DOI: 10.1111/gcb.12286
论文题名: Soil moisture's underestimated role in climate change impact modelling in low-energy systems
作者: Le Roux P.C. ; Aalto J. ; Luoto M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 10 起始页码: 2965
结束页码: 2975
语种: 英语
英文关键词: Arctic-alpine
; Community composition
; Soil wetness
; Species distribution models
; Species richness
; Topographic wetness index
Scopus关键词: arctic environment
; climate change
; climate conditions
; climate effect
; community composition
; precipitation (climatology)
; soil biota
; soil moisture
; soil water
; species richness
; temperature anomaly
; topographic effect
; Arctic
; water
; arctic-alpine
; article
; biodiversity
; chemistry
; climate change
; community composition
; Finland
; plant
; soil
; soil wetness
; species distribution models
; species richness
; theoretical model
; topographic wetness index
; arctic-alpine
; community composition
; soil wetness
; species distribution models
; species richness
; topographic wetness index
; Biodiversity
; Climate Change
; Finland
; Models, Theoretical
; Plants
; Soil
; Water
英文摘要: Shifts in precipitation regimes are an inherent component of climate change, but in low-energy systems are often assumed to be less important than changes in temperature. Because soil moisture is the hydrological variable most proximally linked to plant performance during the growing season in arctic-alpine habitats, it may offer the most useful perspective on the influence of changes in precipitation on vegetation. Here we quantify the influence of soil moisture for multiple vegetation properties at fine spatial scales, to determine the potential importance of soil moisture under changing climatic conditions. A fine-scale data set, comprising vascular species cover and field-quantified ecologically relevant environmental parameters, was analysed to determine the influence of soil moisture relative to other key abiotic predictors. Soil moisture was strongly related to community composition, species richness and the occurrence patterns of individual species, having a similar or greater influence than soil temperature, pH and solar radiation. Soil moisture varied considerably over short distances, and this fine-scale heterogeneity may contribute to offsetting the ecological impacts of changes in precipitation for species not limited to extreme soil moisture conditions. In conclusion, soil moisture is a key driver of vegetation properties, both at the species and community level, even in this low-energy system. Soil moisture conditions represent an important mechanism through which changing climatic conditions impact vegetation, and advancing our predictive capability will therefore require a better understanding of how soil moisture mediates the effects of climate change on biota. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62336
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Geosciences and Geography, University of Helsinki, Helsinki, FI-00014, Finland
Recommended Citation:
Le Roux P.C.,Aalto J.,Luoto M.. Soil moisture's underestimated role in climate change impact modelling in low-energy systems[J]. Global Change Biology,2013-01-01,19(10)