DOI: 10.1016/j.foreco.2016.03.003
Scopus记录号: 2-s2.0-84960104174
论文题名: Contribution of Acacia senegal to biomass and soil carbon in plantations of varying age in Sudan
作者: Abaker W.E. ; Berninger F. ; Saiz G. ; Braojos V. ; Starr M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 368 起始页码: 71
结束页码: 80
语种: 英语
英文关键词: Carbon isotopes
; Carbon sequestration
; Drylands
; Land degradation
; Sahel
; Semi-arid
; Woodland savanna
Scopus关键词: Biomass
; Forestry
; Soils
; Vegetation
; Carbon isotopes
; Carbon sequestration
; Dry land
; Land degradation
; Sahel
; Semi arid
; Woodland savanna
; Organic carbon
; biomass
; carbon isotope
; carbon sequestration
; deciduous tree
; land degradation
; land type
; plantation
; savanna
; semiarid region
; soil carbon
; soil fertility
; Sahel [Sub-Saharan Africa]
; Sudan
; Acacia
; Acacia senegal
英文摘要: The carbon (C) stocks of drylands, particularly in Africa, have become considerably depleted through land degradation leading to loss of soil fertility and water retention. Increasing tree cover is considered a practical means of increasing soil organic carbon (SOC) contents. However, few field studies have been carried out in the eastern part of the Sahel zone to test this hypothesis. In this study the C stocks in biomass and soil were determined in Acacia senegal plantations of varying age (7-24 years) and adjacent open grasslands in two locations in Sudan. The contribution of C3 plants to SOC was estimated using a simple δ13C partitioning model. Total biomass C stocks increased with plantation age, reaching 1020 g m- 2. While most of this increase was due to the trees, the C stock of the ground vegetation also increased with plantation age and was greater in the oldest plantations than in the open grassland. This finding supports the hypothesis that trees facilitate ground vegetation in semi-arid environments. Plantation SOC stocks (0-50 cm) ranged from 846 to 1250 g m- 2, increased with age and were greater than open grassland values (867-950 g m- 2). The contribution of C3 plants (trees and herbs) to plantation under canopies SOC stocks (0-10 cm) was 47.2% and 53.4% at the two sites. SOC sequestration rates up to 19 g C m- 2 yr- 1 were achieved in the oldest plantations at one of the sites. Our findings indicate that planting trees in drylands could considerably increase SOC stocks and efforts to plant Acacia trees in the Sahel should therefore be encouraged. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64986
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Sciences, Viikki Tropical Resources Institute (VITRI), University of Helsinki, P.O. Box 27, Helsinki, Finland; Faculty of Forestry, University of Khartoum, Shambat, Sudan; Department of Forest Sciences, University of Helsinki, P.O. Box 27, Helsinki, Finland; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany
Recommended Citation:
Abaker W.E.,Berninger F.,Saiz G.,et al. Contribution of Acacia senegal to biomass and soil carbon in plantations of varying age in Sudan[J]. Forest Ecology and Management,2016-01-01,368