Rainforests and semi-arid lands are both susceptible to land degradation. There are reasons, both human and physical, for this. Management strategies have been employed to control the problem.
What percentage of the Amazon Basin has been cleared over the last forty years?
10 per cent
20 per cent
50 per cent
Which of the following is NOT a reason for rainforest clearance?
Too many trees
Land for agriculture, houses and roads
Creating jobs for local workers in road building, logging, agriculture, mining and construction
Which of the following is an environmental consequence of land degradation in the rainforest?
Profits from large-scale farming and selling resources often go back to developed countries or large companies and don't benefit the rainforest communities
The traditional, indigenous way of life is destroyed as forests are cleared
Global climate is affected through the loss of trees and the resulting enhanced greenhouse effect
Which of the following is NOT a strategy to manage land degradation in the rainforest?
Returning forest areas to indigenous people
Which of the following is a human cause of land degradation in semi-arid areas?
Water shortages, caused by major drought
Increased demand for firewood
Which of the following is an economic consequence of land degradation in semi-arid areas?
As the land becomes unproductive, farm income falls
People are forced to migrate, with many men leaving to work in cities
As vegetation is removed the roots are no longer able to bind the soil together and the soil becomes vulnerable to wind erosion
Which of the following is NOT a solution to land degradation in semi-arid areas?
Crop rotation by farmers to allow soil to recover
Restore natural vegetation cover
Encourage more grazing