DOI: 10.1016/j.foreco.2015.04.032
Scopus记录号: 2-s2.0-84937220311
论文题名: The influence of stand variables and human use on biomass and carbon stocks of a transitional African forest: Implications for forest carbon projects
作者: Lung M. ; Espira A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 351 起始页码: 36
结束页码: 46
语种: 英语
英文关键词: Above ground biomass
; Carbon stocks
; Forest carbon project
; Human use of forests
; Kenya
; Transitional tropical forest
Scopus关键词: Biomass
; Charcoal
; Energy efficiency
; Logging (forestry)
; Timber
; Tropics
; Above ground biomass
; Carbon stocks
; Forest carbons
; Human use
; Kenya
; Tropical forest
; Forestry
; carbon sequestration
; ecological zonation
; energy efficiency
; field method
; human activity
; logging (timber)
; lowland environment
; montane forest
; phytomass
; quantitative analysis
; sampling
; stand dynamics
; tropical forest
; viability
; Biomass
; Carbon
; Forests
; Kakamega
; Kakamega Forest
; Kenya
英文摘要: The viability and effectiveness of forestry-based carbon projects depends on the accurate estimation of carbon stocks as well as understanding the variables that influence carbon stocks, including human activity. However, for much of Africa, accurate, ground-based measurements are few, forests have centuries of human use, and the variables that influence forest biomass and carbon stocks are not well understood. The objectives of this study were to use field-based sampling to estimate aboveground biomass (and associated carbon stocks), and explore AGB variation in relation to forest stand characteristics and human biomass removal in an African tropical forest that lies in a transitional ecological zone between lowland equatorial and moist montane forest. We quantified tree densities, estimated plot aboveground biomass (AGB) using pan-tropical allometric equations, and estimated human biomass removal in four regions of Kakamega Forest in western Kenya that varied in historical and current human use. Our carbon stock estimate (173.3MgCha-1) was above large biome averages for moist tropical forests. Diameter of the largest tree, stem densities of large trees, and wood density were the most important variables influencing biomass, accounting for over 75% of the variation. While historical disturbance influenced biomass removal, we did not find that this disturbance or biomass removal significantly influenced AGB. The reason was that most biomass removal involves trees in small size classes, which are insignificant contributors to biomass. Our findings provide a field based estimate of carbon stocks for a transitional tropical forest. We also conclude that processes (both natural and anthropogenic) which influence the presence and health of species which can attain large size will have the greatest impact on biomass, while processes that influence stem densities of small trees will have no measurable effect. The application of these findings for forestry-based carbon projects would translate to the need for special attention being paid to activities which prevent or minimize loss of large dense trees (e.g. charcoal production, selective logging) if the carbon stock of a forest is to be maintained. On the other hand, activities which limit subsistence use in terms cutting small stems (e.g. energy efficient stoves), might not have measureable immediate effects on carbon stocks and the financial outcomes associated with the generation and sale of the carbon credits. © 2015 Elsevier B.V.. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65392
Appears in Collections: 影响、适应和脆弱性
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作者单位: Eco2librium Corporation, 106. N. 6th Street, #204, Boise, ID, United States; Eco2librium Corporation-Kenya, P.O. Box 560, Kakamega, Kenya
Recommended Citation:
Lung M.,Espira A.. The influence of stand variables and human use on biomass and carbon stocks of a transitional African forest: Implications for forest carbon projects[J]. Forest Ecology and Management,2015-01-01,351