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Books > Professional & Technical > Agriculture & farming > Forestry & silviculture: practice & techniques
The changing climate, the warming of the world and acid rain are among the greatest problems facing us at the end of the twentieth century. This book describes, for the first time, the effects of these phenomena on the high mountains and the forests of Europe. Mountains and the frozen regions (the cryosphere) not only play a major part in our climatic system, but are also central to our water supplies. Yet our glaciers are shrinking, our lakes and soils are becoming acidified, our forests are damaged and the whole fragile ecosystem of ranges like the Alps and the Caucasus is threatened. Nilsson and Pitt present the evidence and assess the probable effects of these changes on mountain society, tourism, water, flora and fauna. They also examine the uncertainties. Above all they look, too, at the best possible strategies in response to What is happening and at what the next steps should be. Originally published in 1991
The destruction of the tropical forest is one of the major problems of our time. Vast areas are rapidly becoming wastelands which support only a few tough weeds, perhaps some cattle, and the farms allowed to the poor. This book provides a vision of hope: in Latin America. Africa. And South East Asia, growing numbers of people are developing techniques specifically designed to promote the wise use and preservation of remaining forest lands. However, these grassroots strategies are often ignored in favour of grandiose schemes which inevitably fail. This pattern must be broken now or the tropical forests will be lost forever. Published in association with the Smithsonian Institution. Preface by Michael Robinson, Director, National Zoological Park. Smithsonian Institution Originally published in 1988
The need to produce food without the destructive chemical horrors of much modern farming, for an intelligent use of dwindling natural resources and for humane forms of production is universal, the practice is limited. This book is an account of one, large, instance of success in practice. Twenty-five years ago, Winin Pereira, a nuclear physicist abandoned academia to start a co-operative farm at Alonde in a tribal area north of Bombay. The group experienced, and finally discarded, all the false hopes and promises of Western originated forms of development: ploughs that ploughed too deep, irrigation systems that lowered water tables, fertilizers and pesticides which managed the earth and became so expensive that poorer farmers were dispossessed. Instead they learnt from the adivasai, or tribal people, who have nurtured or been nurtured by foresets for millennia, ways of applying popular knowledge to contemporary problems. This book is a combination of Pereira's record of achievement of sustainable livelihoods and an account of the farm and its effect on the India around it by a leading British journalist. Originally published in 1991
Plantations are playing an increasingly important part in the development and the economies of the South. Plantation Politics is the first book to examine their rationale and purpose, exposing the misconceptions and myths that have surrounded their role, and describing the contribution they can make to sustainable development. At their best, industrial plantations can become a major asset to local development by providing raw materials, infrastructure, employment, income and environmental and recreational services. At their worst, plantations, usually imposed from a 'top-down' perspective and ignoring local needs, values and rights, have monopolized land in times of food shortage, degraded wild animal and plant populations, and destroyed habitats and landscapes. The contributors analyse the conditions appropriate for both simple and complex plantations, and the contributions each can make. Complex plantations, whether established from scratch or within natural forest, are more suitable in most cases, where they are subject to numerous different claims and needs. However, their ownership, management and silviculture present new challenges ? challenges which, without the carefully researched guidelines offered here, current policy and research may well be ill-equipped to take up. Caroline Sargent is the Director and Stephen Bass is the Associate Director of the Forestry Programme at the International Institute for Environment and Development. Originally published in 1992
The increasing world population is already causing intensive pressure on the most productive areas of the earth's surface. Hopes of improved living standards, if realised, will increase the pressure still further. The need to make better use of less productive areas thus becomes an urgent priority for human endeavour. In this respect, the arid and semi-arid regions of the world, occupying about 11,000 million acres or 4,500 million hectares, roughly one third of the tota11and surface, pose a constant challenge to man's technological skill. Though the possibilities of economic use of the real deserts are inherently limited, there remain vast areas with less extreme conditions where sustained research is capable of yielding substantial gains in pro ductivity. The problem is so large that it can be solved only by the coordinated efforts of workers in many countries and many disciplines. Forestry has a special part to play, not only for its potential value for wood production but still more for the beneficial effects of shelter from desiccating winds which so commonly accompany arid conditions. Mr. KA UL is to be congratulated on his initiative to pool the results of research on afforestation in arid zones in many parts of the world, and to present them in a single volume in the form of separate monographs."
