干旱区生态环境知识资源中心(Arid): Assessing the impacts of drought on net primary productivity of global land biomes in different climate zones

Arid

DOI	10.1016/j.ecolind.2021.108146
	Assessing the impacts of drought on net primary productivity of global land biomes in different climate zones
	Liu, Yangyang; Zhou, Ronglei; Wen, Zhongming; Khalifa, Muhammad; Zheng, Cheng; Ren, Hanyu; Zhang, Zhaoying; Wang, Zhenqian
通讯作者	Zhang, ZY (corresponding author), Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing 210023, Peoples R China. ; Wang, ZQ (corresponding author), Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China.
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2021
卷号	130
英文摘要	Drought is the most widespread event under climate change and is projected to lead to high uncertainties in quantifying the terrestrial carbon exchange. However, considering the complexity of drought quantification and the differences in the physiological responses to drought among different vegetation types, the potential mechanisms of vegetation in response to drought across different climate regions and their responses to drought at varying time scales remain unclear globally. Here, we analyzed the response of vegetation activity to drought at different time scales and determined the time scale dominating the drought-induced vegetation variations, then explored its potential driving factors (temperature, precipitation, potential evapotranspiration, and water balance) under different climatic conditions and vegetation types from 2000 to 2015 using the Standardized Precipitation Evapotranspiration Index (SPEI) and Net Primary Productivity (NPP). Our results indicated that the NPP-SPEI correlation was stronger under arid and semi-arid conditions compared to that in humid and subhumid zones globally. Vegetation mainly responded to the drought from short to medium time scales and the shortest response time scale was observed for deciduous needle-leaf forests and closed shrublands, which mainly located in semi-arid regions of southeastern Australia, central Africa, and southern Russia. Moreover, grassland and cropland ecosystems were found to be also highly vulnerable to drought across the globe. Analysis of the effects of various meteorological factors on NPP-SPEI correlation and drought timescales showed that water balance was the most predominant factor affecting the response of vegetation to drought. In particular, the increase in water balance significantly reduced the response intensity of vegetation to drought and prolonged the response timescales. Analysis of the effects of various meteorological factors on NPP-SPEI correlation and drought time-scales showed that water balance was the most predominant factor affecting the response of vegetation to drought. In particular, the increase in water balance significantly reduces the response intensity of vegetation to drought and prolongs the response time-scales. Therefore, the identification of the dominant timescales at which drought mostly impact land biomes is projected to assist assessing the stability of terrestrial ecosystem and thus support drought mitigation to reduce land degradation.
英文关键词	Drought Net primary productivity (NPP) Maximum Spearman correlation Climate zones Water balance
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:000693363200005
WOS关键词	CARBON USE EFFICIENCY ; VEGETATION ; GRASSLAND ; MORTALITY ; RESPONSES ; EVENTS ; CHINA ; INDEX
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	兰州大学 ; 西北农林科技大学 ; 南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362989
作者单位	[Liu, Yangyang; Zhou, Ronglei; Wen, Zhongming; Zheng, Cheng; Ren, Hanyu] Northwest A&F Univ, Coll Grassland Agr, Yangling 712100, Shaanxi, Peoples R China; [Khalifa, Muhammad] Cologne Univ Appl Sci, Inst Technol & Resources Management Trop & Subtro, D-50679 Cologne, Germany; [Zhang, Zhaoying] Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing 210023, Peoples R China; [Wang, Zhenqian] Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yangyang,Zhou, Ronglei,Wen, Zhongming,et al. Assessing the impacts of drought on net primary productivity of global land biomes in different climate zones[J]. 兰州大学, 西北农林科技大学, 南京大学,2021,130.
APA	Liu, Yangyang.,Zhou, Ronglei.,Wen, Zhongming.,Khalifa, Muhammad.,Zheng, Cheng.,...&Wang, Zhenqian.(2021).Assessing the impacts of drought on net primary productivity of global land biomes in different climate zones.ECOLOGICAL INDICATORS,130.
MLA	Liu, Yangyang,et al."Assessing the impacts of drought on net primary productivity of global land biomes in different climate zones".ECOLOGICAL INDICATORS 130(2021).