干旱区生态环境知识资源中心(Arid): Contrasting vegetation changes in dry and humid regions of the Tibetan Plateau over recent decades

Arid

DOI	10.3724/SP.J.1226.2018.00482
	Contrasting vegetation changes in dry and humid regions of the Tibetan Plateau over recent decades
	Li, RuiQing; Gao, YanHong; Chen, DeLiang; Zhang, YongXin; Li, SuoSuo
通讯作者	Gao, YH
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2018
卷号	10 期号:6 页码:482-492
英文摘要	An overall greening over the Tibetan Plateau (TP) in recent decades has been established through analyses of remotely sensed Normalized Difference Vegetation Index (NDVI), though the regional pattern of the changes and associated drivers remain to be explored. This study used a satellite Leaf Area Index (LAI) dataset (the GLASS LAI dataset) and examined vegetation changes in humid and arid regions of the TP during 1982-2012. Based on distributions of the major vegetation types, the TP was divided roughly into a humid southeastern region dominated by meadow and a dry northwestern region covered mainly by steppe. It was found that the dividing line between the two regions corresponded well with the lines of mean annual precipitation of 400 mm and the mean LAI of 0.3. LAI=0.3 was subsequently used as a threshold for investigating vegetation type changes at the interanual and decadal time scales: if LAI increased from less than 0.3 to greater than 0.3 from one time period to the next, it was regarded as a change from steppe to meadow, and vice versa. The analysis shows that changes in vegetation types occurred primarily around the dividing line of the two regions, with clear growth (reduction) of the area covered by meadow (steppe), in consistency with the findings from using another independent satellite product. Surface air temperature and precipitation (diurnal temperature range) appeared to contribute positively (negatively) to this change though climate variables displayed varying correlation with LAI for different time periods and different regions.
英文关键词	Tibetan Plateau vegetation change leaf area index climate change
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000457535700004
WOS关键词	LEAF-AREA INDEX ; GROWING-SEASON ; CLIMATE ; TEMPERATURE ; TRENDS
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	中国科学院青藏高原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333279
作者单位	[Li, RuiQing; Gao, YanHong; Li, SuoSuo] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China; [Li, RuiQing] Inner Mongolia Autonomous Reg Meteorol Observ, Hohhot 010051, Inner Mongolia, Peoples R China; [Chen, DeLiang] Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Gothenburg, Sweden; [Chen, DeLiang] Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China; [Zhang, YongXin] Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA
推荐引用方式 GB/T 7714	Li, RuiQing,Gao, YanHong,Chen, DeLiang,et al. Contrasting vegetation changes in dry and humid regions of the Tibetan Plateau over recent decades[J]. 中国科学院青藏高原研究所,2018,10(6):482-492.
APA	Li, RuiQing,Gao, YanHong,Chen, DeLiang,Zhang, YongXin,&Li, SuoSuo.(2018).Contrasting vegetation changes in dry and humid regions of the Tibetan Plateau over recent decades.SCIENCES IN COLD AND ARID REGIONS,10(6),482-492.
MLA	Li, RuiQing,et al."Contrasting vegetation changes in dry and humid regions of the Tibetan Plateau over recent decades".SCIENCES IN COLD AND ARID REGIONS 10.6(2018):482-492.