This book has been compiled as a result of collaboration within the International Energy Agency Bioenergy Agreement. The aim of the book is to review the state of the art with respect to research and practical implications in order to aid the development of the technology for short rotation forestry production.
Public debate has stimulated interest in finding greater compatibility among forest management regimes. The debate has often portrayed management choices as tradeoffs between biophysical and socioeconomic components of ecosystems. Here we focus on specific management strategies and emphasize broad goals such as biodiversity, wood production and habitat conservation while maintaining other values from forestlands desired by the public. We examine the following proposition: Commodity production (timber, nontimber forest products) and the other forest values (biodiversity, fish and wildlife habitat) can be simultaneously produced from the same area in a socially acceptable manner. Based on recent research in the Pacific Northwest, we show there are alternatives for managing forest ecosystems that avoid the divisive arena of 'either-or' choices. Much of the work discussed in this book addresses two aspects of the compatibility issue. First, how are various forest management practices related to an array of associated goods and services? Second, how do different approaches to forest management affect relatively large and complex ecosystems?
This book volume has been divided into three sections and contains a total of 23 chapters. Section A contains eleven chapters covering topics such as studies of embryo development and cell biology of white spruce, proliferative somatic embryogenesis in woody species, somatic embryo germination and desiccation tolerance in conifers, performance of conifer somatic seedlings, apoptosis during early somatic embryogenesis, water relation parameters in conifer embryos, image analysis of somatic embryos, somatic embryogenesis in woody legumes, cold storage and crypreservation, and commercialization of plant somatic embryogenesis. Section B comprisis six chapters dealing with angiosperm woody plants such as somatic embryogenesis in myrtaceous plants, Laurus nobilis, Simarouba glauca, Magnolia spp., Juglans cinera, and somatic embryogenesis and evaluation of variability in somatic seedlings of Quercus serrata by RAPD markers. The chapters contained in Section C are focussed on somatic embryogenesis in gymnosperms, including Pinus patula, Encephalartos, Picea wilsonii, Pinus banksiana, hybrid firs, and Taxus. All the mansucripts have been peer reviewed and revised accordingly to improve the quality of these chapters. The final manuscripts were submitted as camera- ready to publication, and editors had no opportunity to go through them again before the final printing. Authors were advised to prepare final camera-ready manuscripts carefully to avoid any mistakes. Therefore, editors are not respon- sible for mistakes, if any, in this book volume. We are grateful to all the book chapter contributors for submitting their manuscripts in time, and to the reviewers for giving their free time to review the manuscripts.
Intended for development planners and administrators, energy planners, environmentalists, foresters and conservationists, this book provides a survey of the current, and likely future extent of, biomass energy shortages in Sri Lanka and seeks to identify the most appropriate means by which these might be addressed. Biomass accounts for roughly two-thirds of Sri Lanka's primary energy consumption, and long-term supply capability is being undermined by a fast and accelerating rate of deforestation. The book draws out the lessons to be learned in other parts of the world from Sri Lanka's experience.
Changing environmental conditions substantially affect genetic variation and its dynamics in forest ecosystems and various systems of plantations. In response to these challenges, the present book focuses on the response to stress in terms of case studies which address physiological and genetic characters as well as various metric traits. Furthermore a choice of studies is presented which refers to diversity and geographic variation of various species and site conditions, respectively. In addition, genetic resources are characterised and a variety of studies is compiled which address reproduction and migration as well as management aspects. Finally, a set of studies is presented which focus on forest tree breeding with respect to uncertain climatic futures.
