干旱区生态环境知识资源中心(Arid): The spatial-temporal distributions of controlling factors on vegetation growth in Tibet Autonomous Region, Southwestern China

Arid

DOI	10.1088/2515-7620/ab3d87
	The spatial-temporal distributions of controlling factors on vegetation growth in Tibet Autonomous Region, Southwestern China
	You, Guangyong; Arain, M. Altaf; Wang, Shusen; McKenzie, Shawn; Zou, Changxin; Wang, Zhi; Li, Haidong; Liu, Bo; Zhang, Xiaohua; Gu, Yangyang; Gao, Jixi
通讯作者	Gao, JX (corresponding author), Nanjing Inst Environm Sci, Minist Ecol & Environm, Nanjing 210042, Jiangsu, Peoples R China.
来源期刊	ENVIRONMENTAL RESEARCH COMMUNICATIONS
ISSN	2515-7620
出版年	2019
卷号	1 期号:9
英文摘要	Due to cold and arid climate of Tibet Autonomous Region, vegetation growth is considered to be controlled by both moisture availability and warmth. In order to reveal the patterns of regional climate change and the mechanisms of climate-vegetation interactions, long term (1982-2013) datasets of climate variables and vegetation activities were collected from Climatic Research Unit (CRU) and Global Inventory Monitoring and Modeling System (GIMMS). Principal regression analysis and (partial) correlation analysis were conducted to reveal the contributions of controlling factors on vegetation growth. Study results showed that (1) Annual mean air temperature (TMP) had increased by 0.38 degrees C per decade (P = 0.00) and annual precipitation (PRE) had increased by 17.25 mm per decade (P = 0.15). A significant change point around the year 1997/1998 was detected by Mann-Whitney-Pettit test, coinciding with the occurrence of El Nino event. (2) Normalized Difference Vegetation Index (NDVI) had an insignificant positive trend. Spatially, pixels of high NDVI values, great NDVI trends and high inter-annual deviations are distributed in the densely vegetated eastern part. Principal regression analysis revealed that, alpine grassland (northern and western part) is mostly controlled by temperature, steppe meadow (middle and southern part) is mostly controlled by precipitation, and shrub/mixed needle leaved and broad leaved forest (eastern part) is mostly controlled by cloud coverage. (3) Partial correlation analyses showed that regions with high sensitivity to precipitation nearly overlapped with regions of high sensitivity to minimum temperature. And the high importance of cold index (CDI, accumulated negative difference between TMP and 5 degrees C) revealed in this study implied the effects of regional glacial melting and permafrost degradation. We concluded that the regional climate change can be characterized as warming and wetting. Different regions and vegetation types in Tibet Autonomous Region demonstrated different driving climate factors and climate-vegetation relationships.
英文关键词	climate change vegetation activity change point detection controlling factors
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000579508100004
WOS关键词	LONG-TERM TRENDS ; CLIMATE-CHANGE ; AUTUMN PHENOLOGY ; RIVER-BASIN ; PLATEAU ; TEMPERATURE ; PRECIPITATION ; DYNAMICS ; IMPACTS ; LAND
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369836
作者单位	[You, Guangyong; Zou, Changxin; Wang, Zhi; Li, Haidong; Gu, Yangyang; Gao, Jixi] Nanjing Inst Environm Sci, Minist Ecol & Environm, Nanjing 210042, Jiangsu, Peoples R China; [Arain, M. Altaf; McKenzie, Shawn] McMaster Univ, Sch Geog & Earth Sci, Hamilton, ON L8S 4K1, Canada; [Arain, M. Altaf; McKenzie, Shawn] McMaster Univ, McMaster Ctr Climate Change, Hamilton, ON L8S 4K1, Canada; [Wang, Shusen] Nat Resources Canada, Canada Ctr Remote Sensing, Ottawa, ON K1A 0E4, Canada; [Liu, Bo] Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing 210044, Jiangsu, Peoples R China; [Zhang, Xiaohua] Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	You, Guangyong,Arain, M. Altaf,Wang, Shusen,et al. The spatial-temporal distributions of controlling factors on vegetation growth in Tibet Autonomous Region, Southwestern China[J]. 南京信息工程大学,2019,1(9).
APA	You, Guangyong.,Arain, M. Altaf.,Wang, Shusen.,McKenzie, Shawn.,Zou, Changxin.,...&Gao, Jixi.(2019).The spatial-temporal distributions of controlling factors on vegetation growth in Tibet Autonomous Region, Southwestern China.ENVIRONMENTAL RESEARCH COMMUNICATIONS,1(9).
MLA	You, Guangyong,et al."The spatial-temporal distributions of controlling factors on vegetation growth in Tibet Autonomous Region, Southwestern China".ENVIRONMENTAL RESEARCH COMMUNICATIONS 1.9(2019).