Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Pays Bas → 2021 → Evaluation of agricultural water productivity of smallholder irrigation along sand river : A comparative study in the riverbeds of northern Ethiopia

UNESCO-IHE Institute for Water Education, Delft (2021)

Evaluation of agricultural water productivity of smallholder irrigation along sand river : A comparative study in the riverbeds of northern Ethiopia

Demessie, Sintayehu Fetene

Titre : Evaluation of agricultural water productivity of smallholder irrigation along sand river : A comparative study in the riverbeds of northern Ethiopia

Auteur : Demessie, Sintayehu Fetene

Université de soutenance : UNESCO-IHE Institute for Water Education, Delft

Grade : Master of Science (MS) 2021

Résumé partiel
The water scarcity problem is increasing as a result of the population increment and competition towards the limited water resource by different sectors. This problem will further threaten Africa as a continent due to poverty and the unwise use of the resource. As a result water scarcity boldly influences productivity in the developing continents than developed nations. Due to this, the present challenge of the agriculture sector is to produce more food whilst maintaining or reducing water consumption in the sector. Particularly, in the arid and semi-arid region, the water shortage is very chronic and it is very difficult to get water for irrigation purposes. Smallholder farmer in these regions starts to use a sand dam in the river beds of the Ephemeral River as an alternative for harvesting the rainwater during the rainy season so as to use later in the dry season for irrigation and to other domestic uses. This is now commonly practiced in the Tigray region of Ethiopia particularly in Mai Gobo and Geregera watershed as a means to reduce the water scarcity problems of the region. For better management of the water scarcity problem, it is essential to evaluate the agricultural water productivity of a small-scale irrigation scheme based on the sand river in the region. Therefore, the general objectives of this proposed research were to evaluate agricultural water productivity based on water consumption (ETa) and biomass production of smallholder irrigation schemes along a sand river with and without a sand dam in the riverbeds of northern Ethiopia. This kinds of research are very scarce in the country due to a lack of sufficiently available data. Therefore, to overcome the data scarcity problems, the remote sensing approach was utilized in this study. Remotely sensed satellite data can have a great role in the data-scarce region to estimate water productivity, actual evapotranspiration, and biomass production.

Sujets  : water productivity agricultural water use smallholder irrigation sand rivers river bed Ethiopia biomass production water scarcity land use land cover

Présentation et version intégrale

Page publiée le 8 novembre 2022