Download or read book Trees Shrubs and Lianas of West African Dry Zones written by Michel Arbonnier and published by Editions Quae. This book was released on 2004 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Working the Sahel written by W.M. Adams and published by Routledge. This book was released on 2005-08-08 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on four years of field research, the authors look at how farmers manage biological resources, crop and non-crop biodiversity, soil fertility, and transform the landscape through agricultural intensification.

Download or read book Notes on Trees and Shrubs in Arid and Semi arid Regions written by Michel Baumer and published by Food & Agriculture Org.. This book was released on 1983 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Trees and Shrubs of the Sahel written by Hans-Jürgen von Maydell and published by Balogh Scientific Books. This book was released on 1990 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Exploitation of Plant Resources in Ancient Africa written by Marijke van der Veen and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a completely new and very substantial body of information about the origin of agriculture and plant use in Africa. All the evidence is very recent and for the first time all this archaeobotanical evidence is brought together in one volume (at present the information is unpublished or published in many disparate journals, confer ence reports, monographs, site reports, etc. ). Early publications concerned with the origins of African plant domestication relied almost exclusively on inferences made from the modem distribution of the wild progenitors of African cultivars; there existed virtually no archaeobotanical data at that time. Even as recently as the early 1990s direct evidence for the transition to farming and the relative roles of indigenous versus Near Eastern crops was lacking for most of Africa. This volume changes that and presents a wide range of ex citing new evidence, including case studies from Nigeria, Burkina Faso, Ethiopia, Uganda, Egypt, and Sudan, which range in date from 8000 BP to the present day. The volume ad dresses topics such as the role of wild plant resources in hunter-gatherer and farming com munities, the origins of agriculture, the agricultural foundation of complex societies, long-distance trade, the exchange of foods and crops, and the human impact on local vege tation-all key issues of current research in archaeology, anthropology, agronomy, ecol ogy, and economic history.

Download or read book Non timber Uses of Selected Arid Zone Trees and Shrubs in Africa written by Frances E. M. Booth and published by Food & Agriculture Org.. This book was released on 1988 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Grazing Land Ecosystems of the African Sahel written by Henry N. Le Houerou and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: 7. 2 The Pilot Zone of the FerIo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 7. 2. 1 Geographical Zoning and Administrative Setup. . . . . . . . . . . . . 157 7. 2. 2 Climate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 7. 2. 3 The Substratum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 7. 2. 4 Surface Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 7. 2. 5 Vegetation and Rangelands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 7. 2. 6 Wildlife. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 7. 2. 7 Livestock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 7. 2. 8 Evolution of Land Use and History of Development . . . . . . . . 170 7. 3 Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 7. 3. 1 Principles, Problems and Methods . . . . . . . . . . . . . . . . . . . . . . . . 181 7. 3. 2 Evaluation of Green Herbaceous Biomass by Orbital Remote Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 7. 3. 3 Evaluation of Range Production from Ground Sampling . . . . 207 7. 3. 4 Low Altitude Systematic Reconnaissance Flights (SRF) . . . . . . 211 7. 3. 5 Practical Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 7. 4 Conclusions on Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 8 General Conclusions: Towards an Ecological Management of the Sahelian Ecosystems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241 Subject Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269 of Scientific Names. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275 . . . . . . . . . . . . Index Animals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275 Plants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 VII Abbreviations and Acronyms AVHRR Advanced Very High Resolution Radiometer CILSS Comite Inter-Etats de Lutte contre la Secheresse au Sahel CIPEA Centre International pour l'Elevage en Afrique CNRS Centre National de la Recherche Scientifique CP Crude Protein (N x 6.

Download or read book Plant Communities and Their Environment written by Manuel Oliveira and published by BoD – Books on Demand. This book was released on 2020-09-09 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents different perspectives on how to understand the complex interaction between plants and the environment. Plant communities adapt to biotic and abiotic stresses with different mechanisms and understanding these phenomena provides the means to better manage our environment and to cultivate crops that better serve our needs.

