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Books > Professional & Technical > Agriculture & farming > Forestry & silviculture: practice & techniques
In recent years a startling policy innovation has emerged within
global and domestic environmental governance: certification systems
that promote socially responsible business practices by turning to
the market, rather than the state, for rule-making authority. This
book documents five cases in which the Forest Stewardship Council,
a forest certification program backed by leading environmental
groups, has competed with industry and landowner-sponsored
certification systems for legitimacy.
Pork continues to occupy an important position as a food source in affluent societies as well as in developing countries with slower economic growth. The growth of the world swine population continues at a faster rate than that of the human population, a reflection of the sustained demand for pork in all parts of the world. The technical basis for commercial production of swine was presented in our two earlier textbooks-Swine Production in Temperate and Tropical Environ ments, by Pond and Maner, 1974, and Swine Production and Nutrition, by Pond and Maner, 1984. In view of rapidly advancing technology and an appreciation for the systems approach in industry and agriculture, this third book has been restructured to provide the student and practitioner with an integrated concept of pork production. We have attempted to blend the fundamental principles from genetics, physiology, nutrition, and biotechnology into the modern concepts of systems analysis and simulation modeling. The objective is to create a teaching approach which empha sizes the integrated synthesis of biological with physical and environmental sci ences and economics. This approach is expected to provide an overall pork pro duction systems view that individual producers can adapt to their specific resources, needs, and goals. Our new co-author, Dr. Dewey Harris, has used his expertise and perspective on interacting systems to change the complexion of the book to fulfill this objective. In addition, Dr."
This book provides essential reading to anyone interested in projecting the future of either the forest products market and/or the forest resource conditions. It is aimed at policy makers, model builders, researchers and graduate students who are building or using forest sector models, as well as at forest industry managers and analysts. While focusing on a specific modeling system the US Timber Assessment models the authors highlight the general elements that might comprise a forest-sector market model of any country or region. Approaches to policy analysis are also general and equally applicable to both national and multi-national forest policy development outside the US particularly in relation to on-going efforts to formulate national programs of sustainable forestry. Darius Adams and Richard Haynes are widely recognized as leading experts in the forest sector modeling field.
During the 4th International Consultation on Forest Genetics and Tree Building, held in 1998 in Beijing, China, leading scientists were invited to review past achievements, to redefine the role of forest genetics and breeding in contemporary forestry, and to set priorities for future research and development. On the basis of the invited presentations, the volume summarizes the state of knowledge in various fields, such as the impact of forest management and of changing environmental conditions on genetic resources, and the value of genetic markers as indicators for adaptational potential, as well as the tasks of conservation. Detailed reports from the different continents provide a comprehensive diagnosis of the global situation of forest genetics and tree breeding research. The book offers not only an overview of contemporary trends and expected future developments, but also identifies current main problems in funding and cooperation. It may prove therefore useful not only for scientists, university lecturers and advanced students in the field of forestry, ecology and conservation biology, but also for decision makers and managers in companies and conservation organizations.
This book presents a synopsis, with an innovative approach, of abundance, types and conditions of work performed in the tropical plantation and natural forests. It covers work of formally and informally employed, and of own-account small-scale forest users, women and children. Activities in tree harvesting are analyzed, also on-site conversion by pitsawing, planting and pruning. The abilities of the workers and their efforts while fulfilling their tasks, resulting in performance and workload, are described with many examples of published studies. Influencing variables from organizational, technical and managerial sides are considered as much as included in the studies. The detailed descriptions demonstrate the methodical state of ergonomic research. For better understanding of the coverage the background of the development of forest work science is described. The lasting influence of Taylorism and the roles of ILO and FAO as well as NGOs, e.g. in certification, are pointed out.
This work analyzes vegetation and soils, and investigates the influence of climate change, insect pests, grazing pressure by sheep and reindeer, construction of roads and other consequences of increasing tourism in the Nordic mountain birch forests. An accompanying CD-ROM contains additional material, including tables, illustrations, and model presentations.
This comprehensive synthesis systematically covers the entire range of natural and managed oak forests in the highlands of tropical America. Originally, these forests were widely distributed, but largely through human impact large parts have disappeared and the remaining patches are under increasing threat. For the first time, aspects as diverse as the paleo-ecology, biogeography, stand structure and composition, biodiversity, population dynamics, ecosystem dynamics, fragmentation and recovery, conservation and sustainable use of Neotropical montane oak forests are treated in a coherent manner. Providing a thorough understanding of ecological patterns and processes that determine the structure and functioning of these magnificent forests, this volume can serve as a sound basis for sustainable forest management and biodiversity conservation in general.
