Declining Resource Base:

1
Declining Resource Base Loss of Primary
Forest
Frontier forest 8,000 years ago
Frontier forest today
2
Declining Resource Base Shifts in forest
area between 1980-95
Percentage change in 1980 forest Area

• Declining tropical forest cover
• (200 million ha loss (1980-95))
• Recovering temperate forest,
• (20 million ha increase - Europe and N
  America)
• Net decline of 180 million ha worldwide
  (1980-95)

3
Declining Resource Base Increase in protected
area (1900 - 1990)
1400
1200
1000
Million ha
800
600
400
200
1900 1905 1910 1915 1920 1925 1930 1935
1940 1945 1950 1955 1960 1965 1970 1975
1980 1985 1990
Cumulative growth of the worlds protected areas
Source IUCN (1998)