Deforestation in the Americas during the 1980s

1
Deforestation in the Americas during the 1980s

• Jane Doe
• George Mason University

2
Deforestation in the Americas during the 1980s

• Policy issues
• Hypotheses
• Data
• Results
• Conclusions and recommendations

3
(No Transcript)
4
Hypotheses

• Deforestation is positively correlated with a
  countrys population density and population
  growth
• Deforestation is higher in countries that suffer
  civil wars

5
Variables Descriptive stats (n28)
Deforestation Average annual deforestation rate
(), 1981-90 Pop density Avg number of persons
per sq mile, 1981-90 Pop growth Avg annual
population growth rate (), 1980-85 War
Significant civil conflict during 1980s (1yes)
6
Issues in the data
7
Independent-sample t-testsY Avg annual
deforestation rate ()
 
 
plt0.05 plt0.01
8
Regression models

Y annual deforestation rate () p-values in
parentheses plt0.1 plt0.05 plt0.01
9
Conclusions Recommendations

• Population density is strongly correlated with
  deforestation population growth is weakly
  correlated (agreeing with expectations).
• War is associated with lower deforestation
  (contrary to expectations).
• Policy responses
• Identify and protect most valuable areas
• Promote emigration, forest product importation