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Books > Professional & Technical > Agriculture & farming > Forestry & silviculture: practice & techniques
Throughout the past few decades, the standard answer to the problem of low productivity in small private forests has been education. It has been assumed that the chief obstacle to "good" forestry has been lack of knowledge. But the stubborn persistence of the problem raises some doubts as to the efficacy of the remedy. In this book, first published in 1961, the author takes a sharper look at this problem. He tries to find out what has worked reasonably well, and what has not, and makes some suggestions as to what seems to offer the best prospects for the future. The Small Private Forest in the United States will be of interest to students of environmental studies, as well as to private landowners.
Losses of forests and their insect inhabitants are a major global conservation concern, spanning tropical and temperate forest regions throughout the world. This broad overview of Australian forest insect conservation draws on studies from many places to demonstrate the diversity and vulnerability of forest insects and how their conservation may be pursued through combinations of increased understanding, forest protection and silvicultural management in both natural and plantation forests. The relatively recent history of severe human disturbance to Australian forests ensures that reasonably natural forest patches remain and serve as 'models' for many forest categories. They are also refuges for many forest biota extirpated from the wider landscapes as forests are lost, and merit strenuous protection from further changes, and wider efforts to promote connectivity between otherwise isolated remnant patches. In parallel, the recent attention to improving forest insect conservation in harmony with insect pest management continues to benefit from perspectives generated from better-documented faunas elsewhere. Lessons from the northern hemisphere, in particular, have led to revelations of the ecological importance and vulnerability of many insect taxa in forests, together with clear evidence that 'conservation can work' in concert with wider forest uses. A brief outline of the variety of Australian tropical and temperate forests and woodlands, and of the multitude of endemic and, often, highly localised insects that depend on them highlights needs for conservation (both of single focal species and wider forest-dependent radiations and assemblages). The ways in which insects contribute to sustained ecological integrity of these complex ecosystems provide numerous opportunities for practical conservation.
The world continues to depend heavily upon a relatively small range of crops for food, fuel, fibre and industrial use, while many potentially good, economically acceptable alternatives exist. This book, which is the second in a series looking at underutilized crops, provides thorough details of those underutilized cereals and pseudocereals which are currently benefiting from research and others which have been neglected and deserve more research attention. Cereals and Pseudocereals considers in detail the potential for the following crops: quinoa, buckwheat, grain amaranth, triticale, fonio, intermediate wheatgrass and wild rice. Under the guidance of the International Centre for Underutilized Crops, the contents of this book have been drawn together by Professor Williams, who has wide research experience in the exploitation of new crops. The contents of this book will be of great interest and use to a wide range of people involved in work on the greater exploitation of currently underutilized crops, including upper level students in agricultural, plant and food sciences, researchers in development agencies and scientists working directly on improvement and exploitation of this group of crops.
This book, first published in 1967, presents a concise picture of the demand and supply trends of timber around the world. Zivnuska provides a keen analysis of plans, prospects, and opportunities in the areas covered, and an interesting look at the North American forest economy. This book will be of interest to students of environmental studies and forestry.
The 1970s saw unprecedented change in the laws governing the activities of the Forest Service. This study focuses on the legislative process and the circumstances surrounding forest policy-making during the 1970s. Dennis C. Le Master draws on his Capitol Hill experience to point out the various forces that have worked to bring about the many changes in Forest Service law that occurred. He provides insightful commentary on and analysis of the interaction of events, personalities, and policies as they influenced Forest Service law-making in the 1970s and thereby influence the agency today.
This book is a collection of chapters concerning the use of biomass for the sustainable production of energy and chemicals-an important goal that will help decrease the production of greenhouse gases to help mitigate global warming, provide energy security in the face of dwindling petroleum reserves, improve balance of payment problems and spur local economic development. Clearly there are ways to save energy that need to be encouraged more. These include more use of energy sources such as, among others, manure in anaerobic digesters, waste wood in forests as fuel or feedstock for cellulosic ethanol, and conservation reserve program (CRP) land crops that are presently unused in the US. The use of biofuels is not new; Rudolf Diesel used peanut oil as fuel in the ?rst engines he developed (Chap. 8), and ethanol was used in the early 1900s in the US as automobile fuel [Songstad et al. (2009) Historical perspective of biofuels: learning from the past to rediscover the future. In Vitro Cell Dev Biol Plant 45:189-192). Brazil now produces enough sugar cane ethanol to make up about 50% of its transportation fuel needs (Chap. 4). The next big thing will be cellulosic ethanol. At present, there is also the use of Miscanthus x giganteous as fuel for power plants in the UK (Chap. 2), bagasse (sugar cane waste) to power sugar cane mills (Chap. 4), and waste wood and sawdust to power sawmills (Chap. 7).
