Amazon Human factors affecting stores and flows of water #6 Flashcards
1
Q
What is the rate of deforestation a year?
A
17,500km2 a year
2
Q
How much of the primary forest has been destroyed?
A
1/5th
3
Q
What has deforestation caused for the Madeira River
A
Flooding of Madeira River because of reduced water stored in trees, soils (erosion) and permeable rock (rapid run-off)
4
Q
How much has deforestation for grazing increased run off by?
A
Factor of 27
5
Q
How do trees affect processes?
A
Increase interception and evapotranspiration
6
Q
What can trees help to stablilise
A
Forest’s albedo affect and ground temps
7
Q
How can deforestation cause climate change?
A
Evapotranspiration decreases, humidity decreases and less rain occurs so forests dry
