DOI: 10.1016/j.foreco.2014.05.031
Scopus记录号: 2-s2.0-84902279859
论文题名: Trees increase soil carbon and its stability in three agroforestry systems in central Alberta, Canada
作者: Baah-Acheamfour M. ; Carlyle C.N. ; Bork E.W. ; Chang S.X.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 328 起始页码: 131
结束页码: 139
语种: 英语
英文关键词: Hedgerow
; Nitrogen
; Physical fractionation
; Shelterbelt
; Silvopasture
Scopus关键词: Carbon
; Greenhouse gases
; Nitrogen
; Soils
; Wooden fences
; Agricultural landscapes
; Agroforestry system
; Atmospheric greenhouse
; Hedgerow
; Particle-size fractions
; Physical fractionation
; Shelterbelt
; Silvopasture
; Forestry
; agroforestry
; anthropogenic effect
; carbon sequestration
; land use planning
; particle size
; soil carbon
; tree
; Carbon
; Forestry
; Greenhouse Gases
; Nitrogen
; Soil
; Alberta
; Canada
英文摘要: Agroforestry land-use systems have significant potential for increasing soil carbon (C) storage and mitigating increases in atmospheric greenhouse gas (GHG) concentrations. We studied the impact of three agroforestry systems (hedgerow, shelterbelt, and silvopasture) on soil organic C (SOC) and nitrogen (N) in the 0-10cm mineral layer, by comparing SOC and N distributions in whole soils and three particle-size fractions (<53, 53-250, 250-2000μm) to assess the potential role of physical protection on soil C and N storage. We assessed thirty-five sites (12 hedgerows, 11 shelterbelts and 12 silvopastures), each comprised of 2 paired plots (forest and adjacent agricultural herbland), that were distributed along a 270km long north-south soil/climate gradient in central Alberta, Canada. Across all sites, 48.4%, 28.5%, and 23.1% of SOC was found in the fine (<53μm), medium (53-250μm) and coarse fractions (250-2000μm), respectively. Mean SOC in the whole soil was 62.5, 47.7 and 81.3gkg-1 in hedgerow, shelterbelt and silvopasture systems, respectively. Soil C in the more stable fine fraction was 34.3, 28.8 and 29.3gkg-1 in the hedgerow, shelterbelt and silvopasture systems, respectively. Within each agroforestry system, the forested land-use consistently had greater total SOC and SOC in all size fractions than the agricultural component. Our results demonstrate the potential for trees to increase soil C sequestration in agroforestry systems within the agricultural landscape. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65865
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Renewable Resources, University of Alberta, 442 Earth Science Building, Edmonton, AB T6G 2E3, Canada; Department of Agricultural, Food and Nutritional Science, University of Alberta, 410 Agriculture/Forestry Centre, Edmonton, AB T6G 2H1, Canada
Recommended Citation:
Baah-Acheamfour M.,Carlyle C.N.,Bork E.W.,et al. Trees increase soil carbon and its stability in three agroforestry systems in central Alberta, Canada[J]. Forest Ecology and Management,2014-01-01,328