Download or read book Woody Plants in Agro Ecosystems of Semi Arid Regions written by Henk Breman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a quantitative analysis of the role of woody plants in semi-arid regions, for the aSSessment of their benefits in agrosylvopastoralland-use systems with productive and sus tainability objectives. The insights presented and conclusions drawn allow the additional benefits of woody plants for specific climatic and physical site conditions and land-use systems to be estimated. The Sahel and Sudan zones in West Africa, on which the book focusses, represent resource-poor conditions, whose ecological dynamics have been relatively well studied. The role of woody plants in this region, as assessed in this book, is extrapolated to other semi-arid regions, leading to general conclusions on agroforestry's potential as an option for sustainable land use in semi-arid regions. The origins of this book go back to 1982, when the Club du Sahel requested that available data on woody plants in the Sahel region be synthesised, to provide basic information to enable better attention to be given to woody plants in rural development programmes. We are grateful to the Club du Sahel for this challenge. Various people contributed to studies used in this book. The preliminary inventory of the data available was made by Frits Ohler; later his work was continued by Franciska Dekker.

Download or read book Societies and Nature in the Sahel written by Philippe Lavigne Delville and published by Routledge. This book was released on 2002-06 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examining the conditions for land occupation and natural resource use in the Sahel, this book offers a conceptual and practical approach to social organization and environmental management in the face of rapid environmental change.

Download or read book Atlas of cultural and environmental change in arid Africa written by Olaf Bubenzer and published by Heinrich-Barth-Institut. This book was released on 2007-01-01 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Biology and Utilization of Shrubs written by Cyrus McKell and published by Elsevier. This book was released on 2012-12-02 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Biology and Utilization of Shrubs brings together the wide range of information about shrubs from many disciplines and world locations. The book is organized into seven parts. Part I describes the major shrublands found on each of the vegetated continents. It provides an overview of the dominant shrubland types as well as the associated features of soil and climate that influence the geographic distribution of major shrub species. Part II discusses environmental influences and plant responses. Part III considers the range of genetic diversity for important traits and how these may vary in different habitats. Part IV discusses the effects of stress on physiological processes of shrubs, and the kinds of strategies shrubs employ to meet physiological stress. Part V offers evidence to support the claim that the many virtues of shrubs provide a basis for sustaining shrub use for livestock fodder, wildlife habitat, reclamation and erosion control, fuel, and naturalized landscaping. Part VI outlines methods for collecting and processing seeds from natural stands or from superior genotypes planted in seed production orchards. Part VII describes cultural adaptation to shrub use in a livestock-dominated primitive culture, followed by a detailed economic analysis of establishing shrub plantations to improve livestock production.

Download or read book Desertification written by Monique Mainguet and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Controversial, and often discussed with passion and vehemence, desertification is a problem on whose solution the survival of millions of humans is dependent. This book aims at an understanding of what is commonly called "desertification" - a term which has a connotation of irreversibility, spreading and emergence of desert-like landscapes: "land degradation" is proposed to replace it. The purpose is to present what has happened in reality, and what might be done. Illustrative worldwide analyses allow a more realistic evaluation of global land degradation. Each level of technology, excessive or insufficient, creates its own mismanagement. This is reflected in a decrease in soil productivity and eventually land degradation. The benefit to the reader is an awareness of the ecozones which have undergone the most severe land degradation, and a global overview of the phenomena, mechanisms and existing solutions.

Download or read book The Drought Crisis in the African Sahel written by United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Africa and published by . This book was released on 1973 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Drought Crisis in the African Sahel written by United States. Congress. House. Foreign Affairs and published by . This book was released on 1973 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agroforestry in the West African Sahel written by and published by National Academies. This book was released on 1983 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research report on traditional land utilization and agroforestry in the West African Sahel - discusses climatic influence and other causes of increasing desertification; examines the role of resources conservation in agricultural planning; looks at traditional farming systems; considers economic and social benefits as well as applications of agroforestry; emphasizes the value of agricultural extension and popular participation to overcome obstacles, etc. Bibliography, diagrams and photographs.

Download or read book Browse in Africa written by and published by ILRI (aka ILCA and ILRAD). This book was released on with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: