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Changes in Carbon cycle (Deforestation :deciduous_tree: (reasons (logging,…
Changes in Carbon cycle
Volcanic eruptions :volcano:
Releases Carbon sequestered for millions of years
Silica in lava
reacts with and reomves Co2 from the atmosphere
very slowly
130-380 million tonnes of CO2/ year
human activities release 30 billion tonnes
Wildfires :fire:
Quasi natural
Change carbon sinks to carbon source
carbon released to atmosphere
↓ trees
↓ sequestration
Natural climate change :earth_asia:
Regular climate cycles over last 2.5 million years
Glacials and interglacials
Deforestation :deciduous_tree:
reasons
logging
agriculture
urbanisation
20% of all global emmisions
burning
co2 ➘ atmosphere faster than natural decay
↑ co2 ➘ atmosphere
Farming :cow2:
Increases
population growth
↑ demand for produce all year round
↑ machinery
Ploughing
Releases carbon from soil
Methane/ CO2 from animals
Land Use Changes :house_buildings:
10% of carbon release
97% of anthropogenic emissions
Fossil Fuels :skull_and_crossbones:
70-100 million year old rocks
Hydrocarbons