DOI: 10.1016/j.foreco.2016.09.006
Scopus记录号: 2-s2.0-84987920153
论文题名: Calculating carbon changes in peat soils drained for forestry with four different profile-based methods
作者: Krüger J.P. ; Alewell C. ; Minkkinen K. ; Szidat S. ; Leifeld J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 381 起始页码: 29
结束页码: 36
语种: 英语
英文关键词: Boreal peatland
; Carbon balance
; Drainage
; Profile-based methods
; Soil carbon
; Stable carbon isotopes
Scopus关键词: Forestry
; Isotopes
; Soils
; Timber
; Wetlands
; Boreal peatlands
; Carbon balance
; Profile-based methods
; Soil carbon
; Stable carbon isotopes
; Drainage
; Boreal Kingdom
; carbon balance
; carbon isotope
; carbon sink
; drainage
; forestry
; numerical method
; nutrient cycling
; peat soil
; peatland
; qualitative analysis
; soil carbon
; stable isotope
; Finland
; Lakkasuo Mire
; Pirkanmaa
英文摘要: Boreal peatlands are an important carbon (C) sink. The effect of drainage for forestry on the soil C balance in those peatlands is a controversial debate. The Lakkasuo peatland, central Finland, comprise a minerotrophic and an ombrotrophic part, both partially drained for forestry. A pair-wise comparison was conducted and four different profile-based methods were applied to calculate the soil C balance. The first two methods used differences in ash content (I) between the upper and lower part of the profile and (II) between the drained and natural site of the peatland, respectively. The third method (III) used radiocarbon dated samples to calculate C accumulation rates at the natural site and compared these to the current C-stocks at the drained sites. The fourth method (IV) used radiocarbon dated samples to define a 1000-year layer in the profiles for comparing the C-stocks above this layer. Stable carbon isotope depth profiles, used for a qualitative assessment of the peatland status, identify both undrained site as undisturbed. All four methods indicate a C loss at the minerotrophic drained site but of different magnitude (0.057–0.272 kg C m−2 yr−1). At the ombrotrophic drained site both radiocarbon methods (III and IV) indicate a C gain (0.139–0.179 kg C m−2 yr−1) whereas methods I and II suggest a C loss (0.084–0.270 kg C m−2 yr−1). Method IV is considered the most stringent and robust one. Yet, the comparison of profile-based methods for C balance assessment suggests them to be applicable depending on site-specific conditions of nutrient status and presence of a natural reference site. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64666
Appears in Collections: 影响、适应和脆弱性
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作者单位: aEnvironmental Geosciences, University of Basel, Bernoullistrasse 30, Basel, Switzerland; Department of Forest Science, University of Helsinki, P.O. Box 27, Helsinki, Finland; Department of Chemistry and Biochemistry & Oeschger Centre for Climate Change Research, University of Bern, Freiestrasse 3, Bern, Switzerland; Climate/Air Pollution Group, Agroscope, Reckenholzstrasse 191, Zürich, Switzerland
Recommended Citation:
Krüger J.P.,Alewell C.,Minkkinen K.,et al. Calculating carbon changes in peat soils drained for forestry with four different profile-based methods[J]. Forest Ecology and Management,2016-01-01,381