Human Impacts On Carbon Cycle

Question 1

Deforestation

Answer 1

Agriculture, wood extraction, infrastructure expansion, urbanisation
In the Amazon alone scientists estimate that trees contain more carbon than 10yrs of human production

Question 2

Cement manufacturing

Answer 2

The production of cement produces greenhouse gases.
Direct emissions of cement comes from calcination

Question 3

Farming practices

Answer 3

Most farm relates emissions come from methane and nitrous oxide
Most farms fail to monitor emissions
In 2011 agriculture and farms emissions 6million tonnes of greenhouse gases

Question 4

Carbon sequestration

Answer 4

Capturing CO2 from the atmosphere and putting into long term storage
2 types- geologic, terrestrial

Question 5

Geologic sequestration

Answer 5

CO2 captured at its source, then injected in liquid form into underground stores.
Adv- sunk within weeks or months of being captured
Disadv- experimental process

Question 6

Terrestrial/biological sequestration

Answer 6

Use of plants to capture CO2 to store in the stems and roots and soil
Adv- enrichment of wildlife
Disadv- could lose carbon to atmosphere in a fire

Question 7

Carbon budget

Answer 7

Relative amounts of carbon that are transferred in a given time period between various stores