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Author : Anonim
Publisher : Cuvillier Verlag
Page : 190 pages
File Size : 44,6 Mb
Release : 2005-02-15
Category : Science
ISBN : 9783736917019
Author : Barnabas Akurigo Amisigo
Publisher : Cuvillier Verlag
Page : 199 pages
File Size : 44,8 Mb
Release : 2005
Category : Electronic
ISBN : 9783865377012
Author : Joie Chiana Taylor
Publisher : Unknown
Page : 146 pages
File Size : 47,8 Mb
Release : 2003
Category : Electronic
ISBN : CORNELL:31924090207311
Author : Ayodele Ebenezer Ajayi
Publisher : Cuvillier Verlag
Page : 157 pages
File Size : 47,7 Mb
Release : 2004
Category : Hydraulics
ISBN : 9783865370976
"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.
Author : Matthew McCartney,Gerald Forkuor,Aditya Sood,Barnabas Amisigo,Fred Hattermann,Lal Muthuwatta
Publisher : IWMI
Page : 46 pages
File Size : 55,7 Mb
Release : 2012
Category : Electronic
ISBN : 9789290907640
The Volta River is one of the major rivers in Africa. In this study, a dynamic regional climate model (CCLM), a hydrological model (SWAT) and a water resource model (WEAP) were used to provide an assessment of one downscaled ‘middle impact’ climate change scenario on the performance of existing and planned irrigation and hydropower schemes. The results indicate that, by the middle of the twenty-first century, altered climate is likely to undermine the technical performance of existing and planned reservoirs, which will, in turn, affect development outcomes. Future water resources development in the basin requires interventions that bolster resilience and water security. Much more systematic planning of water storage, greater cooperation between the riparian states and consideration of innovative approaches to water storage are needed.
Author : Raymond Abudu Kasei
Publisher : Unknown
Page : 183 pages
File Size : 46,8 Mb
Release : 2010
Category : Electronic
ISBN : 3940124206
Author : Timothy O. Williams,Marloes Mul,Charles A. Biney,Vladimir Smakhtin
Publisher : Routledge
Page : 376 pages
File Size : 49,9 Mb
Release : 2016-09-19
Category : Nature
ISBN : 9781317479536
The Volta River Basin (VRB) is an important transboundary basin in West Africa that covers approximately 410,000 square kilometres across six countries: Benin, Burkina Faso, Côte d’Ivoire, Ghana, Mali and Togo. Its natural resources sustain the livelihoods of its population and contribute to economic development. This book provides a comprehensive, interdisciplinary review and assessment of the issues and challenges faced. The authors provide a science-based assessment of current and future scenarios of water availability, the demands of key sectors, including agriculture and hydropower, and the environment under changing demographic, economic, social and climatic conditions. They also identify solutions and strategies that will allow available water resources to be sustainably used to improve agricultural productivity, food security and economic growth in the VRB. Overall, the work examines from a multidisciplinary and multi-stakeholder perspective the solutions and strategies to improve the use of water and other natural resources in the VRB to achieve enhanced food security, livelihoods and economic growth.
Author : Purna Nayak
Publisher : BoD – Books on Demand
Page : 326 pages
File Size : 55,9 Mb
Release : 2012-03-21
Category : Science
ISBN : 9789535102465
Hydrology is the science that deals with the processes governing the depletion and replenishment of water resources of the earth's land areas. The purpose of this book is to put together recent developments on hydrology and water resources engineering. First section covers surface water modeling and second section deals with groundwater modeling. The aim of this book is to focus attention on the management of surface water and groundwater resources. Meeting the challenges and the impact of climate change on water resources is also discussed in the book. Most chapters give insights into the interpretation of field information, development of models, the use of computational models based on analytical and numerical techniques, assessment of model performance and the use of these models for predictive purposes. It is written for the practicing professionals and students, mathematical modelers, hydrogeologists and water resources specialists.
Author : Fernando António Leal Pacheco
Publisher : MDPI
Page : 332 pages
File Size : 45,5 Mb
Release : 2020-04-30
Category : Science
ISBN : 9783039286447
This book on the sustainable use of soils and water addressed a variety of issues related to the utopian desire for environmental sustainability and the deviations from this scene observed in the real world. Competing interests for land are frequently a factor in land degradation, especially where the adopted land uses do not conform with the land capability (the natural use of soil). The concerns of researchers about these matters are presented in the articles comprising this Special Issue book. Various approaches were used to assess the (im)balance between economic profit and environmental conservation in various regions, in addition to potential routes to bring landscapes back to a sustainable status being disclosed.
Author : Jia’en Lin
Publisher : Springer Nature
Page : 1347 pages
File Size : 41,9 Mb
Release : 2024-06-29
Category : Electronic
ISBN : 9789819704750
Author : Sidibe, Yoro,Williams, Timothy O.,Kolavalli, Shashidhara
Publisher : Intl Food Policy Res Inst
Page : 20 pages
File Size : 51,7 Mb
Release : 2016-02-26
Category : Social Science
ISBN : 8210379456XXX
This review describes a range of physical and socio-economic scientific methods and field activities that will be implemented in a proposed research project to develop a better understanding of the extent and patterns of flooding and the potential of flood-recession agriculture. These activities will allow the hydrological characteristics of the river to be matched to crop-livestock systems of flood recession agriculture that are well suited to the study communities and their organizational and institutional frameworks in order to support sustainable growth of such systems. This detailed study will provide recommendations on the technical, economic, institutional and policy measures needed to achieve sustainable intensification of flood recession agriculture in northern Ghana, while complementing efforts undertaken to promote other types of water management systems. Options for out-scaling of flood recession agriculture beyond the study area to other suitable areas will also be explored. The expectation is that the proposed project will improve food security by enhancing knowledge on effective flood recession practices, enhance rural incomes through expanded dry-season farming with new opportunities for rural employment, and improve adaptation to climate change by building more resilient farming communities. To achieve these expected outcomes, proactive policies that clearly identify flood recession agriculture as an alternative farming practice and provide institutional mandates to irrigation support services to promote it through training, demonstration, and outreach programs will be equally valuable.
Author : Taye Kufa Obso
Publisher : Cuvillier Verlag
Page : 331 pages
File Size : 40,8 Mb
Release : 2006
Category : Electronic
ISBN : 9783867279901
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.
Author : Maria Teresa Almanza Fandiño
Publisher : Cuvillier Verlag
Page : 131 pages
File Size : 47,8 Mb
Release : 2007
Category : Electronic
ISBN : 9783867271875
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.
Author : Kassahun Tesfaye Geletu
Publisher : Cuvillier Verlag
Page : 160 pages
File Size : 43,5 Mb
Release : 2006
Category : Coffee
ISBN : 9783867279864
Author : Damaris Achieng Odeny
Publisher : Cuvillier Verlag
Page : 115 pages
File Size : 48,6 Mb
Release : 2006
Category : Electronic
ISBN : 9783867279918