Diverse as they are in their histories and in the organization of their forest sectors, most Nordic countries have this in common: their economies and cultures are substantially based on the utilization of various forest resources. This book explores Nordic forest futures and presents research results that form part of a scientific foundation for considering how to balance the functions of forests. It is particularly concerned with global trends that may affect the future use of boreal forests. Chapters investigate inter-alia the growing world population and the expected economic growth in countries with huge populations, and assess the resulting pressure on all land-based resources. Authors examine the urgent need for solutions to the energy crisis, consider worrying climate scenarios and provide a global outlook on bioenergy futures. Readers will discover how these developments will and must influence long-term strategic decisions on the future use of Nordic forests. The challenges and possible responses for future forest governance and forestry issues emerge, as the chapters go on to consider the multiple pressures in particular on the Swedish Forestry Model, among other themes. "By bringing together a distinguished group of internationally renowned scientists representing a diverse set of disciplines covering political science, geography, rural development, forest economics, history, and geo-sciences, this book constitutes an exceptionally profound and thoughtful futures study." - Alexander Buck, Executive Director, International Union of Forest Research Organizations (IUFRO)
Get cutting-edge agroforestry research and data Deforestation and the rampant use of fossil fuels are major contributors to increases in atmospheric carbon dioxide and are enormous influences on global warming. Agroforestry systems and tree plantations can help mitigate the resulting climate change and degradation of biodiversity and accelerating climate change. Environmental Services of Agroforestry Systems addresses these global concerns with an essential collection of presentations on biodiversity and climate change from the First World Congress in Agroforestry (Orlando, Florida, 2004). Respected experts discuss the latest research and data on how agroforestry systems can help solve environmental problems through carbon sequestration and biodiversity conservation. Years ago, agroforestry's environmental benefits were mainly seen as being soil amelioration, erosion control, microclimate control, and the alleviation of the effects of drought in semiarid areas. Environmental Services of Agroforestry Systems goes beyond the regional considerations of years past to focus on the challenges of today's most pressing global environmental concerns. The contributors describe the latest research and concepts in agroforestry systems, reforestation efforts, soils, vegetation, and agriculture while reviewing their economic aspects. Incentives for reforestation and agroforestry are explored in detail. Each chapter is carefully referenced and includes tables to clarify ideas and data. Environmental Services of Agroforestry Systems addresses: advantages of mixed-species plantations tropical pasture and silvo-pastoral systems tropical forest ecosystem management research on the economic feasibility of various land-use systems socio-economic considerations of coffee-growing ecosystems agroforestry systems in Costa Rica Environmental Services of Agroforestry Systems is essential reading for researchers and scientists, as well as professionals in agroforestry, forestry, soils, global change, climate change, and environmental studies, educators, and graduate and undergraduate students.
Much of the world's forested land is dominated by mixed-species stands. Understanding the complex structure and dynamics of these mixtures is a necessary step in the process of formulating appropriate silvicultural systems for their management. David M. Smith, Professor Emeritus of Silviculture at Yale University, has devoted much of his career to the study of the structure, development, and silvicultural treatment of these kinds of stands. This volume is presented by Professor Smith's collegues to honor the contributions he has made to the field. It contains both reviews of past work and results of current studies of mixed stands: topics range from analysis of forest dynamics in unmanaged stands to studies of silvicultural systems applied to mixtures, with examples drawn from boreal, temperate, and tropical regions. Much of the work stresses the importance of understanding the characteristic growth patterns of individual species within mixed stands, and how species interactions shape developmental patterns.
This book is an outcome of a research project on "Sustainable Forestry and the Environment in Developing Countries." The project has been run by Metsantutki muslaitos METLA -the Finnish Forest Research Institute since 1987 and will be completed this year. A major output by this project has so far been a report in three volumes on "Deforestation or development in the Third World?" The purpose of our multidisciplinary research project is to generate new knowl edge about the causes of deforestation, its scenarios and consequences. More knowledge is needed for more effective, efficient and equitable public policy, both at the national and intemationallevels in supporting sustainable forestry in develop ing countries. Our project has specifically focused on 90 tropical countries as one group and on three subgroups by continents, as well as the three case study countries, the Philippines, Ethiopia and Chile. The University of Joensuu has been our active partner in the Philippine study. We have complemented the three cases by the analyzes of Brazil and Indonesia, the two largest tropical forest-owning countries. Some other interesting country studies were annexed to complement our book both by geography and expertise. The United Nations University, World Institute for Development Economics Research, UNUIWIDER in Helsinki Finland has also been partly engaged. Most of the results from its project on "The Forest in the South and North in Context of Global Warming" will, however, be published later in a separate book."
