The economics of soil nutrient stocks and cattle ranching in the tropics: optimal pasture degradation in humid Costa Rica
作者： Erwin H Bulte , Bas AM Bouman , Roel AJ Plant , André Nieuwenhuyse , Hans GP Jansen
关键词: Externality 、 Agriculture 、 Sustainability 、 Tropics 、 Environmental science 、 Economic efficiency 、 Soil retrogression and degradation 、 Nutrient 、 Agroforestry 、 Agricultural land 、 Agronomy
摘要: We present a model that can be used to analyse economically optimal nutrient (nitrogen) stocks in agricultural lands. The is applied study cattle ranching humid Costa Rica. numerical results indicate that, for current meat prices and discount rate, it privately 'mine' soil nitrogen. In the long run, efficiency consistent with degraded abandoned pastures, as observed region. Sustainable pasture management efficient only rate close zero or at about twice highest recorded value 1985-1997. highlight potential conflict between sustainability economic efficiency. Caveats externalities are not included our discussed.
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