| DOI: | 10.1111/gcb.12600
|
| 论文题名: | Perturbations in the carbon budget of the tropics |
| 作者: | Grace J.; Mitchard E.; Gloor E.
|
| 刊名: | Global Change Biology
|
| ISSN: | 13541013
|
| 出版年: | 2014
|
| 卷: | 20, 期:10 | | 起始页码: | 3238
|
| 结束页码: | 3255
|
| 语种: | 英语
|
| 英文关键词: | Carbon emissions
; Deforestation
; Forest degradation
; Human development index
; Land-use change
|
| Scopus关键词: | biomass
; carbon budget
; carbon emission
; carbon sink
; deforestation
; human development index
; land use change
; tropical forest
; vegetation type
; carbon
; soil
; biomass
; carbon cycle
; carbon sequestration
; chemistry
; environmental protection
; fire
; forest
; metabolism
; soil
; tropic climate
; Biomass
; Carbon
; Carbon Cycle
; Carbon Sequestration
; Conservation of Natural Resources
; Fires
; Forests
; Soil
; Tropical Climate
|
| 英文摘要: | The carbon budget of the tropics has been perturbed as a result of human influences. Here, we attempt to construct a 'bottom-up' analysis of the biological components of the budget as they are affected by human activities. There are major uncertainties in the extent and carbon content of different vegetation types, the rates of land-use change and forest degradation, but recent developments in satellite remote sensing have gone far towards reducing these uncertainties. Stocks of carbon as biomass in tropical forests and woodlands add up to 271 ± 16 Pg with an even greater quantity of carbon as soil organic matter. Carbon loss from deforestation, degradation, harvesting and peat fires is estimated as 2.01 ± 1.1 Pg annum-1; while carbon gain from forest and woodland growth is 1.85 ± 0.09 Pg annum-1. We conclude that tropical lands are on average a small carbon source to the atmosphere, a result that is consistent with the 'top-down' result from measurements in the atmosphere. If they were to be conserved, they would be a substantial carbon sink. Release of carbon as carbon dioxide from fossil fuel burning in the tropics is 0.74 Pg annum-1 or 0.57 MgC person-1 annum-1, much lower than the corresponding figures from developed regions of the world. © 2014 John Wiley & Sons Ltd. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/62185
|
| Appears in Collections: | 影响、适应和脆弱性
|
|
There are no files associated with this item.
|
|
作者单位: | School of GeoSciences, The University of Edinburgh, Edinburgh, United Kingdom; The School of Geography, University of Leeds, Leeds, United Kingdom
|
| Recommended Citation: | |
Grace J.,Mitchard E.,Gloor E.. Perturbations in the carbon budget of the tropics[J]. Global Change Biology,2014-01-01,20(10)
|
|
|