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Publicação
Modelação económica visando o apoio à decisão no uso e produtividade da água em regadio
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Resumo(s)
Improving crop water productivity requires new approaches to economic modelling,
considering alternative irrigation scheduling and irrigation systems performance. The present
study aims at applying an economic modelling to water use and productivity in irrigated areas.
It intends to determine the potential of irrigation systems at field scale to achieve an efficient
water use, giving particular attention to maximizing the beneficial water use and the physical
and economic water productivities. Thus several water-saving scenarios were developed
taking into account alternative solutions to the irrigation practices adopted at the selected
fields. Economic analysis and multicriteria analysis methodologies have been developed,
implemented, evaluated, and incorporated in system design models (MIRRIG, PROASPER,
DEPIVOT). It was possible to identify the best strategies to achieve improved water
productivities using the economic modelling coupled with multicriteria analysis modules. The
benefits and costs related to irrigation systems and management, through managed water
demand, using deficit irrigation, and through the improvement of irrigation systems
performance were also considered. The methodology developed proves to be a useful tool to
support decision making at the field level, aiming at the sustainability of agricultural systems.
Descrição
Doutoramento em Engenharia dos Biossistemas - Instituto Superior de Agronomia
Palavras-chave
water productivity economic analysis irrigation systems performance deficit irrigation modelling
Contexto Educativo
Citação
Rodrigues, G.P.F.C. - Modelação económica visando o apoio à decisão no uso e produtividade da água em regadio. Lisboa: ISA, 2013, 284 p.