Genetics and Genomics of Populus provides an indepth description of the genetic and genomic tools and approaches for Populus, examines the biology that has been elucidated using genomics, and looks to the future of this unique model plant. This volume is designed to serve both experienced Populus researchers and newcomers to the field. Contributors to the volume are a blend of researchers, some who have spent most of their research career on Populus and others that have moved to Populus from other model systems. Research on Populus forms a useful complement to research on Arabidopsis. In fact, many plant species found in nature are - in terms of the life history and genetics - more similar to Populus than to Arabidopsis. Thus, the genetic and genomic strategies and tools developed by the Populus community, and showcased in this volume, will hopefully provide inspiration for researchers working in other, less well developed, systems.
In 1996 a major six-year research programme, 'Economic Optimisation of Multiple-Use Forestry and Other Natural Resources' was implemented at Department of Economics and Natural Resources, The Royal Veterinary and Agricultural University (KVL), Copenhagen. The research is funded by KVL; The Danish Agricultural and Veterinary Research Council; The Danish Research Academy; The Danish Forest and Landscape Institute; The Danish Forest and Nature Agency; and The Danish Environmental Protection Agency. The overall objective of the research programme is to enhance the economic theory of sustainable multiple-use forestry and landscape management planning. Emphasis is on decision-making ! management planning from an economic point of view, the basic criterion being rationality as implemented by application of Operations Research methods with regard to sustainable and multiple use of forests and other natural resources in the landscape. The research programme benefits from collaboration agreements with University of California at Berkeley, Department of Agricultural and Resource Economics, and Oregon State University, Department of Forest Resources. As part of the research programme, a second international conference and workshop was held 6 - 12 August, 1998 at KVL, with the title: '2nd Berkeley-KVL Conference on Natural Resource Management -Design and Implementation of Multiple-Use Management'. This event was financed by The Danish Research Academy. Some of the papers presented were selected for peer-reviewing and subsequent publishing. The outcome is the present book in which no paper has been previously published.
Boreal forests form Earth's largest terrestrial biome. They are rich in ecosystem and landscape diversity, though characterized by relatively few plant species, as compared to other forested regions. The long term viability and sustainability of boreal forests is influenced by many factors. They are subject to interruptions at intervals by large-scale natural disturbances, and increasingly by human activities. Boreal ecosystem development is typically a slow process; hence rapid changes in the global environment may invoke complex responses. Many industrial nations border, or lie within, boreal regions, deriving much of their economic wealth and culture from the forests. The response of boreal forests to changes in the global environment - whether caused by direct human activity or by indirect changes such as the anticipated changes in climate - are therefore of considerable international interest, both for their policy implications and their scientific challenges. This book which contains almost 50 peer-reviewed papers from a world-wide group of experts assembled under the auspices of IBFRA, the International Boreal Forest Research Association, covers topics which will stimulate further research and the development of constructive policies for improved management and conservation of global boreal forest resources.
Plantations of a wide range of tree species have assumed an important place in our world, providing wood for industry, fuelwood and animal fodder, protection from adverse environments and for the soil, as well as amenity and aesthetically pleasing landscapes. silvicultural knowledge of this particular branch of forestry first developed in Europe more than two centuries ago but in many parts of the world is still in a process of rapid evolution as more and more plantations are established to meet specific needs. The first exotic tree species to be established in plantations in my own country were planted more than a century ago and, likewise, New Zealand has a long history of planting. Both countries have developed a vigorous and innovative approach to plantation practice, soundly based initially on European experience but gradually modified to meet the challenges of new environments, new markets, and changed economic circumstances. This book on plantation silviculture was begun some years ago when the lack of a suitable undergraduate text for teaching purposes became apparent. The present text is aimed essentially at this audience. Although I have drawn heavily on the experience of Australia and New Zealand, the principles outlined are applicable anywhere in the world where plantations are being grown and tended, from the United States and Scandinavia to India, South Africa or Brazil. The text should also serve as a useful reference to advanced students and practicing foresters, with the reference list providing an introduction to the literature on this subject.
