The study looked at factors at play in the Amazon -- fires, deforestation, weather and the expansion of ranching -- and concluded that greenhouse gases including methane and nitrous oxide being emitted in the Amazon basin offset and most likely exceed the region's ability to soak up carbon dioxide.
Access the full report HERE. (Source: Frontiers in Forests and Global Change, 11 Mar., 2021) Contact: Frontiers in Forests and Global Change, +41(0)21 510 17 40,
Fax +41 (0)21 510 17 01, www.frontiersin.org
More Low-Carbon Energy News Amazon Rainforest, GHGs, Carbon Emissions, Climate Change,
The study, published August 5 in the journal Nature Geoscience, found that accounting for phosphorus-deficient soils reduced projected CO2 uptake by an average of 50 pct in the Amazon, compared to current estimates based on previous climate models that did not take into account phosphorus deficiency. The Amazon Basin is critical to help mitigate climate change due to its trees absorbing around a quarter of the CO2 released each year from the burning of fossil fuels.
According to Berkeley Lab research scientist and study co-author Jennifer Holm, "Most predictions of the Amazon rainforest's ability to resist climate change are based on models that have outdated assumptions; one of those is that a sufficient supply of nutrients such as phosphorus exist in soils to enable trees to take in additional CO2 as global emissions increase," said . "But in reality the ecosystem is millions of years old, highly weathered, and therefore depleted of phosphorus in many parts of the Amazon."
Agriculture, forestry, and other types of land use account for 23 pct of human-caused GHG emissions, yet at the same time natural land processes absorb the equivalent of almost a third of CO2 emissions from fossil fuels and industry, according to the recently released International Panel on Climate Change (IPCC) report on land and climate interactions.
(Source: DOE/Lawrence Berkeley National Laboratory, PR, Eureka Alert, 20 Aug., 2019) Contact: US DOE
Office of Science, energy.gov/science; LBNL, Jennifer Holm, Research Scientist and Study Co-author, www.linkedin.com/in/jennifer-holm-265600b, www.lbl.gov
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The May 2019 deforestation is 25 pct higher than in May 2018, May, and twice that of May, 2017.
Earlier this year, Brazil's freshman President Jair Bolsonaro's administration was reportedly planning to follow US President Donald Trump's lead and pull Brazil out of the Paris Climate Agreement. In his first 5 months in office, Bolsonaro abolished the ministries that dealt with climate change, trimmed the remaining agencies' budgets and now wants to privatize vast areas of the Amazon rain forest for agribusiness, timber and mining interests. (Source: Various Media, Reuters, June, 2019)
More Low-Carbon Energy News Amazon Deforestation, Carbon Emissions, Deforestation,