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DOI	10.1111/geb.12858
	To what extent is drought-induced tree mortality a natural phenomenon?
	Fensham, Roderick J.1,2; Laffineur, Boris 1,2; Allen, Craig D.3
通讯作者	Fensham, Roderick J.
来源期刊	GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN	1466-822X
EISSN	1466-8238
出版年	2019
卷号	28 期号:3 页码:365-373
英文摘要	Aim Catastrophic forest mortality due to more extreme rainfall deficits and higher temperatures under future climate scenarios has been predicted. The aim of this study is to explore the magnitude of historical drought-induced tree mortality under pre-warming conditions. Location North-eastern Australia. Time period 1845-2017. Major taxa studied Trees. Methods Field survey, historical analysis and climate analysis. Results We present evidence of 18%-30% tree mortality from recent droughts across three regions of north-eastern Australia with rainfall deficits less severe than earlier historical droughts. The corrected temperature record represents modest warming at the stations with long records in the vicinity of the study areas. In terms of rainfall deficit the most severe drought on record occurred in the early 20th century, and historical evidence confirms that this drought and earlier droughts before the advent of pastoralism coincided with substantial tree mortality. Main conclusions Dramatic declines in woody biomass in response to drought historically occurred more than once a century and are a natural phenomenon in semi-arid Australia. The magnitude of drought-induced tree mortality under natural climate fluctuations requires further investigation in other continents. Widespread drought-induced tree mortality is not just a recent global change phenomenon and has been underestimated as a natural ecological process. However, even more severe forest die-off events from more extreme hotter droughts are predicted if Earth's warming proceeds as currently projected.
英文关键词	Australia climate change drought forest mortality savanna tree mortality
类型	Article
语种	英语
国家	Australia ; USA
收录类别	SCI-E
WOS记录号	WOS:000458404200007
WOS关键词	TEMPERATURE ; WOODLAND ; FIRE ; RAINFALL ; BIOMASS
WOS类目	Ecology ; Geography, Physical
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216092
作者单位	1.Queensland Herbarium, Mt Coot Tha Rd, Toowong, Qld 4066, Australia; 2.Univ Queensland, Dept Biol Sci, St Lucia, Qld, Australia; 3.US Geol Survey, Landscapes Field Stn, Los Alamos, NM USA
推荐引用方式 GB/T 7714	Fensham, Roderick J.,Laffineur, Boris,Allen, Craig D.. To what extent is drought-induced tree mortality a natural phenomenon?[J]. United States Geological Survey,2019,28(3):365-373.
APA	Fensham, Roderick J.,Laffineur, Boris,&Allen, Craig D..(2019).To what extent is drought-induced tree mortality a natural phenomenon?.GLOBAL ECOLOGY AND BIOGEOGRAPHY,28(3),365-373.
MLA	Fensham, Roderick J.,et al."To what extent is drought-induced tree mortality a natural phenomenon?".GLOBAL ECOLOGY AND BIOGEOGRAPHY 28.3(2019):365-373.