Temperate forests cover large areas of Europe and perform a number of important functions such as the regulation of energy and matter, production of wood and other resources, and conservation of biodiversity and habitats; they also have special signi?cance in social and cultural contexts. Initiated in 1960s, the ?rst International Biological Program (IBP) focused on ''the biological basis of productivity and human welfare. '' As the German contribution to the IBP, ecosystem research has been carried out since 1966 in the Solling area (Ellenberg H., Ecological Studies 2, 1971), an upland region in Northwest Germany. This study provided clear evidence that the stability of forest ecosystems was threatened by the high inputs of at- spheric pollutants. This promoted many interdisciplinary research programs which were coordinated by Prof. Dr. Bernhard Ulrich and the Forest Ecosystems Research Center of the University of Go]ttingen. This involved, in addition to the Solling site, the establishment of two other sites for long-term monitoring of ecosystem pro- ] cesses. The two contrasting sites were established in 1980 at Gottinger Wald on base-rich calcareous soil and in 1989 at Zierenberg on volcanic soil. These projects were funded initially by the Federal Ministry of Research and Technology (BMBF) as interdisciplinary projects under the titles: ''Conditions of Stability of Forest Ecosystems'' (1989-1993), and ''Dynamics of Forest Ecos- tems'' (1993-1998). The primary goal of these studies was to quantify the ecolo- cal condition of forests in a changing environment and element ?uxes."
Strong atmosphere-hydrology-biosphere feedbacks including human activity affect the rate and sign of changes in the Earth s system and have impacts on socioeconomic relationships. These processes are related to atmospheric circulation, climate and land use changes. Satellite-based and in situ monitoring systems have greatly increased our understanding of variations and changes occurring in the regional climate, atmospheric regime, land cover and water circulation. Coupled numerical models are invoked to describe features, which cannot be caught by observation systems or to predict a future state. This book summarizes the state-of-the-art researches on land cover, atmosphere and water resources of the Eastern Europe region, sets up priorities of major researches in these fields, outlines deficiencies in data and their processing, and develops recommendations for further research directions. Selected papers of the Non-Boreal Eastern Europe NEESPI meeting cover five topics:
This manual is designed for home gardeners and small commercial vegetable growers. The author provides information on the scientific concepts upon which vegetable growing is based and on practical methods for growing vegetables. Features include a chapter on the nutritional value of vegetables and sections on hydroponics, the economics of gardening, the Delaney clause, food additives, natural toxicants and organic vegetables. The author covers soil propagation and composition, identification of pests and the use of pesticides, plant growth, planting schedules, vegetable classification and the preservation of vegetables.
Dating back to the nineteenth-century transplantation of a latex-producing tree from the Amazon to Southeast Asia, rubber production has wrought monumental changes worldwide. During a turbulent Vietnamese past, rubber transcended capitalism and socialism, colonization and decolonization, becoming a key commodity around which life and history have revolved. In this pathbreaking study, Michitake Aso narrates how rubber plantations came to dominate the material and symbolic landscape of Vietnam and its neighbors, structuring the region's environment of conflict and violence. Tracing the stories of agronomists, medical doctors, laborers, and leaders of independence movements, Aso demonstrates how postcolonial socialist visions of agriculture and medicine were informed by their colonial and capitalist predecessors in important ways. As rubber cultivation funded infrastructural improvements and the creation of a skilled labor force, private and state-run plantations became landscapes of oppression, resistance, and modernity. Synthesizing archival material in English, French, and Vietnamese, Aso uses rubber plantations as a lens to examine the entanglements of nature, culture, and politics and demonstrates how the demand for rubber has impacted nearly a century of war and, at best, uneasy peace in Vietnam.
