DOI: 10.1016/j.foreco.2017.05.049
Scopus记录号: 2-s2.0-85020424797
论文题名: Annual biomass increment of Xerophytic thickets and sustainability of woody charcoal production in southwestern Madagascar
作者: Randriamalala J.R. ; Ramananantoandro T. ; Radosy H.O. ; Randriambanona H. ; Hervé D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 139
结束页码: 149
语种: 英语
英文关键词: Biomass
; Charcoal
; Growth rings
; Productivity
; Semi-arid
; Shrub
Scopus关键词: Biomass
; Charcoal
; Forestry
; Productivity
; Rural areas
; Sustainable development
; Above ground biomass
; Annual biomass
; Biomass productions
; Charcoal production
; Growth rings
; Semi arid
; Shrub
; Study sites
; Ecology
; aboveground biomass
; biomass
; charcoal
; growth rate
; semiarid region
; shrub
; soil type
; sustainability
; Cameroon
; Madagascar
; Soalara
; South Region
; Toliara
英文摘要: The sustainability of woody charcoal production activity is analysed in xerophytic thickets in southwestern Madagascar. The above ground biomass productivity of xerophytic thickets and the biomass corresponding to woody charcoal production in the Soalara-Sud commune were estimated and compared. All individuals >3 cm diameter in 40 4 × 4 m2 plots were harvested for above ground biomass measurements. Four treatments, defined by soil type (lixisol and calcisol) and distance from villages (near ≤ 4 km; far > 4 km), were tested. The growth rings, assumed to be annual, of the shrub trunk with the largest diameter, presumed to be the oldest specimen on each 4 × 4 m2 plot, were counted to estimate the duration of biomass production on the plot. Above ground biomass productivity was estimated by the ratio between above ground biomass and growth rings number. The mean above ground biomass productivity varied between 0.38 and 0.99 t ha−1 year−1 of dry mass according to the four treatments. It did not vary significantly with soil type and increased with distance from villages on lixisol where woody charcoal is produced. The total above ground biomass of xerophytic thickets used for woody charcoal production on the current woody charcoal production site is around 862.55 t year−1 of fresh matter, equivalent to 107.82 t of woody charcoal. However, the effective woody charcoal production on the study site in 2013 was equal to 600.90 t, which is higher than the woody charcoal production allowed by the xerophytic thickets above ground biomass productivity. Consequently, woody charcoal production activity in the study site is unsustainable and will result in the disappearance of mature individuals belonging to species used for woody charcoal production in less than 15 years. Once this occurs, woody charcoal production will be moved to other xerophytic thickets on calcisol. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64229
Appears in Collections: 影响、适应和脆弱性
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作者单位: Département des Eaux et Forêts, Ecole Supérieure des Sciences Agronomiques, BP 175, Université d'Antananarivo, Antananarivo, Madagascar; Centre National de Recherches sur l'Environnement, BP 1739, Antananarivo, Madagascar; Institut de Recherche pour le Développement (UMR 220 GRED: IRD-UPV), Université Paul Valéry, Site Saint-Charles, rue du Professeur Henri Serre, Route de Mende, Cedex 5, Montpellier, France
Recommended Citation:
Randriamalala J.R.,Ramananantoandro T.,Radosy H.O.,et al. Annual biomass increment of Xerophytic thickets and sustainability of woody charcoal production in southwestern Madagascar[J]. Forest Ecology and Management,2017-01-01,400