干旱区生态环境知识资源中心(Arid): Patterns of post-drought recovery are strongly influenced by drought duration, frequency, post-drought wetness, and bioclimatic setting

Arid

DOI	10.1111/gcb.15788
	Patterns of post-drought recovery are strongly influenced by drought duration, frequency, post-drought wetness, and bioclimatic setting
	Jiao, Tong; Williams, Christopher A.; De Kauwe, Martin G.; Schwalm, Christopher R.; Medlyn, Belinda E.
通讯作者	Jiao, T (corresponding author), Clark Univ, Grad Sch Geog, Worcester, MA 01610 USA.
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2021
卷号	27 期号:19 页码:4630-4643
英文摘要	Understanding vegetation recovery after drought is critical for projecting vegetation dynamics in future climates. From 1997 to 2009, Australia experienced a long-lasting drought known as the Millennium Drought (MD), which led to widespread reductions in vegetation productivity. However, vegetation recovery post-drought and its determinants remain unclear. This study leverages remote sensing products from different sources-fraction of absorbed photosynthetically active radiation (FPAR), based on optical data, and canopy density, derived from microwave data-and random forest algorithms to assess drought recovery over Australian natural vegetation during a 20-year period centered on the MD. Post-drought recovery was prevalent across the continent, with 6 out of 10 drought events seeing full recovery within about 6 months. Canopy density was slower to recover than leaf area seen in FPAR. The probability of full recovery was most strongly controlled by drought return interval, post-drought hydrological condition, and drought length. Full recovery was seldom observed when drought events occurred at intervals of 3 months or less, and moderately dry (standardized water balance anomaly [SWBA] within [-1, -0.76]) post-drought conditions resulted in less complete recovery than wet (SWBA > 0.3) post-drought conditions. Press droughts, which are long term but not extreme, delayed recovery more than pulse droughts (short term but extreme) and led to a higher frequency of persistent decline. Following press droughts, the frequency of persistent decline differed little among biome types but peaked in semi-arid regions across aridity levels. Forests and savanna required the longest recovery times for press drought, while grasslands were the slowest to recover for pulse drought. This study provides quantitative thresholds that could be used to improve the modeling of ecosystem dynamics post-drought.
英文关键词	Australian natural vegetation Millennium Drought post-drought recovery pulse droughts and press droughts random forest classification vegetation optical depth
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000673833900001
WOS关键词	VEGETATION OPTICAL DEPTH ; LEAF-AREA INDEX ; SEMIARID ECOSYSTEMS ; TREE MORTALITY ; CARBON UPTAKE ; W TEST ; REDUCTION ; RADIATION ; HEAT ; PRODUCTIVITY
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363454
作者单位	[Jiao, Tong; Williams, Christopher A.] Clark Univ, Grad Sch Geog, Worcester, MA 01610 USA; [De Kauwe, Martin G.] Univ New South Wales, ARC Ctr Excellence Climate Extremes, Sydney, NSW, Australia; [De Kauwe, Martin G.] Univ New South Wales, Climate Change Res Ctr, Sydney, NSW, Australia; [De Kauwe, Martin G.] Univ New South Wales, Evolut Ecol Res Ctr, Sydney, NSW, Australia; [Schwalm, Christopher R.] Woodwell Climate Res Ctr, Falmouth, MA USA; [Medlyn, Belinda E.] Univ Western Sydney, Hawkesbury Inst Environm, Penrith, NSW, Australia
推荐引用方式 GB/T 7714	Jiao, Tong,Williams, Christopher A.,De Kauwe, Martin G.,et al. Patterns of post-drought recovery are strongly influenced by drought duration, frequency, post-drought wetness, and bioclimatic setting[J],2021,27(19):4630-4643.
APA	Jiao, Tong,Williams, Christopher A.,De Kauwe, Martin G.,Schwalm, Christopher R.,&Medlyn, Belinda E..(2021).Patterns of post-drought recovery are strongly influenced by drought duration, frequency, post-drought wetness, and bioclimatic setting.GLOBAL CHANGE BIOLOGY,27(19),4630-4643.
MLA	Jiao, Tong,et al."Patterns of post-drought recovery are strongly influenced by drought duration, frequency, post-drought wetness, and bioclimatic setting".GLOBAL CHANGE BIOLOGY 27.19(2021):4630-4643.