干旱区生态环境知识资源中心(Arid): Sensitivity of dryland vegetation patterns to storm characteristics

Arid

DOI	10.1002/eco.2269
	Sensitivity of dryland vegetation patterns to storm characteristics
	Crompton, Octavia V.; Thompson, Sally E.
通讯作者	Crompton, OV (corresponding author), Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2021
卷号	14 期号:2
英文摘要	Ecohydrological phenomena are o ften multiscale in nature, with behavioTur that emerges from the interaction of tightly coupled systems having characteristic timescales that differ by orders of magnitude. Models address these differences using timescale separation methods, where each system is held in psuedo-steady state while the other evolves. When the computational demands of solving the 'fast' system are large, this strategy can become numerically intractable. Here, we use emulation modelling to accelerate the simulation of a computationally intensive 'fast' system: overland flow. We focus on dryland ecosystems in which storms generate overland flow, on timescales of 10(1 - 2) s. In these ecosystems, overland flow delivers crucial water inputs to vegetation, which grows and disperses 'slowly', on timescales of 10(7 - 9) s. Emulation allows for a physically realistic treatment of flow, advancing on phenomenological descriptions used in previous studies. Resolving the within-storm processes reveals novel dynamics, including new transition pathways from patchy vegetation to desertification, that are specifically controlled by storm processes.
英文关键词	arid ecosystems model emulation multiscale overland flow pattern formation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000606488800001
WOS关键词	SOIL-MOISTURE ; SELF-ORGANIZATION ; OVERLAND-FLOW ; RAINFALL ; OPTIMIZATION ; INFILTRATION ; EMULATION ; INTENSITY ; MODELS ; REDISTRIBUTION
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	University of California, Berkeley ; University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349980
作者单位	[Crompton, Octavia V.] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA; [Crompton, Octavia V.; Thompson, Sally E.] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA; [Thompson, Sally E.] Univ Western Australia, Dept Environm Engn, Perth, WA, Australia
推荐引用方式 GB/T 7714	Crompton, Octavia V.,Thompson, Sally E.. Sensitivity of dryland vegetation patterns to storm characteristics[J]. University of California, Berkeley, University of Western Australia,2021,14(2).
APA	Crompton, Octavia V.,&Thompson, Sally E..(2021).Sensitivity of dryland vegetation patterns to storm characteristics.ECOHYDROLOGY,14(2).
MLA	Crompton, Octavia V.,et al."Sensitivity of dryland vegetation patterns to storm characteristics".ECOHYDROLOGY 14.2(2021).