Arid
DOI10.1016/j.geoderma.2016.01.030
Controls on ecohydrologic properties in desert ecosystems: Differences in soil age and volcanic morphology
Beal, Lakin K.1; Huber, David P.2; Godsey, Sarah E.1; Nawotniak, Shannon K.1; Lohse, Kathleen A.1,2
通讯作者Lohse, Kathleen A.
来源期刊GEODERMA
ISSN0016-7061
EISSN1872-6259
出版年2016
卷号271页码:32-41
英文摘要

Research examining the influence of parent material on soil and landscape development is limited in dryland environments. In volcanic soils, most studies examining soil development and succession have been conducted in humid environments, where weathering occurs rapidly. This study was conducted in a semi-arid environment to examine the influence of volcanic parent material morphology on soil development and ecohydrologic properties that may regulate primary succession. Four study sites were selected across young (similar to 2.0 ka) and old (similar to 12.1 ka) end members of two different parent materials (cinder cones and pahoehoe lava flows). We hypothesized that soils and associated hydraulic properties would evolve more rapidly on the cinder cones compared to the pahoehoe flows owing to greater surface area on the cinder. For each site, we quantified plant cover, soil organic matter, bulk density, texture, soil water retention, and hydraulic conductivity. The old cinder cone soils accumulated approximately 9% soil organic matter and increased in silt plus clay fraction by 23% relative to the young soil. This increased water retention and decreased hydraulic conductivity. Similarly, plant cover increased by 47%. The old pahoehoe site remained dominated by unweathered basalt, where silty eolian material accumulated preferentially in crevices. Soil organic matter and silt plus clay fraction increased by 18% and 49% respectively in old pahoehoe soils, resulting in increased water retention but little change in hydraulic conductivity. Plants were restricted to crevices and cover increased by only 34%. We observed the cinder cone sites had extensive soil and plant community development from the young to old sites. The pahoehoe soils and plant communities established earlier than on cinder cones, but showed only modest functional changes between young and old sites. The combined characterization of soil development, hydraulic properties, and plant community dynamics highlights potential ecohydrologic mechanisms controlling successional processes in young semi-arid landscapes. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Semiarid Succession Landscape and ecosystem co-evolution Soil moisture retention Ecohydrology Soil development
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000373541800005
WOS关键词MOJAVE DESERT ; HYDROLOGIC CHARACTERIZATION ; HYDRAULIC-PROPERTIES ; SEMIARID ECOSYSTEMS ; VARYING DEGREES ; LAVA FLOWS ; CHRONOSEQUENCE ; NITROGEN ; DUST ; COMMUNITIES
WOS类目Soil Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/193190
作者单位1.Idaho State Univ, Dept Geosci, 921 S 8th Ave,STOP 8072, Pocatello, ID 83209 USA;
2.Idaho State Univ, Dept Biol Sci, 921 S 8th Ave,STOP 8072, Pocatello, ID 83209 USA
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GB/T 7714
Beal, Lakin K.,Huber, David P.,Godsey, Sarah E.,et al. Controls on ecohydrologic properties in desert ecosystems: Differences in soil age and volcanic morphology[J],2016,271:32-41.
APA Beal, Lakin K.,Huber, David P.,Godsey, Sarah E.,Nawotniak, Shannon K.,&Lohse, Kathleen A..(2016).Controls on ecohydrologic properties in desert ecosystems: Differences in soil age and volcanic morphology.GEODERMA,271,32-41.
MLA Beal, Lakin K.,et al."Controls on ecohydrologic properties in desert ecosystems: Differences in soil age and volcanic morphology".GEODERMA 271(2016):32-41.
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