Effect of stand age on greenhouse gas fluxes from a Sitka spruce [ Picea sitchensis (Bong.) Carr.] chronosequence on a peaty gley soil
作者: TOM BALLKEITH A. SMITHJOHN B. MONCRIEFF
作者单位: 1School of GeoSciences, University of Edinburgh, Crew Building, West Mains Rd, Edinburgh EH9 3JN, UK
刊名: Global Change Biology, 2007, Vol.13 (10), pp.2128-2142
来源数据库: Wiley Journal
DOI: 10.1111/j.1365-2486.2007.01427.x
关键词: carbon dioxidemethanenet ecosystem exchangenitrous oxidepeaty gleySitka sprucesoil temperaturesoil volumetric moisturewater table
原始语种摘要: Abstract(#br)The influence of forest stand age in a Picea sitchensis plantation on (1) soil fluxes of three greenhouse gases (GHGs – CO2, CH4 and N2O) and (2) overall net ecosystem global warming potential (GWP), was investigated in a 2‐year study. The objective was to isolate the effect of forest stand age on soil edaphic characteristics (temperature, water table and volumetric moisture) and the consequent influence of these characteristics on the GHG fluxes. Fluxes were measured in a chronosequence in Harwood, England, with sites comprising 30‐ and 20‐year‐old second rotation forest and a site clearfelled (CF) some 18 months before measurement. Adjoining unforested grassland (UN) acted as a control. Comparisons were made between flux data, soil...
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