The European Forest Institute (EFI) has five Research and Development priority ar eas: forest sustainability, forestry and possible climate change, structural changes in markets for forest products and services, policy analysis, and forest sector informa tion services and research methodology. In the area of forest sustainability our most important activity has been the project "Growth trends of European forests," the re sults of which are presented in this book. The project was started in August 1993 under the leadership of Prof. Dr. Heinrich Spiecker from the University of Freiburg, Germany, and it is one of the first EFI's research projects after its establishment in 1993. The main purpose of the project was to analyse whether site productivity has changed in European forests during the last decades. While several forest growth studies have been published at local, re gional and national levels, this project has aimed at stimulating a joint effort in iden tifying and quantifying possible growth trends and their spatial and temporal extent at the European level. Debate on forest decline and possible climate change, as well as considerations re lated to the long term supply of wood underline the importance of this project, both from environmental and industrial points of view. Knowledge on possible changes in growth trends is vital for the sustainable management of forest ecosystems."
This book fills the gap in the available literature on modelling farm animal systems. This monograph has a broad and comprehensive coverage of ruminant systems and features the application of models in animal biology. It will be of great value to animal scientists, agricultural scientists, modellers and animal physiologists.
The protective function of forests for water quality and water-related hazards, as well as adequate water supplies for forest ecosystems in Europe, are potentially at risk due to changing climate and changing land-management practices. Water budgets of forest ecosystems are heavily dependent on climate and forest structure. The latter is determined by the management measures applied in the forestry sector. Various developments of forest management strategies, imposed on a background of changing climate, are considered in assessing the overall future of forest-water interactions in Europe. Synthesizing recent research on the interactions of forest management and the water regime of forests in Europe and beyond, the book makes an important contribution to the ongoing dialogue between scientists dealing with different scales of forest-water interactions. This collaborative endeavour, which covers geographic and climatic gradients from Iceland to Israel and from southern Spain to Estonia and Finland, was made possible through the COST Action "Forest Management and the Water Cycle (FORMAN)," which was launched in 2007 (http: //www.forestandwater.eu/). The book will be of particular interest to the research community involved in forest ecosystem research and forest hydrology, as well as landscape ecologists and hydrologists in general. It will also provide reference material for forest practitioners and planners in hydrology and land use.
Interest and initiatives in agroforestry education and training, as in other aspects of agroforestry development, have increased tremendously during the past decade. Coordination of such educational activities was initiated by the first international workshop on education in agroforestry organized by the International Council for Research in Agroforestry (ICRAF) in Decem ber 1982, at Nairobi, Kenya. Since then, agroforestry has been incorporated into the curricula of many educational and training institutions around the world. Moreover, several institutions have developed entire academic programs specifically in agroforestry. However, most of these activities are still isolated initiatives, without common strategies or philosophies. This second international agroforestry workshop was therefore planned to pro vide a forum for reviewing progress, sharing programs and experiences, and planning and coordinating future directions in agroforestry education and training. The main objectives were to review the on-going programs, to assess the scope of professional education and training in relation to the perceived needs of trained personnel, to recommend guidelines for further program development, and to establish networking among institutions and agencies involved in agroforestry education and training. These proceedings contain the keynote papers, regional/country presenta tions and conclusions and recommendations of the International Workshop on Education and Training in Agroforestry held at the University of Florida, Gainesville, USA in December, 1988. The strategy of the workshop was to facilitate focused discussion on identified issues by an invited group of world leaders in agroforestry education and training."
