Carbon Cycle Flashcards
1
Q
What is the forest called
A
‘Lungs of the earth’
2
Q
Amazonian soils contain what and pasturelands what
A
4-9kg carbon in the upper 50cm of soils
1kg per m2 (significantly less)
3
Q
Store of carbon
A
Wood is 50% carbon = trees are a huge carbon store/sink
4
Q
Input of carbon
A
Amazon absorbs 2.2 billion tons of CO2 every year through photosynthesis
5
Q
Output of carbon
A
Amazon emits 1.9 billion tons through decomposition and respiration in a year
6
Q
Net carbon store
A
0.3 billion tons
7
Q
How much carbon is stored in Amazon soil
A
Amazon soil carbon - 27% of global carbon total
8
Q
What’s happening to trees (3)
A
Productivity increasing = increased conc co2 = phtosynethsis
Amount of co2 sequestered in Amazon increasing
Growing quicker but dying younger
