Download or read book Modeling Land use Change in the Volta Basin of Ghana written by Ademola K. Braimoh and published by Cuvillier Verlag. This book was released on 2004 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Land change studies in a 5,400km2 area within the Volta Basin of Ghana were carried out using satellite image and socio-economic analyses. The dominant change process was conversion of natural vegetation to cropland at an annual rate of 5%. Reversible land change trajectories involving accumulation of woody biomass indicate a certain level of rainfall-induced ecosystem resilience. Linear and logistic regressions identified agricultural land suitability, distance from main market and localities, child-dependency ratio and population density as the main drivers of change. Policy measures that would relieve human pressure on vegetation resources, guarantee food supply and promote commercialization of agriculture are suggested.

Download or read book Modeling Land Use Change in the Volta Basin of Ghana written by Zoltán Sinkó and published by Cuvillier Verlag. This book was released on 2005 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Land change studies in a 5,400km2 area within the Volta Basin of Ghana were carried out using satellite image and socio-economic analyses. The dominant change process was conversion of natural vegetation to cropland at an annual rate of 5%. Reversible land change trajectories involving accumulation of woody biomass indicate a certain level of rainfall-induced ecosystem resilience. Linear and logistic regressions identified agricultural land suitability, distance from main market and localities, child-dependency ratio and population density as the main drivers of change. Policy measures that would relieve human pressure on vegetation resources, guarantee food supply and promote commercialization of agriculture are suggested.

Download or read book Multi agent System for Simulation of Land use and Land Cover Change written by Bao-Le Quang and published by Cuvillier Verlag. This book was released on 2005 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modelling Riverflow in the Volta Basin of West Africa written by Barnabas Akurigo Amisigo and published by Cuvillier Verlag. This book was released on 2005 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Upscaling of Land Surface Parameters Through Inverse SVAT Modeling written by Joseph D. Intsiful and published by Cuvillier Verlag. This book was released on 2004 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon Sequestration Potential of Land Cover Types in the Agricultural Landscape of Eastern Amazonia Brazil written by Carlos Javier Puig and published by Cuvillier Verlag. This book was released on 2005 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Runoff and Infiltration Processes in the Volta Basin West Africa written by Ayodele Ebenezer Ajayi and published by Cuvillier Verlag. This book was released on 2004 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The study presents the analyses of field observations and simulation experiments with an event-based, two-dimensional hydrodynamic model. The model summarized the interactions between temporally dynamic rainfall, infiltration process and surface runoff in a catchment with varied soil physio-hydraulic properties, surface-roughtness, slope-lengths and vegetation structure. Both observation and simulation results indicate that the observation scale affects runoff coefficient and runoff discharge per unit area. The effect of scale is a result of spatial variability in infiltration opportunities, which vary with the slop length and distribution of saturated conductivity, leading to different trasmission losses potential during runoff routing downslope. The magnitude of the difference is influenced by surface and vegetated microtopography, which determine the flow rate"--Back cover.

Download or read book Impacts of Global Change on the Hydrological Cycle in West and Northwest Africa written by Peter Speth and published by Springer Science & Business Media. This book was released on 2010-08-12 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Africa is highly vulnerable to the impacts of climate change. In particular shortage of fresh water is expected to be the dominant water problem for West and Northwest Africa of the 21th century. In order to solve present and projected future problems concerning fresh water supply, a highly interdisciplinary approach is used in the book. Strategies are offered for a sustainable and future-oriented water management. Based on different scenarios, a range of management options is suggested with the aid of Information Systems and Spatial Decision Support Systems for two river catchments in Northwest and West Africa: the wadi Drâa in south-eastern Morocco and the Ouémé basin in Benin. The selected catchments are representative in the sense: "what can be learnt from these catchments for other similar catchments?

