Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2016.02.014 |
Leaf litter decomposition is rapidly enhanced by the co-occurrence of monsoon rainfall and soil-litter mixing across a gradient of coppice dune development in the Chihuahuan Desert | |
Hewins, Daniel B.1,2; Throop, Heather L.1,3,4 | |
通讯作者 | Hewins, Daniel B. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS |
ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2016 |
卷号 | 129页码:111-118 |
英文摘要 | Shrub encroachment, a common occurrence in drylands over the past 150 years, has the potential to alter the redistribution of soil and soil resources by wind and water. This may affect decomposition via soil litter mixing (SLM). SLM can accelerate decomposition, but its contributions and relationship with abiotic controls, particularly in the context of shrub encroachment, are unknown. To better understand the spatiotemporal relationships between decomposition and shrub encroachment, we conducted a 24 month decomposition study aimed at understanding how placement of litter on either up or downwind sides of dunes in association dune volume affected litter decomposition. There was little decomposition in the first six months of the experiment, with 97.2% of mass remaining despite high exposure to solar radiation. Decay occurred in synchrony with monsoons and SLM, suggesting precipitation during the monsoon season plays an important role in facilitating both SLM and decomposition. Litter placements across a gradient of shrub volumes had no effect on decomposition rates and SLM, but litter placement on the downwind side of dunes had a positive influence on soil-microbial film development. Ultimately, monsoons rainfall and SLM promoted decomposition across a gradient of shrub encroachment in this dryland ecosystem. (C) 2016 Elsevier Ltd. All rights reserved. |
英文关键词 | Carbon cycling Shrub encroachment Biogeochemical cycling Prosopis Nutrient cycling Photodegradation |
类型 | Article |
语种 | 英语 |
国家 | USA ; Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000376806900013 |
WOS关键词 | NEW-MEXICO ; RADIATION ; PATTERNS ; NITROGEN ; CLIMATE ; GRASSLANDS ; SHRUBLAND ; CHEMISTRY ; DYNAMICS ; RELEASE |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | Arizona State University ; New Mexico State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/194122 |
作者单位 | 1.New Mexico State Univ, Dept Biol, MSC 3AF, Las Cruces, NM 88003 USA; 2.Univ Alberta, Dept Agr Food & Nutr Sci, Agr Forestry Ctr 4 10, Edmonton, AB T6P 2G5, Canada; 3.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA; 4.Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA |
推荐引用方式 GB/T 7714 | Hewins, Daniel B.,Throop, Heather L.. Leaf litter decomposition is rapidly enhanced by the co-occurrence of monsoon rainfall and soil-litter mixing across a gradient of coppice dune development in the Chihuahuan Desert[J]. Arizona State University, New Mexico State University,2016,129:111-118. |
APA | Hewins, Daniel B.,&Throop, Heather L..(2016).Leaf litter decomposition is rapidly enhanced by the co-occurrence of monsoon rainfall and soil-litter mixing across a gradient of coppice dune development in the Chihuahuan Desert.JOURNAL OF ARID ENVIRONMENTS,129,111-118. |
MLA | Hewins, Daniel B.,et al."Leaf litter decomposition is rapidly enhanced by the co-occurrence of monsoon rainfall and soil-litter mixing across a gradient of coppice dune development in the Chihuahuan Desert".JOURNAL OF ARID ENVIRONMENTS 129(2016):111-118. |
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