Plant-driven volatile organic compound (BVOC) emissions play a
major role in atmospheric chemistry, including ozone and
photochemical smog formation in the troposphere, and they extend
the atmospheric lifetime of the key greenhouse gas, methane.
Furthermore, condensation of photo-oxidation products of BVOCs
leads to formation of secondary organic aerosols with profound
implications for the earth's solar radiation budget and climate.
Trees represent the plant life form that most contributes to BVOC
emissions, which gives global forests a unique role in regulating
atmospheric chemistry.
This Volume contains the papers presented by twenty-eight invited speakers at the symposium entitled, "Genetic Manipulation of Woody Plants," held at Michigan State University, East Lansing, Michigan, from June 21-25, 1987. Also included are abstracts of contributed poster papers presented during the meeting. That the molecular biology of woody plants is a rapidly expanding field is attested to by the large attendance and high level of enthusiasm generated at the conference. Leading scientists from throughout the world discussed challenging problems and presented new insights into the devel opment of in vitro culture systems, techniques for DNA analysis and manipulation, gene vector systems, and experimental systems that will lead to a clearer understanding of gene expression and regulation for woody plant species. The presence at the conference of both invited speakers and other scientists who work with nonwoody plant species also added depth to the discussions and applicability of the information presented at the conference. The editors want to commend the speakers for their well-organized and informative talks, and feel particularly indebted to the late Dr. Alexander Hollaender and others on the planning committee who assist ed in the selection of the invited speakers. The committee consisted of David Burger (University of California, Davis), Don J. Durzan (University of California, Davis) , Bruce Haissig (U. S. Department of Agriculture Forest Service), Stanley Krugman (U. S. Department of Agriculture Forest Service) , Ralph Mott (North Carolina State University), Otto Schwarz (Univer.sity of Tennessee, Knoxville), and Roger Timmis (Weyerhaeuser Company).
Felix qui potuit rerum cognoscere causas. Pub/ius Vergilius Mara Forests have long been one of mankind's most important natural re sources and not the least because forests are, if properly managed, re newable. They serve us in many different ways, but above all in pro viding us with wood, one of the most remarkable and useful of all natural materials. Reaction wood, compression wood in gymnosperms and tension wood in the arboreal angiosperms, serves the function of making it possible for trees to perform movements. In the ancient Ginkgo and in the conifers, the ability to form compression wood is of vital importance to each and every tree. Compression wood plays a crucial role in the regulation of tree form in these gymnosperms, and their arborescent habit probably depends on their ability to develop this tissue. Few forest and plantation trees are devoid of compression wood in their stem, and all of them have it in their branches. Unfortu nately, what is necessary and beneficial for the tree in this case is harmful to mankind, for compression wood is a very serious defect in both sawtimber and pulpwood. It is now almost 20 years since the last complete survey of compres sion wood was published, namely Arthur H. Westing's excellent review of this subject. My major objective in writing the present book has been to bring together in one single work everything that is currently known about compression wood."
This volume synthesizes and analyzes thirty years of hydrological research in the Danum Valley Conservation Area, a lowland dipterocarp rainforest in Sabah, Malaysia. Ian Douglas explores the role of water in the rainforest ecosystem, setting out the ecological, climatological and geological context of present-day hydrological processes, soil erosion and stream sedimentation. He emphasizes the role of extreme events and natural disturbances in sediment supplies and the evolution of drainage pathways and explains the pathways of rainfall and stream sediment. Douglas then explores the impacts caused by logging, the extreme pulses of sedimentation and the effects of log removal and logging road construction, examining the effects of major storms in the 20 years after tree harvesting. Methods of minimizing logging damage to soils and streams are discussed and the effects on flora and fauns are considered.
examines how the Adaptive Collaborative Management approach can be utilised to address global environmental issues by complementing global and national policies with community-based action and commitment. argues that the activation and the empowerment of local peoples is critical to addressing current environmental challenges. provide concrete examples showing how a bottom-up approach can function to enhance policies and development. will be of great interest to students, scholars and practitioners working in the fields of conservation, forest management, community development, natural resource management and development studies more broadly.
