Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13453 |
Deadwood stocks increase with selective logging and large tree frequency in Gabon | |
Carlson, Ben S.1; Koerner, Sally E.1; Medjibe, Vincent P.1,2; White, Lee J. T.2,3,4; Poulsen, John R.1 | |
2017-04-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Gabon; Scotland |
英文摘要 | Deadwood is a major component of aboveground biomass (AGB) in tropical forests and is important as habitat and for nutrient cycling and carbon storage. With deforestation and degradation taking place throughout the tropics, improved understanding of the magnitude and spatial variation in deadwood is vital for the development of regional and global carbon budgets. However, this potentially important carbon pool is poorly quantified in Afrotropical forests and the regional drivers of deadwood stocks are unknown. In the first large-scale study of deadwood in Central Africa, we quantified stocks in 47 forest sites across Gabon and evaluated the effects of disturbance (logging), forest structure variables (live AGB, wood density, abundance of large trees), and abiotic variables (temperature, precipitation, seasonality). Average deadwood stocks (measured as necromass, the biomass of deadwood) were 65 Mg ha(-1) or 23% of live AGB. Deadwood stocks varied spatially with disturbance and forest structure, but not abiotic variables. Deadwood stocks increased significantly with logging (+ 38 Mg ha(-1)) and the abundance of large trees (+ 2.4 Mg ha(-1) for every tree > 60 cm dbh). Gabon holds 0.74 Pg C, or 21% of total aboveground carbon in deadwood, a threefold increase over previous estimates. Importantly, deadwood densities in Gabon are comparable to those in the Neotropics and respond similarly to logging, but represent a lower proportion of live AGB (median of 18% in Gabon compared to 26% in the Neotropics). In forest carbon accounting, necromass is often assumed to be a constant proportion (9%) of biomass, but in humid tropical forests this ratio varies from 2% in undisturbed forest to 300% in logged forest. Because logging significantly increases the deadwood carbon pool, estimates of tropical forest carbon should at a minimum use different ratios for logged (mean of 30%) and unlogged forests (mean of 18%). |
英文关键词 | aboveground biomass (AGB) carbon storage coarse woody debris (CWD) deadwood necromass tropical forest |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396836800024 |
WOS关键词 | COARSE WOODY DEBRIS ; ABOVEGROUND LIVE BIOMASS ; LINE INTERSECT METHOD ; FOREST CARBON STOCKS ; TROPICAL RAIN-FOREST ; BRAZILIAN AMAZON ; FUNCTIONAL DIVERSITY ; LOGGED FORESTS ; CENTRAL-AFRICA ; OLD-GROWTH |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17423 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Duke Univ, Nicholas Sch Environm, POB 90328, Durham, NC 27708 USA; 2.Agence Natl Parcs Nationaux, Batterie 4,BP 20379, Libreville, Gabon; 3.Inst Rech Ecol Trop, BP 1354, Libreville, Gabon; 4.Univ Stirling, Sch Nat Sci, African Forest Ecol Grp, Stirling, Scotland |
推荐引用方式 GB/T 7714 | Carlson, Ben S.,Koerner, Sally E.,Medjibe, Vincent P.,et al. Deadwood stocks increase with selective logging and large tree frequency in Gabon[J]. GLOBAL CHANGE BIOLOGY,2017,23(4). |
APA | Carlson, Ben S.,Koerner, Sally E.,Medjibe, Vincent P.,White, Lee J. T.,&Poulsen, John R..(2017).Deadwood stocks increase with selective logging and large tree frequency in Gabon.GLOBAL CHANGE BIOLOGY,23(4). |
MLA | Carlson, Ben S.,et al."Deadwood stocks increase with selective logging and large tree frequency in Gabon".GLOBAL CHANGE BIOLOGY 23.4(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论