NDVImax (the maximum NDVI during the growing season) for desert vegetation in Hexi region increased at the rate of 0.65*10~(-3)/a (P<0.05) from 1982 to 2013, and the significant increases of NDVImax mainly appeared in the typical desert vegetation areas. Vegetation was significantly improved in the lower reaches of Shule and Shiyang river basins, and the weighted mean center of desert vegetation mainly shifted toward the lower reaches of the two basins. Almost 95.32% of the total desert vegetation area showed positive correlation between NDVImax and annual precipitation, indicating that precipitation is the key factor for desert vegetation growth in the entire study area. Moreover, the areas with non-significant positive correlation between NDVImax and annual precipitation mainly located in the lower reaches of Shiyang and Shule river basins, this may be due to human activities. Only 7.64% of the desert vegetation showed significant positive correlation between NDVImax and annual precipitation in the Shule River Basin (an extremely arid area), indicating that precipitation is not the most important factor for vegetation growth in this basin, and further studies are needed to investigate the mechanism for this phenomenon.
英文关键词	desert vegetation NDVI global warming spatial-temporal variations Hexi region
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5722407
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335661
作者单位	Yang Xuemei, Gansu Desert Control Research Institute, State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Lanzhou, Gansu 730070, China.; Liu Shizeng, Gansu Desert Control Research Institute, State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Lanzhou, Gansu 730070, China.; Xu Xianying, Gansu Desert Control Research Institute, State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Lanzhou, Gansu 730070, China.; Kang Caizhou, Gansu Desert Control Research Institute, State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Lanzhou, Gansu 730070, China.; Tang Jinnian, Gansu Desert Control Research Institute, State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Lanzhou, Gansu 730070, China.; Wei Huaidong, Gansu Desert Control Research Institute, State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Com...
推荐引用方式 GB/T 7714	Yang Xuemei,Liu Shizeng,Yang Taibao,et al. Spatial-temporal dynamics of desert vegetation and its responses to climatic variations over the last three decades: a case study of Hexi region in Northwest China[J],2016,8(4):556-568.
APA	Yang Xuemei.,Liu Shizeng.,Yang Taibao.,Xu Xianying.,Kang Caizhou.,...&Li Zhiqi.(2016).Spatial-temporal dynamics of desert vegetation and its responses to climatic variations over the last three decades: a case study of Hexi region in Northwest China.Journal of Arid Land,8(4),556-568.
MLA	Yang Xuemei,et al."Spatial-temporal dynamics of desert vegetation and its responses to climatic variations over the last three decades: a case study of Hexi region in Northwest China".Journal of Arid Land 8.4(2016):556-568.