Download or read book Multiscale Analysis of Landscape Data Sets from Northern Ghana written by Nathaniel Kwamina Howard and published by Cuvillier Verlag. This book was released on 2005 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Characterization and Modeling of Spatial Distribution of Saturated Hydraulic Conductivity at Two Sites in the Volta Basin of Ghana written by Wilson Agyei Agyare and published by Cuvillier Verlag. This book was released on 2004 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the key parameters in hydrological and climate change modeling is a good estimation of the soil hydrauic properties in the region of interest. This study investigates the spatial distribution and variability of soil physical properties, with emphasis on saturated hydraulic conductivity at two pilot sites in the Volta Basin of Ghana. It focuses on the potential of pedotransfer functions (PTFs) and artificial neural network (ANN) approach for estimating saturated hydraulic conductivity. Saturated hydraulic conductivity was observed to be highly spatially variable; however, it can be estimated using selected PTFs and ANN for soils in the Volta Basin based on soil parameters that can readily be obtained from detailed soil maps--From cover.

Download or read book Management of Bombus Atratus Bumblebees to Pollinate Lulo Solanum Quitoense L a Native Fruit from the Andes of Colombia written by Maria Teresa Almanza Fandiño and published by Cuvillier Verlag. This book was released on 2007 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solanum quitoense (Lulo) from the northern Andes is a fruit with an attractive taste. It has a high export potential but its production is hampered by insufficient pollination. Studies on the reproductive system of Lulo revealed that, due to their poricidal anthers, the flowers need pollinators for self- and cross-pollination. Pollination by native bumblebees significantly increases fruit set and quality. Experiments show that colonies of Bombus atratus can be reared in captivity and used in Lulo fields for providing increased pollination services. Modeling based on data on colony development reveal larva/workers ratio and the supply of pollen as main parameters for improving the rearing method.

Download or read book The potential of oil palm and forest plantations for carbon sequestration on degraded land in Indonesia written by Syahrinudin and published by Cuvillier Verlag. This book was released on 2005 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant biomass represents a sink for atmospheric carbon dioxide, which is one of the most important greenhouse gases and which is assumed to contribute more than half of the global warming. Establishing tree plantations or perennial crops on degraded land is an effective way to reduce atmospheric carbon by building up terrestrial carbon stocks, not only in the living biomass, but also in the soil. By converting Imperata cylindrica grassland into tree plantations (Acacia mangium or oil palm), aboveground biomass carbon can be increased about 20-fold and below ground biomass carbon up to 8-fold, while soil carbon can almost be doubled.

Download or read book Genetic Diversity of Wild Coffea Arabica Populations in Ethiopia as a Contribution to Conservation and Use Planning written by Kassahun Tesfaye Geletu and published by Cuvillier Verlag. This book was released on 2006 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microsatellite Development and Application in Pigeonpea Cajanus Cajan L Millspaugh written by Damaris Achieng Odeny and published by Cuvillier Verlag. This book was released on 2006 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reservoir Siltation in Ethiopia written by Lulseged Tamene Desta and published by Cuvillier Verlag. This book was released on 2005 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecophysiological Diversity of Wild Arabica Coffee Populations in Ethiopia written by Taye Kufa Obso and published by Cuvillier Verlag. This book was released on 2006 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coffea arabica, one of the economically most important crops worldwide, occurs naturally in the undergrowth of montane rainforests of Ethiopia. The study provides the first detailed ecophysiological investigations of wild coffee populations. It demonstrates the inter- and intra-regional variability in phenotypic and hydrological characteristics of wild coffee. The results reveal very different strategies of wild coffee seedlings for coping with drought stress. The ecophysiological diversity shows the importance of Ethiopian wild coffee populations as gene pools for future breeding programs, and underlines the need for an in-situ conservation strategy. The study includes recommendations for coffee forest management and the use of wild arabica coffee in Ethiopia.

Download or read book The Spatial Distribution of Soil Salinity written by Akmal Akramkhanov and published by Cuvillier Verlag. This book was released on 2005 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils of irrigated lands in the Aral Sea Basin are often plagued by high salinity,hampering profitable agriculture on these soils. In this context, the present study has three specific objectives: to identify techniques that enable a rapid estimation of soil salinity, to characterize its spatial distribution and to estimate its spatial distribution based on readily obtainable environmental parametersusing a Neural Network Model Approach. Topsoil salinity was highly variable atshort distances and terrain attributes were the most influential factors. The use of relationships between environmental attributes and soil salinity for upscaling spatial distribution of soil salinity from farm to district level proved to be satisfactory. A possible application is the development of salinity prediction toolsfor farm-level decision making.