Sinet, Ethiopian Journal of Science PDF Download

Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 796

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Publisher: Food & Agriculture Org.
ISBN: 9251390401
Category :
Languages : en
Pages : 224

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Author: Marvin H. J. Gruber
Publisher: JHU Press
ISBN: 0801894263
Category : Mathematics
Languages : en
Pages : 425

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Praise for the first edition --

Author: Teresa Fidalgo Fonseca
Publisher: BoD – Books on Demand
ISBN: 0854663177
Category : Science
Languages : en
Pages : 126

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Conifers have diversified stand structures, silvicultural systems, yields, and products and services. The continuous analysis and modeling of conifer stands improves understanding of stands and forests and allows the improvement of their productivity, benefits, and services while maintaining sustainability. Moreover, detailed knowledge of conifer stands enables the development of alternative management scenarios to cope with disturbances. This book is a collection of reviews and research studies in several fields and with different perspectives on conifer stand management, regeneration, growth, production, genetics, ethnobotany disturbances, and wooden constructions.

Author: Seleshi Bekele Awulachew
Publisher: Routledge
ISBN: 1136469435
Category : Science
Languages : en
Pages : 346

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The Nile provides freshwater not only for domestic and industrial use, but also for irrigated agriculture, hydropower dams and the vast fisheries resource of the lakes of Central Africa. The Nile River Basin covers the whole Nile Basin and is based on the results of three major research projects supported by the Challenge Program on Water and Food (CPWF). It provides unique and up-to-date insights on agriculture, water resources, governance, poverty, productivity, upstream-downstream linkages, innovations, future plans and their implications. Specifically, the book elaborates the history and the major current and future challenges and opportunities of the Nile river basin. It analyzes the basin characteristics using statistical data and modern tools such as remote sensing and geographic information systems. Population distribution, poverty and vulnerability linked to production system and water access are assessed at the international basin scale, and the hydrology of the region is also analysed. This text provides in-depth scientific model adaptation results for hydrology, sediments, benefit sharing, and payment for environmental services based on detailed scientific and experimental work of the Blue Nile Basin. Production systems as they relate to crops, livestock, fisheries and wetlands are analyzed for the whole Blue and White Nile basin including their constraints. Policy, institutional and technological interventions that increase productivity of agriculture and use of water are also assessed. Water demand modeling, scenario analysis, and tradeoffs that inform future plans and opportunities are included to provide a unique, comprehensive coverage of the subject.

Author: Luis Fernando Marmolejo Rebellon
Publisher: BoD – Books on Demand
ISBN: 953510795X
Category : Technology & Engineering
Languages : en
Pages : 363

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Solid waste management generates big challenges for society due to its large variability in production and composition, and because of its sanitary and environmental impacts. To contribute in facing this situation, this book includes a worldwide overview of experiences and conceptual and technical developments attained through research and development projects. In addition to minimizing generation, considered as the most desirable practice, it includes alternatives of valuation for potentially recoverable waste and strategies to reduce final conditioning and disposition risks. The book includes contextual technical, economical, political and social aspects aimed at proposing integral solutions for the solid waste management.

Author: Girma Kebbede
Publisher: Routledge
ISBN: 1315464276
Category : Science
Languages : en
Pages : 208

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Ethiopia is facing environmental and poverty challenges, and urgently needs effective management of its environmental resources. Much of the Ethiopian landscape has been significantly altered and reshaped by centuries of human activities, and three-quarters of the rural population is living on degraded land. Over the past two decades the country has seen rapid economic and population growth and unparalleled land use change. This book explores the challenges of sustaining the resource base while fuelling the economy and providing for a growing population that is greatly dependent on natural resources for income and livelihoods. Adopting a political ecology perspective, this book comprehensively examines human impacts on the environment in Ethiopia, defining the environment both in terms of the quantity and quality of renewable and non-renewable natural resources. With high levels of economic production and consumption also come unintended side effects: waste discharges, emissions of pollutants, and industrial effluents. These pollutants can degrade the quality of water, air, land, and forests as well as harm the health of people, animals, and other living organisms if untreated or disposed of improperly. This book demonstrates how the relationship between society and environment is inherently and delicately interwoven, providing an account of Ethiopia’s current environment and natural resource base and future considerations for environmentally sustainable development.

Author: Richard W. Battarbee
Publisher: Springer Science & Business Media
ISBN: 1402021216
Category : Science
Languages : en
Pages : 653

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This book focuses on two complementary time-scales, the Holocene (approximately the last 11,500 years) and the last glacial-interglacial cycle (approximately the last 130,000 years) to synthesize evidence of climate variability at the regional and continental scale across Europe and Africa. This is the first examination of historical climate variations at such a scale, and thus sets a benchmark for future research.

Author: Frans Bongers
Publisher: Routledge
ISBN: 1136532358
Category : Science
Languages : en
Pages : 378

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Forest degradation as a result of logging, shifting cultivation, agriculture and urban development is a major issue throughout the tropics. It leads to loss in soil fertility, water resources and biodiversity, as well as contributes to climate change. Efforts are therefore required to try to minimize further degradation and restore tropical forests in a sustainable way. This is the first research-based book to examine this problem in East Africa. The specific focus is on the forests of Ethiopia, Tanzania and Uganda, but the lessons learned are shown to be applicable to neighbouring countries and others in the tropics. A wide range of forest types are covered, from dry Miombo forest and afromontane forests, to forest-savannah mosaics and wet forest types. Current management practices are assessed and examples of good practice presented. The role of local people is also emphasized. The authors describe improved management and restoration through silviculture, plantation forestry and agroforestry, leading to improvements in timber production, biodiversity conservation and the livelihoods of local people.

Author:
Publisher: PROTA
ISBN: 9057821915
Category : Vegetable oils
Languages : en
Pages : 239

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