Short term changes in the carbon cycle Flashcards
1
Q
How do the flows of carbon change diurnally?
A
Daytime = Atmospheric CO2 moves to vegetation
Night = Flux is reversed
2
Q
How are seasonal changes in carbon cycle shown?
A
Month-to-month changes in NPP
3
Q
What drives seasonal changes in the carbon cycle flows?
A
Photoperiod and temperature
4
Q
What are the carbon cycle flows in the northern hemisphere summers?
A
Trees full foliage = CO2 global flow from atmosphere to biosphere
5
Q
What does this cause?
A
Atmospheric C02 levels fall
6
Q
What happens at the end of summer?
A
Photosynthesis ends = flow reversed and natural decomposition releases CO2 back to atmosphere.
