Doutorado em Engenharia Ambiental

URI Permanente para esta coleção

http://repositorio.ufes.br/handle/10/17611

Nível: Doutorado
Ano de início:
Conceito atual na CAPES:
Ato normativo:
Periodicidade de seleção:
Área(s) de concentração:
Url do curso:

Navegar

Navegando Doutorado em Engenharia Ambiental por Assunto "Agricultura familiar"

Agora exibindo 1 - 2 de 2
  • Nenhuma Miniatura disponível
    Item
    Avaliação de racionalidades do uso da água na agricultura : desenvolvimento de modelos conceituais e de procedimento metodológico em apoio à co/auto-gestão de microbacias
    (Universidade Federal do Espírito Santo, 2011-04-14) Lopes, Marcos Eugênio Pires de Azevedo; Teixeira, Edmilson Costa; Mendonça, Antônio Sérgio Ferreira; Reis, Edvaldo Fialho dos; Medeiros, Yvonilde Dantas Pinto; Paz, Vital Pedro da Silva
    This work presents the development of an innovative methodological procedure, applicable to real situations which integrates participatory methodology and multicriteria analysis. The adopted participatory methodology was the River Basin Game and the method utilised in the multicriteria analysis was the Weighted Average Method. The problematic that justified this study refers to: (a) a dominant understanding about the rationalisation of the use of water resources in irrigation that represents a partial perspective, essentially underpinned by the need of technological advances and (b) the imbalance in between formal and local water management, in part stemming from the aforementioned problematic, whereas various aspects are related to, amongst them, conceptual constraints of water policies, gap between technical-scientific institutions and society, low levels of society participation in water management. This reality results in the low (or inadequate) implementation of water policies that ends up perpetuating development models based on dominant concepts and, often, excluding society’s most disenfranchised groups. In this sense, the developed methodological procedure was applied in a real situation: the analysis of agricultural water management in the catchment of Sossego creek (Itarana city, Espirito Santo state, Brazil). In this area, smallholder farmers and irrigated agriculture are predominant. It was possible to analyse how the study area is subject to Brazilian formal water policy and faces water scarcity, predominantly due to intensification of and inadequate distribution of water in irrigation. The integration of the adopted tools was rather significant as, amongst other advances, it allowed, richly and significatively, the involvement of different stakeholders with diverse levels and kinds of knowledge (Academy, farmers, public institutions) aiming at the construction of a local model and the gathering of alternatives to the search for solutions to the inadequate water management. Hence, this promoted balance between local and technical knowledges. Furthermore, through the application of the methodological procedure, the dominant idea of rationalisation was corroborated, though there is evidence that new rationalities could be (or have already been) adopted, with the benefits and consolidation of adaptive co-management.
  • Nenhuma Miniatura disponível
    Item
    Modelo conceitual para sistemas de armazenamento de água para irrigação na agricultura familiar
    (Universidade Federal do Espírito Santo, 2023-11-30) Domínguez, Valeria Albán; Teixeira, Edmilson Costa; http://lattes.cnpq.br/2223526989758235; https://orcid.org/0000-0002-0234-1840; http://lattes.cnpq.br/6552815548803019; Buarque, Diogo Costa; https://orcid.org/000000032698520X; http://lattes.cnpq.br/8616432679482558; Moreira, Michel Castro; Medeiros, Pedro Henrique Augusto; Reis, José Antonio Tosta dos; http://lattes.cnpq.br/7828468159099998; Vaneli, Bruno Peterle
    Water storage for family farming becomes a key tool for the progress of water and food security at local, regional and global levels. For this type of agricultural production, strategic location and decentralized use of small storage technologies are recommended in order to favor the equitable distribution of their potential benefits and impacts. However, challenges are identified in planning water storage systems for small irrigation systems (SAAIAF), especially in relation to the definition/evaluation of their configuration, which is specific to the number, type, volume and location of storage structures that may fulfill water demands in regions. These challenges are related to the variability and uncertainties of natural hydrological phenomena, which interact with and are influenced by complex social dynamics from different natures at distinct spatiotemporal scales. Furthermore, there is a lack of methodological tools in the literature that assist to define/evaluate the SAAIAF configuration, aiming to the integrated planning of these storage structures for individual and collective use in family farming. In this sense, a conceptual model has been developed that explains the SAAIAF as a complex of three components, which are: catchment (CAP), storage (RES) and command (IRR). For this to happen: 1. factors that influence performance and, therefore, the configuration of the SAAIAF have been identified and organized into natural and human dimensions; 2. relations between elements of the SAAIAF components were identified in the literature, grouped into the categories catchment-command (CAP-IRR), catchment-storage (CAP-RES) and storagecommand (RES-IRR), and understood them as indicators that contribute to its planning/evaluation; and 3. the developed model was tested in the Córrego Sossego basin (affluent of Santa Joana river; this being an affluent of Doce river in Espírito Santo portion in Brazil), for a planning scenario in which there is no information about the SAAIAF configuration and for different types of technologies used in family farming. The conceptual model has shown the potential to be used to plan/evaluate SAAIAF considering hydro-agroclimatic conditions and simplifications about the storage sizing and spatialization of the components, for different types of technologies. The model's indicators provided information of SAAIAF's performance, related to aspects of the water balance, and identifying possible deficits and/or potentials to satisfy its water demands. 9 The importance of progress on the improvement and integration of indicators is recognized, as well as the incorporation of other factors related to the performance of SAAIAF, to advance the integrated planning of the systems related to the definition/evaluation of their configuration.