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Martin-Luther-Universität Halle-Wittenberg (2018)

An expert‐based ecosystem services assessment under land use and land cover changes and different climate scenarios in northern Ghana, West Africa

Kleemann, Janina

Titre : An expert‐based ecosystem services assessment under land use and land cover changes and different climate scenarios in northern Ghana, West Africa

Auteur : Kleemann, Janina

Université de soutenance : Martin-Luther-Universität Halle-Wittenberg

Grade : Doktorgrades der Naturwissenschaften (Dr. rer. nat.) 2018

Résumé
Land use and land cover change (LULCC) is the result of complex human-environmental interactions which influence the provision of ecosystem services (ES). Modeling interactions can help to determine the consequences of LULCC and to identify key actions to counteract the negative impacts. The Upper East Region was taken as case study that belongs to the poorest areas within Ghana. More than 90 experts were involved in a modeling approach with a Bayesian Belief Network. The focus of the model was set to seasonal food and freshwater provision in rainy and dry season. The results showed higher probability of food provision during the dry season than provision in the following rainy season before the harvest because much less is produced during the dry season, and food storage is very primitive. The study revealed that an increase in income levels might be more effective than improved agricultural programs, increased market demand, increased irrigation, reduced soil erosion, and reduced post-harvest loss for contributing to food security.

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