文档介绍：Environment and Natural Resource Economics Course
Nanjing Agriculture University
September 4 to September 30, 2006
Lecturers: Volker Beckmann, Humboldt University Max Spoor, ISS, The Hague
Justus Wesseler, Wageningen University
Lecture 8
The efficient and optimal use of renewable resources
Lecturer: Dr. Justus Wesseler, Wageningen University
Literature: Perman et al. (2003),
What are renewable resources?
Examples:
Renewable stock resources: fishery, forestry, water, wildlife, arable land, grazing land, soil, anti-biotic and pesticide resistance
Renewable flow resources: solar, wave, wind, and geothermal energy
We consider only renewable stock resources
Biological growth processes for renewable resources
Change of population over time:
Stock level at any point in time:
Integration of the growth process
Growth Function
Where is the maximum growth rate?
S
MAX
S
MSY
0
G(S)
S
Logistic biological growth function
Logistic biological growth function with threshold level