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Delft University of Technology (2016)

Managing Basin Interdependencies in a Heterogeneous, Highly Utilized and Data Scarce River Basin in Semi-Arid Africa

Kiptala, J.K.

Titre : Managing Basin Interdependencies in a Heterogeneous, Highly Utilized and Data Scarce River Basin in Semi-Arid Africa

Auteur : Kiptala, J.K.

Université de soutenance : Delft University of Technology

Grade : Doctorates of Delft University of Technology and of the Academic Board of the UNESCO-IHE Institute for Water Education. 2016

Résumé
For integrated water resources management both blue and green water resources in a river basin and their spatial and temporal distribution have to be considered. This is because green and blue water uses are interdependent. In sub-Saharan Africa, the upper landscapes are often dominated by rainfed and supplementary irrigated agriculture that rely on green water resources. Downstream, most blue water uses are confined to the river channels, mainly for hydropower and the environment. Over time and due to population growth and increased demands for food and energy, water use of both green and blue water has increased. This book provides a quantitative assessment of green-blue water use and their interactions. The book makes a novel contribution by developing a hydrological model that can quantify not only green but also blue water use by many smallholder farmers scattered throughout the landscape. The book provides an innovative framework for mapping ecological productivity where gross returns from water consumed in agricultural and natural vegetation are quantified. The book provides a multi-objective optimization analysis involving green and blue water users, including the environment. The book also assesses the uncertainty levels of using remote sensing data in water resource management at river basin scale.

Sujets : Land use and land cover Evapotranspiration Biomass MODIS Remote sensing Reservoir operation SEBAL Water productivity Water value Water allocation Soil water Green water Rainfed agriculture Supplementary irrigation Kilimanjaro Arusha Water Resources (C CITG WM WRS)

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Page publiée le 1er janvier 2017, mise à jour le 27 septembre 2017