干旱区生态环境知识资源中心(Arid): Should time-lag and time-accumulation effects of climate be considered in attribution of vegetation dynamics? Case study of China's temperate grassland region

Arid

DOI	10.1007/s00484-023-02489-1
	Should time-lag and time-accumulation effects of climate be considered in attribution of vegetation dynamics? Case study of China's temperate grassland region
	Jin, Kai; Jin, Yansong; Wang, Fei; Zong, Quanli
通讯作者	Wang, F
来源期刊	INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
ISSN	0020-7128
EISSN	1432-1254
出版年	2023
卷号	67 期号:7 页码:1213-1223
英文摘要	Although the time-lag and time-accumulation effects (TLTAEs) of climatic factors on vegetation growth have been investigated extensively, the uncertainties caused by disregarding TLTAEs in the attribution analysis of long-term changes in vegetation remain unclear. This hinders our understanding of the associated changes in ecosystems and the effects of climate change. In this study, using multiple methods, we evaluate the biases of attribution analyses of vegetation dynamics caused by the non-consideration of TLTAEs in the temperate grassland region (TGR) of China from 2000 to 2019. Based on the datasets of the normalized difference vegetation index (NDVI), temperature (TMP), precipitation (PRE), and solar radiation (SR), the temporal reaction patterns of vegetation are analyzed, and the relationships among these variables under two scenarios (considering and disregarding TLTAEs) are compared. The results indicate that most areas of the TGR show a greening trend. A time-lag or time-accumulation effect of the three climatic variables is observed in most areas with significant spatial differences. The lagged times of the vegetation response to PRE are particularly prominent, with an average of 2.12 months in the TGR. When the TLTAE is considered, the areas where changes in the NDVI are affected by climatic factors expanded significantly, whereas the explanatory power of climate change on NDVI change increased by an average of 9.3% in the TGR; these improvements are more prominent in relatively arid areas. This study highlights the importance of including TLTAEs in the attribution of vegetation dynamics and the assessment of climatic effects on ecosystems.
英文关键词	Vegetation dynamics Climate change Time lag Time accumulation Attribution analyses Normalized difference vegetation index
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001008439100001
WOS关键词	NET PRIMARY PRODUCTION ; PRECIPITATION ; RESPONSES ; GROWTH ; VARIABILITY ; TREND
WOS类目	Biophysics ; Environmental Sciences ; Meteorology & Atmospheric Sciences ; Physiology
WOS研究方向	Biophysics ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Physiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396964
推荐引用方式 GB/T 7714	Jin, Kai,Jin, Yansong,Wang, Fei,et al. Should time-lag and time-accumulation effects of climate be considered in attribution of vegetation dynamics? Case study of China's temperate grassland region[J],2023,67(7):1213-1223.
APA	Jin, Kai,Jin, Yansong,Wang, Fei,&Zong, Quanli.(2023).Should time-lag and time-accumulation effects of climate be considered in attribution of vegetation dynamics? Case study of China's temperate grassland region.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,67(7),1213-1223.
MLA	Jin, Kai,et al."Should time-lag and time-accumulation effects of climate be considered in attribution of vegetation dynamics? Case study of China's temperate grassland region".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 67.7(2023):1213-1223.