Amazonian Deforestation and Increased Carbon Dioxide Release By: Rocky Soeharyo David Palay Claire BarcoGC1 Lab section 3.

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Presentation transcript:

Amazonian Deforestation and Increased Carbon Dioxide Release By: Rocky Soeharyo David Palay Claire BarcoGC1 Lab section 3

Roadmap  Hypothesis.  Things to consider. -photosynthesis -photosynthesis -Amazônia -Amazônia -Deforestation -Deforestation  What we did…  What this means…

Deforestation leads to an increased release of CO ² into the atmosphere…but by how much?

Photosynthesis ² out of the atmosphere, and adds O² Photosynthesis takes CO² out of the atmosphere, and adds O²

Amazônia  Amazonia covers most of Brazil and parts of Peru, Bolivia, Columbia, Venezuela, and Ecuador  Dense forest with enormous biodiversity  Important to global climate regulation…

Amazônia…

Deforestation  Before 1970, an area the size of Portugal had already been deforested.  Since then, deforestation has increased due to globalization factors… Ometto JP et al.

Deforestation, con’t  Most trees are simply burned to clear land for cattle or soybean crops.  Burning releases more CO² than logging.

The problem: Burning releases CO². Less trees means less photosynthesis. Deforestation leads to more CO² with less trees to take it out.

What we did…  Through our research, we found multiple estimates of deforestation and burning rates, along with estimates of the size of Amazônia and how much carbon is held per hectare.  We used these estimates to calculate how much CO² is added to the atmosphere through deforestation.

our process: 1.Rate of deforestation and how long its been going on 2.Rate * Time = Total Deforested Area 3.Carbon release from combustion 4.Carbon released per area * Total Deforested Area = Gross Carbon Release 5.Photosynthetic uptake of carbon 6.Gross Carbon Release – Photosynthetic Uptake = Net Carbon Flux =.397 PgC/year! 7.Only % of carbon in in the atmosphere.

Model:

Graphs: Carbon level in the atmosphere goes from 747 Pg to 769

Tree coverage is reduced due to deforestation leading to…

Photosynthesis uptake changes from 1.7 Pg C to 1.6

In the future…  If rates of logging and burning were to continue as they were in the years until 2049, the amount of carbon in the atmosphere would increase from 747 Pg to 1034 Pg. That is a contribution of 287 Pg in 50 years. This could have grave results.

Take home message: