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Title: Spatial distribution of forest biomass in Brazil's state of Roraima, northern Amazonia
Authors: Barni, Paulo Eduardo
Manzi, Antônio Ocimar
Condé, Tiago Monteiro
Barbosa, Reinaldo Imbrozio
Fearnside, Philip Martin
Keywords: Agriculture
Environmental Protection
Gas Emissions
Global Warming
Greenhouse Gases
Land Use
Agricultural use
Brazilian Amazonia
Carbon Stocks
Climatic regions
Kriging technique
Northern Amazonia
Protected Areas
Spatial Distribution
Aboveground Biomass
Belowground Biomass
Carbon Emission
Carbon Sequestration
Dry Season
Forest Fires
Global Warming
Greenhouse Gas
Protected Area
Spatial Distribution
United Nations Framework Convention On Climate Change
Issue Date: 2016
metadata.dc.publisher.journal: Forest Ecology and Management
metadata.dc.relation.ispartof: Volume 377, Pags. 170-181
Abstract: Forest biomass is an important variable for calculating carbon stocks and greenhouse gas emissions from deforestation and forest fires in Brazilian Amazonia. Its spatial distribution has caused controversy due to disagreements over the application of different calculation methodologies. Standardized networks of forest surveys provide an alternative to solve this problem. This study models the spatial distribution and original total stock of forest biomass (Aboveground + Belowground + Fine and coarse litter) in Brazil's state of Roraima, taking advantage of data from georeferenced forest surveys in the region. Commercial volume (bole volume) from surveys was expanded to total biomass. Kriging techniques were used to model the spatial distribution of biomass stocks and generate a benchmark map. All results were associated with phytophysiognomic groups, climatic regions and land uses (protected areas; agricultural use). We estimate forest in the state of Roraima to have an original biomass stock of 6.32 × 109 Mg. Forest biomasses in areas with shorter dry seasons were higher as compared to forests in regions with longer dry seasons. The original vegetation in protected areas, independent of phytophysiognomic group, has higher biomass compared to areas currently under agricultural use. Protected areas support 65.8% of Roraima's stock of forest biomass, indicating an important potential role in REDD projects for conservation of forest carbon. Information on spatial distribution of biomass stocks at a more refined scale is needed to reduce uncertainties about the regional character of carbon pools in Amazonia. © 2016 The Authors
metadata.dc.identifier.doi: 10.1016/j.foreco.2016.07.010
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