干旱区生态环境知识资源中心(Arid): Inter-annual Climate Variability and Vegetation Dynamic in the Upper Amur (Heilongjiang) River Basin in Northeast Asia

Arid

DOI	10.1088/2515-7620/ab9525
	Inter-annual Climate Variability and Vegetation Dynamic in the Upper Amur (Heilongjiang) River Basin in Northeast Asia
	You, Guangyong; Arain, M. Altaf; Wang, Shusen; McKenzie, Shawn; Xu, Bing; He, Yaqian; Wu, Dan; Lin, Naifeng; Gao, Jixi; Jia, Xiru
通讯作者	Gao, JX
来源期刊	ENVIRONMENTAL RESEARCH COMMUNICATIONS
ISSN	2515-7620
出版年	2020
卷号	2 期号:6
英文摘要	Long-term (1982-2013) datasets of climate variables and Normalized Difference Vegetation Index (NDVI) were collected from Climate Research Union (CRU) and GIMMS NDVI3g. By setting the NDVI values below the threshold of 0.2 as 0, NDVI_0.2 was created to eliminate the noise caused by changes of surface albedo during non-growing period. TimeSat was employed to estimate the growing season length (GSL) from the seasonal variation of NDVI. Statistical analyses were conducted to reveal the mechanisms of climate-vegetation interactions in the cold and semi-arid Upper Amur River Basin of Northeast Asia. The results showed that the regional climate change can be summarized as warming and drying. Annual mean air temperature (T) increased at a rate of 0.13 degrees C per decade. Annual precipitation (P) declined at a rate of 18.22 mm per decade. NDVI had an insignificantly negative trend, whereas, NDVI_0.2 displayed a significantly positive trend (MK test, p < 0.05) over the past three decades. GSL had a significantly positive rate of approximately 2.9 days per decade. Correlation analysis revealed that, NDVI was significantly correlated with amount of P, whereas, GSL was highly correlated with warmth index (WMI), accumulation of monthly T above the threshold of 5 degrees C. Principal regression analysis revealed that the inter-annual variations of NDVI, NDVI_0.2 and GSL were mostly contributed by WMI. Spatially, NDVI in grassland was more sensitive to P, whereas, T was more important in areas of high elevation. GSL in most of the areas displayed high sensitivity to T. This study examined the different roles of climate variables in controlling the vegetation activities. Further studies are needed to reveal the impact of extended GSL on the regional water balance and the water level of regional lakes, providing the habitats for the migratory birds and endangered species.
英文关键词	climate change vegetation response NDVI variability growing season length Amur River
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:000579512200003
WOS关键词	NDVI TIME-SERIES ; INNER-MONGOLIA ; EL-NINO ; GRASSLAND VEGETATION ; SOIL-MOISTURE ; INDEX NDVI ; DATA SET ; PHENOLOGY ; RESPONSES ; TRENDS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326872
作者单位	[You, Guangyong; Wu, Dan; Lin, Naifeng; Gao, Jixi] Nanjing Inst Environm Sci, Minist Ecol & Environm, Nanjing 210042, Jiangsu, Peoples R China; [You, Guangyong; Arain, M. Altaf; McKenzie, Shawn; Xu, Bing] McMaster Univ, Sch Geog & Earth Sci, Hamilton, ON L8S 4K1, Canada; [You, Guangyong; Arain, M. Altaf; McKenzie, Shawn; Xu, Bing] 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; [He, Yaqian] West Virginia Univ, Dept Geol & Geog, Morgantown, WV 26506 USA; [Jia, Xiru] Renmin Univ China, Sch Environm Nat Resources, Beijing 100872, Peoples R China
推荐引用方式 GB/T 7714	You, Guangyong,Arain, M. Altaf,Wang, Shusen,et al. Inter-annual Climate Variability and Vegetation Dynamic in the Upper Amur (Heilongjiang) River Basin in Northeast Asia[J],2020,2(6).
APA	You, Guangyong.,Arain, M. Altaf.,Wang, Shusen.,McKenzie, Shawn.,Xu, Bing.,...&Jia, Xiru.(2020).Inter-annual Climate Variability and Vegetation Dynamic in the Upper Amur (Heilongjiang) River Basin in Northeast Asia.ENVIRONMENTAL RESEARCH COMMUNICATIONS,2(6).
MLA	You, Guangyong,et al."Inter-annual Climate Variability and Vegetation Dynamic in the Upper Amur (Heilongjiang) River Basin in Northeast Asia".ENVIRONMENTAL RESEARCH COMMUNICATIONS 2.6(2020).