DOI: 10.1002/2015GL063497
论文题名: Quantifying the net contribution of the historical Amazonian deforestation to climate change
作者: Exbrayat J.-F. ; Williams M.
刊名: Geophysical Research Letters
ISSN: 0094-8756
EISSN: 1944-8487
出版年: 2015
卷: 42, 期: 8 起始页码: 2968
结束页码: 2976
语种: 英语
英文关键词: aboveground biomass
; Amazon basin
; deforestation
; random forest
; remote sensing
Scopus关键词: Artificial intelligence
; Decision trees
; Deforestation
; Ecology
; Land use
; Learning algorithms
; Learning systems
; Remote sensing
; Above ground biomass
; Amazon basin
; Atmospheric CO
; Current estimates
; Forest landscape
; Land-use change
; Random forests
; Tropical deforestation
; Climate change
; algorithm
; atmospheric chemistry
; carbon dioxide
; climate change
; deforestation
; environmental assessment
; forest cover
; land use change
; remote sensing
; Amazon Basin
英文摘要: Recent large-scale carbon (C) emissions from deforestation have been estimated by combining remotely-sensed land use change information with satellite-based aboveground biomass (AGB) data. However, these estimates are constrained to the satellite era while regions such as the Amazon basin have been heavily impacted by deforestation before this period. Assessing the net contribution of past tropical deforestation to the growth in atmospheric CO2 is therefore challenging. We address this lack of data by constructing two maps of potential AGB with a machine learning algorithm trained on the relationship between AGB and climate and topography in intact forest landscapes of the Amazon basin. Reconstructions converge to a current deficit of 11.5-12% in AGB or a net loss of ∼7-8 Pg C of AGB in the Amazon basin compared to current estimates. This represents a net contribution of ∼1.8 ppm of atmospheric CO2 or 1.5% of the historical growth. ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929502484&doi=10.1002%2f2015GL063497&partnerID=40&md5=c911b938871342d5228a139eccb51402
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8372
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of GeoSciences, National Centre for Earth Observation, University of Edinburgh, Edinburgh, United Kingdom
Recommended Citation:
Exbrayat J.-F.,Williams M.. Quantifying the net contribution of the historical Amazonian deforestation to climate change[J]. Geophysical Research Letters,2015-01-01,42(8).