《林业经济学》课程教学资源（PPT课件讲稿，英文版）Forest Production

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Forest Production

Forest Production 1. HARVESTING COSTS IN THE SOUTH 2. PRODUCTION THEORY 3. PRODUCTION AND COST OF HARVESTING SOUTHERN TIMBER 4. CONCLUSION

Forest Production 1. HARVESTING COSTS IN THE SOUTH 2. PRODUCTION THEORY 3. PRODUCTION AND COST OF HARVESTING SOUTHERN TIMBER 4. CONCLUSION

HARVESTING COSTS IN THE SOUTH o Cubbage(1983) Harvesting System Simulator (Stuart 1981) o Wang et al. (1998) GIS modelling framework o Kluender et al(1998)removal intensity and tree size on harvesting costs and profitability

HARVESTING COSTS IN THE SOUTH u Cubbage(1983) Harvesting System Simulator (Stuart 1981) u Wang et al.(1998) GIS modelling framework u Kluender et al.(1998) removal intensity and tree size on harvesting costs and profitability

PRODUCTION THEORY e Production functions ◆ Cost functions ◆ Revenue functions ◆ Profit functions o Input-Input Relationships oProduct-Product Relationships

PRODUCTION THEORY uProduction Functions uCost Functions uRevenue Functions uProfit Functions uInput-Input Relationships uProduct-Product Relationships

PRODUCTION THEORY e Production functions A production function is a basic input output relationship that describes a biophysical relationship or production process y=f(x)

PRODUCTION THEORY uProduction Functions uA production function is a basic input- output relationship that describes a biophysical relationship or production process y  f (x)

PRODUCTION THEORY Average Product APxi= y X Marginal product MPri= axi Elasticity of Production Oy xi Oxi y

PRODUCTION THEORY Average Product Marginal Product Elasticity of Production xi y APxi  xi y MPxi    y xi xi y i    

PRODUCTION THEORY ◆ Cost functions e Cost functions represent the minimum cost of producing a good or service at gIven input prices. c(w,y)=min wx

PRODUCTION THEORY uCost Functions uCost functions represent the minimum cost of producing a good or service at given input prices. c(w, y)  min wx

PRODUCTION THEORY C MC ac AVC O Q Firm’ s supply curve

PRODUCTION THEORY Firm’s supply curve

PRODUCTION THEORY ◆ Revenue functions o Revenue functions represent the maximum revenue that can be derived from given output prices and a set of inputs R(p, x)=max p

PRODUCTION THEORY uRevenue Functions uRevenue functions represent the maximum revenue that can be derived from given output prices and a set of inputs. R( p, x)  max py

PRODUCTION THEORY TR Ar OTR Mr AR=MR=P

PRODUCTION THEORY y TR AR  y TR MR    AR  MR  p