干旱区生态环境知识资源中心(Arid): Connectivity Dynamics in Dryland Litter Cycles: Moving Decomposition beyond Spatial Stasis

Arid

DOI	10.1093/biosci/biz061
	Connectivity Dynamics in Dryland Litter Cycles: Moving Decomposition beyond Spatial Stasis
	Throop, Heather L.1,2; Belnap, Jayne3
通讯作者	Throop, Heather L.
来源期刊	BIOSCIENCE
ISSN	0006-3568
EISSN	1525-3244
出版年	2019
卷号	69 期号:8 页码:602-614
英文摘要	Drylands (arid and semiarid ecosystems) cover nearly half of Earth's terrestrial surface, but biogeochemical pools and processes in these systems remain poorly understood. Litter can account for a substantial portion of carbon and nutrient pools in these systems, with litter decomposition exerting important controls over biogeochemical cycling. Dryland decomposition is typically treated as a spatially static process in which litter is retained and decomposed where it is initially deposited. Although this assumption is reasonable for mesic systems with continuous plant canopy cover and a stable subcanopy litter layer, dryland pools generally reflect discontinuous inputs from heterogeneous canopy cover followed by substantial litter transport. In the present article, we review horizontal and vertical transport processes that move litter from the initial deposition point and retention elements that influence litter accumulation patterns. Appreciation of the spatially dynamic litter cycle, including quantitative assessment of transport patterns, will improve estimates of the fate and distribution of organic matter in current and future drylands.
英文关键词	arid organic matter semiarid wind and water transport retention elements
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000481419100006
WOS关键词	ORGANIC-CARBON ; SOIL CARBON ; LEAF-LITTER ; TEMPORAL-CHANGES ; WATER EROSION ; WIND EROSION ; NEW-MEXICO ; DESERT ; TRANSPORT ; ENCROACHMENT
WOS类目	Biology
WOS研究方向	Life Sciences & Biomedicine - Other Topics
来源机构	United States Geological Survey ; Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214665
作者单位	1.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85281 USA; 2.Arizona State Univ, Sch Life Sci, Tempe, AZ 85281 USA; 3.US Geol Survey, Southwest Biol Sci Ctr, Moab, UT USA
推荐引用方式 GB/T 7714	Throop, Heather L.,Belnap, Jayne. Connectivity Dynamics in Dryland Litter Cycles: Moving Decomposition beyond Spatial Stasis[J]. United States Geological Survey, Arizona State University,2019,69(8):602-614.
APA	Throop, Heather L.,&Belnap, Jayne.(2019).Connectivity Dynamics in Dryland Litter Cycles: Moving Decomposition beyond Spatial Stasis.BIOSCIENCE,69(8),602-614.
MLA	Throop, Heather L.,et al."Connectivity Dynamics in Dryland Litter Cycles: Moving Decomposition beyond Spatial Stasis".BIOSCIENCE 69.8(2019):602-614.