Deforestation (AQA GCSE Geography): Revision Note
Exam code: 8035
Specification links
The notes on this page cover part of 3.1.2.2 Tropical rainforests on the AQA GCSE specification. (opens in a new tab)
3.1.2.2 - Key idea: Deforestation has economic and environmental impacts.
Changing rates of deforestation.
Changing rates of deforestation
Deforestation is the felling and clearance of trees
Brazil, Democratic Republic of the Congo, Bolivia and Indonesia are experiencing the highest levels of deforestation in the world
Rates of deforestation steadily increased from 2001 to 2016
Since 2016 there has been a slight decrease in deforestation of tropical forests
Worked Example
Study Figure 1, a graph showing global forest loss from 2011 to 2017
Using figure 1, calculate the mean global forest loss from 2011 to 2017. Give your answer to one decimal place.
[1 mark]
Answer:
23.4 (accept 23.3) million hectares [1 mark]
17.5 + 23.3 + 20.4 + 23.5 + 19.8 + 29.7 + 29.4 = 163.6/7 = 23.37
Marking guidance
To calculate the mean the figures for each year need to be added up and then divided by the number of years.
The final figure then needs to be rounded to one decimal place.
In this answer 23.37 - the number second after the decimal point is 7 which is 5 or higher therefore it needs to be rounded up to 23.4.
Examiner Tips and Tricks
When giving an answer to one decimal point you will need to round the number up or down. Remember if the second digit after the decimal point is 4 or less you round down. If the second digit is 5 or more you round up. For example,
23.3714 would become 23.4 because the second digit after the decimal point is 7
23.3314 would become 23.3 because the second digit after the decimal point is 3
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