Abstract
Carbon sequestration involves the removal of CO2 from the atmosphere, aiming to reduce the greenhouse effect. Wood basic density is a direct part of this process. We selected five trees in each of the following species to determine wood basic density and quantify carbon, both sequestered and fixed, for 10 years: Alchornea sidifolia, Ceiba speciosa, Gallesia integrifolia, Guazuma ulmifolia, Inga marginata, Maclura tinctoria, and Prunus cerasoides. The study was conducted in the Commemorative Arboretum of 500 Years of Brazil in Alberto Löfgren State Park, São Paulo. Using maximum moisture content capture of CO, we studied variations of wood density and CO2, both fixed and sequestered, by an individual tree in the same species and between species. Values of fixed and sequestered CO2 showed variations among species with a high dependence on wood density such that trees with higher amounts of CO2, both fixed and abducted, were also trees that showed the highest increment both in height and diameter (DBH). Based on these metrics, G. ulmifolia, I. marginata, M. tinctoria, and P. cerasoides showed the most potential to sequester carbon. Our calculations showed that planting these four species would result in the sequestration of around 30 tons of carbon per hectare.
Highlights
The incidence of pollutants emitted into the air has risen steadily in the last few decades, and all countries are contributors
The Clean Development Mechanism (CDM) was created at the Kyoto Conference as an instrument by which developed countries could invest in projects to promote carbon sequestration and reduce CO2 emissions (Barreto et al, 2009)
Basic density was higher in G. ulmifolia, I. marginata, M. tinctoria, and P. cerasoides (Figure 1a)
Summary
The incidence of pollutants emitted into the air has risen steadily in the last few decades, and all countries are contributors. Carbon dioxide (CO2) gas, one of the compounds released into the atmosphere by man, is produced in all parts of the planet, mainly by burning petroleum-derived fuels and by producing cement (75% of total emissions). In view of the increase in CO2 emissions, which have intensified the greenhouse effect, likely accounting for a significant increase in temperature on the planet, governments have debated ways to minimize these emissions without harming economic growth. Some initiatives are based on reducing emissions, acquiring carbon credits, implementing projects based on clean technologies in other countries, and planting more trees in order to absorb CO2 emissions. The Clean Development Mechanism (CDM) was created at the Kyoto Conference as an instrument by which developed countries could invest in projects to promote carbon sequestration and reduce CO2 emissions (Barreto et al, 2009)
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