This volume presents a detailed analysis of the European market for fruit and vegetables and implications for European trade within the European Economic Community and for other countries which can benefit from participation in this trade. The book draws attention to the role of exporters, the Netherlands and the Mediterranean countries, the markets in West Germany and the United Kingdom and the market for developing countries. Whilst the level of exports of fruit and vegetables of the EEC and the United States of America is similar, imports to the EEC are considerably greater. The trade policy for fruit and vegetables of the EEC, the United States of America and Japan are discussed. There are several important export and import countries within the EEC which strongly influence the market. The author analyzes factors within these countries that explain the existing production or trade. The West German sector, which imports more fruit and vegetables than any other country, is examined. The United Kingdom is covered in the following chapter, relying heavily on domestic producers for vegetables, but looking overseas for much of its fruit. The Netherlands is the outstanding North Temperate exporter and has the efficient Dutch auction system which makes the country a major marketing and redistribution centre for both domestic and imported fresh produce. The Mediterranean exporters - Spain, Italy, Greece and Portugal - are covered next. Each of these countries has a different production and distribution system that leads to different export practices. The final chapter provides a review of global marketing opportunities for developing countries. The EEC protection, non-tariff as well as tariff, of fruit and vegetables is a handicap to the economic growth of developing countries, where fruit and vegetables frequently make an important contribution to exports. Developing countries are also disadvantaged in the production side. It is most important to improve and develop an infrastructure and the training of potential producers. It is encouraging that recent market surveys do show a promising potential market for developing countries.
USDA Forest Service Experimental Forests and Ranges (EFRs) are scientific treasures, providing secure, protected research sites where complex and diverse ecological processes are studied over the long term. This book offers several examples of the dynamic interactions among questions of public concern or policy, EFR research, and natural resource management practices and policies. Often, trends observed - or expected -- in the early years of a research program are contradicted or confounded as the research record extends over decades. The EFRs are among the few areas in the US where such long-term research has been carried out by teams of scientists. Changes in society's needs and values can also redirect research programs. Each chapter of this book reflects the interplay between the ecological results that emerge from a long-term research project and the social forces that influence questions asked and resources invested in ecological research. While these stories include summaries and syntheses of traditional research results, they offer a distinctly new perspective, a larger and more complete picture than that provided by a more typical 5-year study. They also provide examples of long-term research on EFRs that have provided answers for questions not even imagined at the time the study was installed.
It is our conviction that professional skill in forestry will develop more readily and more efficiently if forestry students are presented with a clear understanding of the im pact of the physical factors that both enhance and inhibit forestry activities. Part I is analytic, written as a basic text for undergradu ates in courses such as logging, transport, forest engineer ing and even forest management. It deals with the fundamen tals of technology in forestry as determined by the physical environment. The analytic approach serves two purposes, to bring about a clear understanding of the real world of the forest and to develop tools through which efficiency and productivity can be explored, understood and improved. The principal author of this volume was Prof. Ulf sundberg. Part II discusses in some detail a wide variety of practical problems encountered by foresters. It describes harvesting systems and the principles of management and control of forest operations. The influence of the forest on operations is described at length, the terrain, topography, forest soils as well as the engineering characteristics of trees and forest stands. It also considers the impact of oper ations on the forest. The principal author of this volume was Dr. Ross Silversides. Chapters 11, 12 and 13 were written by-Prof. Sundberg."
In this book I have collected many reports on the properties of bamboo. Since I started bamboo research in 1974, I have collected many publications on bamboo. However, in contacts with other researchers I became aware of the fact that several of these publications were unknown to them. Consequently their activities in research or in bamboo projects had to start at a lower level than if they had known some of these publications. Therefore, I discussed the need for a book like this with several colleagues, and I decided to start writing. In this book I present data on properties, as published by resear chers. Certainly it is not complete; e.g. the proceedings of the bamboo workshop in Cochin in November 1988 are not included; they arrived just too late to be taken into account. On the other hand, in writing this preface I realize I have forgotten my own thesis. I do apologize to any colleague whose relevant report is not taken into account as well. I like to express my feelings of respect to the board of my faculty: they allowed me to spend so much time on this book, and they gave a considerable financial support for the printing costs."
This book provides a fresh, updated perspective of the current status and perspectives in genetic improvement of a diverse array of tropical crops. The first part covers aspects which are relevant across crops, namely how to maximize the use of genetic information through modern bioinformatic approaches and how to use statistics as a tool to sustain increased genetic gains and breeding efficiency. The second part of the book provides an updated view of some seed-propagated crops, such as rice, maize and oil palm, as well as crops propagated through vegetative means such as sweet potato, cassava, banana and sugarcane. Each chapter addresses the main breeding objectives, markets served, current breeding approaches, biotechnology, genetic progress observed, and in addition a glimpse into the future for each of these selected and important tropical crops. |
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