DOI: 10.1175/JCLI-D-11-00440.1
Scopus记录号: 2-s2.0-84864818612
论文题名: Projections of future soil temperature and water content for three Southern Quebec forested sites
作者: Houle D. ; Bouffard A. ; Duchesne L. ; Logan T. ; Harvey R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 21 起始页码: 7690
结束页码: 7701
语种: 英语
Scopus关键词: Biogeochemical cycle
; Black spruce
; Forest sites
; Forest soils
; Forested sites
; Future climate
; Global climate model
; Growing season
; Model performance
; Northern forests
; Significant impacts
; Snowmelt
; Soil conditions
; Soil temperature
; Water budget
; Climate change
; Climate models
; Soil moisture
; Temperature
; Water supply
; Forestry
; biogeochemical cycle
; climate change
; climate modeling
; forest cover
; performance assessment
; seasonal variation
; soil moisture
; soil temperature
; water content
; Budgeting
; Climates
; Forestry
; Models
; Moisture
; Soil
; Temperature
; Water
; Water Supply
; Canada
; Quebec [Canada]
; Picea mariana
英文摘要: The impacts of climate change on future soil temperature Ts and soil moisture Ms of northern forests are uncertain. In this study, the authors first calibrated Ts and Ms models [Forest Soil Temperature Model (ForSTeM) and Forest HydrologyModel (ForHyM), respectively] using long-term observations of Ts andMs at different depths measured at three forest sites in eastern Canada. The two models were then used to project Ts andMs for the period 1971-2100 using historical and future climate scenarios generated by one regional and five global climate models. Results indicate good model performance by ForSTeM and ForHyM in predicting observed Ts and Ms values at various depths for the three sites. Projected annual-mean Ts at these sites increased between 1.1° and 1.9°C and between 1.9° and 3.3°C from the present 30-yr averages (1971-2000) to the periods 2040-69 and 2070-99, respectively. Increases as high as 5.0°C were projected at the black spruce site during the growing season (June) for the period 2070-99. Changes in annual-mean Ms were relatively small; however, seasonally Ms is projected to increase in April, because of earlier snowmelt, and to decrease during the growing season, mainly because of higher evapotranspiration rates. Soil moisture in the growing season could be reduced by 20%-40% for the period 2070-99 compared to the reference period. The projected warmer and drier soil conditions in the growing season could have significant impacts on forests growth and biogeochemical cycles. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52154
Appears in Collections: 气候变化事实与影响
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作者单位: Direction de la Recherche Forestiere du Ministere des Ressources Naturelles et de la Faune du Quebec, Quebec City, QC, Canada; Ouranos, Montreal, QC, Canada; Centre for Climate Modelling and Analysis, Environment Canada, Montreal, QC, Canada
Recommended Citation:
Houle D.,Bouffard A.,Duchesne L.,et al. Projections of future soil temperature and water content for three Southern Quebec forested sites[J]. Journal of Climate,2012-01-01,25(21)