Tran Van Nao (Editor) The last decade has witnessed a seriously increasing incidence of forest fires in many countries. Substantial economic and ecological losses have been incurred, although the estimation of total damage This has been due to the lack assessment has often been inaccurate. of standardized methods for collecting data on fire occurrence and area burnt, as well as information such as the value of the vegetation destroyed and restoration costs, and the implications for recreation, tourism and other social activities. The Mediterranean region was initially considered one of the most vulnerable to forest fires because of its' dry climate and strong winds. No region is immune to forest fires, however, and damage has been especially severe in areas where pine is the predominant species. Although forest fires are normally considered a national problem, they become an international one when they occur in border area forests or when the ecological impacts are felt over long distances. The potential for forest fires exists in every country -unless it is a complete desert - and for this reason, there is a need to promote better understanding of the fires, and closer cooperation between countries in controlling them.
The Sustainable Forestry Handbook is widely considered to be the essential aid to understanding and implementing sustainable forest management. Providing a clear and concise guide to the practicalities of implementing international standards for sustainable forest management, this fully updated second edition covers new Forest Stewardship Council requirements, High Conservation Value Forests, clearer requirements on pesticides and developments in policy and forest governance. Aimed at forest managers, and employing extensive cross referencing and easy-to-understand illustrations, this highly practical handbook explains in clear terms what the standards require forest managers to do and how they might go about implementing them.
Large areas of the warm, humid tropics in Southeast Asia, the Pacific, Latin America, the Caribbean, and Africa are hilly or mountainous. Jackson and Scherr (1995) estimate that these tropical hillside areas are inhabited by 500 million people, or one-tenth of the current world population, many of whom practice subsistence agriculture. The region most affected is Asia which has the lowest area of arable land per capita. Aside from limited areas of irrigated terraces, most of the sloping land, which constitutes 60% to 90% of the land resources in many Southeast Asian countries, has been by-passed in the economic development of the region (Maglinao and Hashim, 1993). Poverty in these areas is often high, in contrast to the relative wealth of irri gated rice farms in lowland areas that benefited from the green revolution. Rapid population growth in some countries is also exacerbating the problems of hillside areas. Increasingly, people are migrating from high-potential lowland areas where land is scarce to more remote hillside areas. Such migra tion, together with inherent high population growth, is forcing a transforma tion in land use from subsistence to permanent agriculture on fragile slopes, and is creating a new suite of social, economic, and environmental problems (Garrity, 1993; Maglinao and Hashim, 1993)."
Woody plants provide many challenges to the tissue culturist. Although there are many excellent tissue culture books and manuals available, these are generally strongly biased towards herbacious crops. Consequently, they often do not pay sufficient attention to the problems that specifically apply to in vitro culture of tree species. Culture of the latter often poses problems which are either absent or of lesser significance when culturing herbacious species. When trees in the field are used as explant source, the problems can be especially severe. For example, the physiological condition of the explants is difficult to control because of variation in weather and biotic factors. Furthermore, it is often difficult to obtain explants free of contaminants from field grown trees. Lack of genetic uniformity and maturation are additional problems one often has to deal with when culturing tree cells or tissues. These problems are emphasized in this text. In vitro culture of trees is not viewed in isolation. It is considered in conjunction with breeding, traditional cloning and other common tree improvement techniques. The text discusses theoretical as well as practical aspects of the in vitro culture of trees.
Scientists and researchers from top labs around the world share
their expertise!
Scientists and researchers from top labs around the world share
their expertise!
Research and publications on the potato crop have burgeoned since the first edition of this book was published in 1978. However, the warm reception of the first edition suggested that it had a useful part to play in promoting the scientific basis for understanding and improving the yield and quality of the crop. Since the first edition was out of print and a second reprint would not have taken into account the contributions made by research over the intervening years, it became obvious that a complete revision was necessary. There was, in particular, a need to take account of the rapid extension of interest in the crop into climates and farming systems with which it has not been traditionally associa, ted. Those involved with the crop will be sadly aware that a number of contributors to the first edition are no longer with us. Their contribution to our knowledge of the crop will however be a permanent legacy of their achievement. I would like to thank all those who have contributed to the book for their willingness to cooperate in the difficult task of bringing their particular subject up to date. This is even more noteworthy for the pressure of time appears to be almost an order of magnitude higher than it was when the first edition was tackled
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