Sokoine University of Agriculture

Impacts of land use changes on water balance in the Ruvu river sub-basin: the case on Mvuha river sub-catchment

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dc.contributor.author Masaro, S. D.
dc.date.accessioned 2019-07-15T08:18:40Z
dc.date.available 2019-07-15T08:18:40Z
dc.date.issued 2018
dc.identifier.uri http://www.suaire.sua.ac.tz/handle/123456789/2865
dc.description M.Sc. Dissertation en_US
dc.description.abstract This study was carried out to assess spatial and temporal land use changes that have occurred over a period of 40 years in Mvuha River sub-catchment and its impacts to the water balance. The specific objectives of this study were i) to determine the spatial and temporal changes on land use and land cover in Mvuha River sub-catchment for the past forty years, ii) carry out statistical and trend analysis of temporal rainfall and river discharge and iii) to determine runoff hydrologic response and water quality response to land use in the sub-catchment. Land use and land cover change detection was conducted using Remote sensing and GIS techniques, trend analysis of temporal rainfall and river discharge was evaluated using statistical methods and lastly rainfall simulation experiments were used to determine runoff, hydrologic and water quality response to land use. Results showed that there were significant land use changes and/or conversions. For example forest, bushland and swamps decreased while woodland, grassland, settlement and agriculture increased. Analysis of temporal rainfall data showed that rainfall trend is almost constant and analysis of river discharge data showed a decreasing discharge rate. Correlation of longterm rainfall data and discharge rate showed a weak positive correlation which imply weak association. Rainfall simulation experiments revealed significant difference on runoff, hydrologic response and water quality response with land use. Grazing showed the highest runoff rate followed by cultivation and lastly forested land use. In terms of water quality, grazing lands had the highest insoluble suspended solids followed by agricultural land use and lastly forested land use which had the least insoluble suspended solids. The study recommends that Wamii-Ruvu water Basin office (WRBO) to have clear strategies to protect forests from encroachers and reduced livestock grazing activities in the catchment. In addition, suitable land use planning and management strategies are needed in order to avoid catchment degradation. en_US
dc.description.sponsorship Innovative Agriculture Research Initiative (iAGRI) en_US
dc.language.iso en en_US
dc.publisher Sokoine University of Agriculture en_US
dc.subject Land use changes en_US
dc.subject Land use en_US
dc.subject Water balance en_US
dc.subject Ruvu river sub-basin en_US
dc.subject River sub-basin en_US
dc.subject Mvuha river sub-catchment en_US
dc.subject Mvuha river en_US
dc.subject Sub-catchment en_US
dc.subject Morogoro en_US
dc.subject Tanzania en_US
dc.title Impacts of land use changes on water balance in the Ruvu river sub-basin: the case on Mvuha river sub-catchment en_US
dc.type Thesis en_US


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