This volume is devoted to compiling recent advancements, methodological improvements, new processing techniques, integration methods and rigorous applications associated with conceptual techniques on the conservation and monitoring of forest resources for a scientific audience, with a focus on cases and applications in India. The primary objective of the book is to advance the scientific understanding of the recent trends and technological improvements in forest conservation, management and related research themes in forest resources and human-wildlife interactions. The book is organized into five sections: (I) Forest Conservation Ecology (II) Forest Conservation and Society (III) Forest Management (IV) Forest Monitoring using GIS and Remote Sensing and (V) Human Wildlife Conflicts. It covers various research themes related to forestry, wildlife, habitat fragmentation, forest management and human-wildlife conflict research, and therefore will be beneficial to a diverse range of researchers, scientific organizations, wildlife scientists, biologists, ecologists and planners in the fields of wildlife and forestry. The book will further be of use to post-graduates, PhD research scholars, professors, geospatial experts, modellers, foresters, agricultural scientists, biologists, ecologists, environmental consultants and big data compilers.
Agroforestry seeks to balance protection of forest resources, the exploitation of the ecosystem services that trees can contribute to agriculture and the role of agroforestry in diversifying the range of agricultural products and markets. This volume reviews the latest research on the role and implementation of main types of agroforestry, understanding and assessing the ecosystem services that agroforestry can deliver and techniques for optimising agroforestry practice. The book's main focus is on temperate agroforestry, but also reviews particular issues facing agroforestry in the tropics. The collection will be a standard reference for forestry and agricultural scientists in universities, government and other research centres in agroforestry
The benefits of agriculture's Green Revolution, characterized by high energy input, mechanization, fertilizers, pesticides and irrigation, are not available to millions in the developing world. The possible alternatives employing low energy input, smallness of scale, intensive use of labour and long term sustainability are the subject of this book.;The book includes overviews of current agricultural production systems and alternatives; demographics, mortality and population growth; soils, erosion and water availability; sustainable integrated agroforestry systems and behavioural adaptations.;It also explains why a quality environment is essential for future agricultural and economic development, proves that integrated resource management leads to sustainable and productive agriculture for development, shows that certain agroforestry techniques conserve soil, water, energy and biological resources while increasing food and fuel supplies and addresses the need for interdisciplinary and multidisciplinary research and training to implement sound resource management policies and programmes.
The aim of this book is to improve the understanding of forest dynamics and the sustainable management of forest ecosystems. How do tree crowns, trees or entire forest stands respond to thinning in the long term? What effect do tree species mixtures and multi-layering have on the productivity and stability of trees, stands or forest enterprises? How do tree and stand growth respond to stress factors such as climate change or air pollution? Furthermore, in the event that one has acquired knowledge about the effects of thinning, mixture and stress, how can one make that knowledge applicable to decision-making in forestry practice? The experimental designs, analytical methods, general relationships and models for answering questions of this kind are the focus of this book. Given the structures dealt with, which range from plant organs to the tree, stand and enterprise levels, and the processes analysed in a time frame of days or months to decades or even centuries, this book is directed at all readers interested in trees, forest stands and forest ecosystems. This work has been compiled for students, scientists, lecturers, forest planners, forest managers, and consultants.
Has anyone today any conception of the grandeur, the extent, the million board feet a day production...the entire meaning of the forests of the Pacific Northwest-the "Big Woods"? The photographs alone in this absorbing book will instantly transport the reader into this former world. Here was the greatest stand of Douglas fir timber in existence and here was labor for the Poles, Finns, Swedes and Norskies lured out of the Midwest to convert the mammoth trees into the lumber that helped build the West Coast cities. Ralph Andrews presents a fascinating subject-the hope, courage and tragedy in the lives of the men and women who opened up the dense native forests or as the loggers said "brought daylight into the swamp," and converted the trees into the lumber which built the West Coast cities. Here are many nostalgic scenes showing high climbers, fallers balanced on high springboards, yokes of oxen and up to eight spans of horses dragging logs on skidroad, yokes of oxen and up to eight spans of horses dragging logs on skidroads to flumes, rivers and salt water, early donkey engines, railroads on steep grades, logging camps as well as devastating fires. Andrews' style of writing is graphic and spirited with strong emphasis on human interest.
Natural forests with thousands of years of ecological continuity are unrivalled as the treasure store of terrestrial biodiversity on Earth. And while there is currently no fully comprehensive inventory of the biota associated with any given forest, it is reasonable to assume that in conserving natural forests we can conserve the myriads of unnamed bacteria, fungi, insects, mites and nematodes that forests support. Drawing on diverse research from biodiversity experts around the world, this collection of papers reflects the diversity of forest types and forest issues that concern forest scientists globally. Forest types considered vary from savannah and tropical rainforests to the ancient oak forests of Poland; issues explored include the effects of logging, management practices, forest dynamics and climate change on forest structure and biodiversity. Given the range of topics covered, this book should be of particular interest to those involved in teaching forest conservation and management, as well as to researchers requiring an overview of current work in forest diversity, conservation and sustainable management. Reprinted from Biodiversity and Conservation 15: 4 (2006).
- Provides an up to date and comprehensive introduction to forest policy and governance in the US - Written in an accessible and engaging tone, with a strong emphasis on real-world case studies - Appropriate for undergraduate and postgraduate students on forestry, natural resources and environmental governance courses, as well as professionals working in the forestry industry
A compilation of concepts, biological relationships and procedures used to organize forested landscapes for combinations of goods, services and effects. Includes such management processes as investments for biological diversity, timber production, wilderness effects, recreational opportunities, esthetic values and habitats for endangered animals and plants.
The link between modern lifestyles and increasing levels of chronic heart disease, obesity, stress and poor mental health is a concern across the world. The cost of dealing with these conditions places a large burden on national public health budgets so that policymakers are increasingly looking at prevention as a cost-effective alternative to medical treatment. Attention is turning towards interactions between the environment and lifestyles.Exploring the relationships between health, natural environments in general, and forests in particular, this groundbreaking book is the outcome of the European Union 's COST Action E39 Forests, Trees and Human Health and Wellbeing, and draws together work carried out over four years by scientists from 25 countries working in the fields of forestry, health, environment and social sciences. While the focus is primarily on health priorities defined within Europe, this volume explicitly draws also on research from North America.
The origin of agroforestry practices-growing trees and shrubs with food and fruit crops and grasses is traditional and very old-but the science of agroforestry is new. Years of experience and experiments have shown that agroforestry as a land-use system is capable of yielding both food and wood and at the same time helps in conserving and rehabilitating the ecosystems. It has the capability to increase the overall productivity of land, maintain the nutrient balance in the soil, and above all, protect the nature. In the recent years, agroforestry has been recommended as a core subject in the curriculum of B. Sc. (Forestry) and B. Sc. (Agriculture) courses of agricultural universities. This book has been divided into ten chapters covering very comprehensive information on all aspects of agroforestry including history, concepts, systems classification, tree-crop interactions, planning and management, diagnosis and design, policy and projects, and propagation and management practices of multipurpose trees. This book is co-published with NIPA. Taylor and Francis does not sell or distribute its print and electronic editions in India, Pakistan, Nepal, Bhutan, Bangladesh and Sri Lanka.
This book provides an overview of the complex challenges and opportunities related to forest-based rural development in the tropics and subtropics. Applying a socio-ecological perspective, the book traces the changing paradigms of forestry in rural development throughout history, summarizes the major aspects of the rural development challenge in forest areas and documents innovative approaches in fields such as land utilization, technology and organizational development, rural advisory services, financing mechanisms, participative planning and forest governance. It brings together scholars and practitioners dealing with the topics from various theoretical and practical angles. Calling for an approach that carefully balances market forces with government intervention, the book shows that forests in rural areas have the potential to provide a solid foundation for a green global economy.
Dr Samuel Johnson, that famous eighteenth century lexicographer, said of oats 'A grain which in England is generally given to horses but in Scotland supports the people'. And presumably it was a Scotsman who riposted 'But what people and what horses ' That exchange encapsulates much of the history and role of oats - a cereal, once important as human food in parts of northern Europe but latterly used mainly as animal feed, especially favoured for horses. Although no longer a major food anywhere, oats still have a special and favoured niche in the cuisine of people living in the cooler and wetter regions of some parts of northern Europe. However, there is currently a resurgence of interest in the crop, because there is now considerable scientific evidence to support the view of Scotsmen who never doubted its dietary value. This book - very much an international effort, carefully orchestrated by Robert Welch - traces the origin, history and scientific progress which forms a sound basis for any further crop improvement and for broadening the utilization and marketing of oat products. Should rational consider ations lead to an increase in the importance of this cereal, I, for one, would be glad since I believe the rural landscape is the poorer for the increased rarity of golden fields of rippling oats which I used to be involved in harvesting."
The book offers comprehensive coverage of the important topics including: Flower structure and development Development and structure of male and female gametophytes Pollination biology, Fertilization and Self-incompatibility Endosperm, Embryo and Polyembryony Apomixis and Seed Biology |
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