Artigo

Amazonian deforestation and global warming: Carbon stocks in vegetation replacing Brazil's Amazon forest

Carbon stocks in vegetation replacing forest in Brazilian Amazonia affect net emissions of greenhouse gases from land-use change. A Markov matrix of annual transition probabilities was constructed to estimate landscape composition in 1990 and to project future changes, assuming behavior of farmers a...

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Autor principal: Fearnside, Philip Martin
Grau: Artigo
Idioma: English
Publicado em: Forest Ecology and Management 2020
Assuntos:
Biomass Budget
Carbon Sequestration
Carbon Stock
Climatic Change
Deforestation
Deforestation Emission
Greenhouse Gas Emission
Land Use
Net Release
Secondary Forest Growth
Secondary Succession
Amazonas
Brazil, Amazonia
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/19397
id oai:repositorio:1-19397
recordtype dspace
spelling oai:repositorio:1-19397 Amazonian deforestation and global warming: Carbon stocks in vegetation replacing Brazil's Amazon forest Fearnside, Philip Martin Biomass Budget Carbon Sequestration Carbon Stock Climatic Change Deforestation Deforestation Emission Greenhouse Gas Emission Land Use Net Release Secondary Forest Growth Secondary Succession Amazonas Brazil, Amazonia Carbon stocks in vegetation replacing forest in Brazilian Amazonia affect net emissions of greenhouse gases from land-use change. A Markov matrix of annual transition probabilities was constructed to estimate landscape composition in 1990 and to project future changes, assuming behavior of farmers and ranchers remains unchanged. The estimated 1990 landscape was 5.4% farmland, 44.8% productive pasture, 2.2% degraded pasture, 2.1% 'young' (1970 or later) secondary forest derived from agriculture, 28.1% 'young' secondary forest derived from pasture, and 17.4% 'old' (pre-1970) secondary forest. The landscape would eventually approach an equilibrium of 4.0% farmland, 43.8% productive pasture, 5.2% degraded pasture, 2.0% secondary forest derived from agriculture, and 44.9% secondary forest derived from pasture. An insignificant amount is regenerated 'forest' (defined as secondary forest over 100 years old). Average total biomass (dry matter, including below-ground and dead components) was 43.5 t ha-1 in 1990 in the 410 × 103 km2 deforested by that year for uses other than hydroelectric dams. At equilibrium, average biomass would be 28.5 t ha-1 over all deforested areas (excluding dams). These biomass values are more than double those forming the basis of deforestation emission estimates currently used by the Intergovernmental Panel on Climate Change (IPCC). Although higher replacement landscape biomass decreases net emissions from deforestation, these estimates still imply large net releases. © 1996 Elsevier Science B.V. All rights reserved. 2020-06-15T22:08:11Z 2020-06-15T22:08:11Z 1996 Artigo https://repositorio.inpa.gov.br/handle/1/19397 en Volume 80, Número 1-3, Pags. 21-34 Restrito Forest Ecology and Management
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Biomass Budget
Carbon Sequestration
Carbon Stock
Climatic Change
Deforestation
Deforestation Emission
Greenhouse Gas Emission
Land Use
Net Release
Secondary Forest Growth
Secondary Succession
Amazonas
Brazil, Amazonia
spellingShingle Biomass Budget
Carbon Sequestration
Carbon Stock
Climatic Change
Deforestation
Deforestation Emission
Greenhouse Gas Emission
Land Use
Net Release
Secondary Forest Growth
Secondary Succession
Amazonas
Brazil, Amazonia
Fearnside, Philip Martin
Amazonian deforestation and global warming: Carbon stocks in vegetation replacing Brazil's Amazon forest
topic_facet Biomass Budget
Carbon Sequestration
Carbon Stock
Climatic Change
Deforestation
Deforestation Emission
Greenhouse Gas Emission
Land Use
Net Release
Secondary Forest Growth
Secondary Succession
Amazonas
Brazil, Amazonia
description Carbon stocks in vegetation replacing forest in Brazilian Amazonia affect net emissions of greenhouse gases from land-use change. A Markov matrix of annual transition probabilities was constructed to estimate landscape composition in 1990 and to project future changes, assuming behavior of farmers and ranchers remains unchanged. The estimated 1990 landscape was 5.4% farmland, 44.8% productive pasture, 2.2% degraded pasture, 2.1% 'young' (1970 or later) secondary forest derived from agriculture, 28.1% 'young' secondary forest derived from pasture, and 17.4% 'old' (pre-1970) secondary forest. The landscape would eventually approach an equilibrium of 4.0% farmland, 43.8% productive pasture, 5.2% degraded pasture, 2.0% secondary forest derived from agriculture, and 44.9% secondary forest derived from pasture. An insignificant amount is regenerated 'forest' (defined as secondary forest over 100 years old). Average total biomass (dry matter, including below-ground and dead components) was 43.5 t ha-1 in 1990 in the 410 × 103 km2 deforested by that year for uses other than hydroelectric dams. At equilibrium, average biomass would be 28.5 t ha-1 over all deforested areas (excluding dams). These biomass values are more than double those forming the basis of deforestation emission estimates currently used by the Intergovernmental Panel on Climate Change (IPCC). Although higher replacement landscape biomass decreases net emissions from deforestation, these estimates still imply large net releases. © 1996 Elsevier Science B.V. All rights reserved.
format Artigo
author Fearnside, Philip Martin
title Amazonian deforestation and global warming: Carbon stocks in vegetation replacing Brazil's Amazon forest
title_short Amazonian deforestation and global warming: Carbon stocks in vegetation replacing Brazil's Amazon forest
title_full Amazonian deforestation and global warming: Carbon stocks in vegetation replacing Brazil's Amazon forest
title_fullStr Amazonian deforestation and global warming: Carbon stocks in vegetation replacing Brazil's Amazon forest
title_full_unstemmed Amazonian deforestation and global warming: Carbon stocks in vegetation replacing Brazil's Amazon forest
title_sort amazonian deforestation and global warming: carbon stocks in vegetation replacing brazil's amazon forest
publisher Forest Ecology and Management
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/19397
_version_ 1787144560924688384
score 11.674752

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