Data/hora: 20/06/2024 03:11:33

Biblioteca(s): | Embrapa Cerrados.
Data corrente: | 18/04/1997
Data da última atualização: | 18/04/1997
Autoria: | KELLY, T. C.
Título: | A bioeconomic systems approach to sustainability analysis at the farm level.
Ano de publicação: | 1995
Fonte/Imprenta: | Florida: University of Florida, 1995.
Páginas: | 210p.
Descrição Física: | PhD Thesis.
Idioma: | Português
Conteúdo: | An integrated, whole-farm simulation model that links biophysical process models with a multi-period recursive programming model of famer decision-making is developed to address farm-level sustainability questions. This model provides a framework with which to analyze the effects over time of a farmer's decisions regarding cropping pattems, cultural practices, and farming technologies as they relate to the sustainability of the farming system. Sustainability definitions and concepts are reviewed, particularty as they apply to farm-level analysis, which leads to a definition of sustainability that is operational at the farm level. The moral philosophy underpinning notions of sustainability is discussed and ethical issues relating to the obligation to the futureare explored. Serious questions arise regarding the validity of standard discounting techniques and economic evaluation methods when applied to environnental and natural resource problems. Ethical issues complicate sustainability analysis, suggesting that moral ordering tecniques should be employed together with economic valuation methods. The farm sustainability model developed in this study  consists of an economic decision-making component and a simulation component thar models biophysical processes and sets up the succeeding economic componet. The IBSNAT crop molels are used to simulate crop growth and the of soil nitrogen. The economic model is a multi-period nonlinear programming modelwith a chance-constraint on nitrogen leachate. The farm model is ...
Palavras-Chave: | Economics analysis; Enfoque sustemico; Modelo; Sustainability; Sustentabilidade; Systems approach.
Thesagro: | Agricultura; Economia.
Thesaurus Nal: | agriculture; models.
Categoria do assunto: | --
Registro original: | Embrapa Cerrados (CPAC)
Exemplares: | CPAC - (13579-1) - ADC - TS - -- - T009/95 - KEL - T009/95 - DIS