Download or read book Harvest Intensity and Competing Vegetation Control Have Little Effect on Soil Carbon and Nitrogen Pools in a Pacific Northwest Douglas fir Plantation written by Erika J. Knight and published by . This book was released on 2013 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing demand for timber as well as current interest in the use of woody biomass for energy and chemical production may result in higher quantities of organic matter removal from plantation forests than currently occurs during harvesting. Two practices that can increase the yield of woody biomass from a harvest site are (1) the application of herbicides to control competing vegetation and improve crop tree growth and (2) the removal of branches and foliage (slash) in addition to the bole during harvest. The potential of these practices to change pools of soil carbon and nitrogen necessitates an evaluation of how management practices affect soil quality and carbon sequestration. In this study, soil carbon and nitrogen were measured to a depth of one meter in a 12-year-old Douglas-fir (Pseudotsuga menziesii) plantation at the Fall River Long-term Soil Productivity site in western Washington. The effects of vegetation control (bole-only harvest with versus without annual herbicide application, BO+VC vs. BO-VC) and harvest intensity (bole-only harvest with vegetation control versus total tree plus harvest with vegetation control, BO+VC vs. TTP+VC) on soil carbon and nitrogen were compared. Forest floor and mineral soil samples in six depth increments (forest floor, 0-15 cm, 15-30 cm, 30-45 cm, 45-60 cm, and 60-100 cm) were collected at 12 years following planting of seedlings. Carbon and nitrogen concentrations for the forest floor and the fraction of mineral soil

Download or read book Effects of Vegetation Control and Organic Matter Removal on Soil Water Content in a Young Douglas fir Plantation written by Warren D. Devine and published by . This book was released on 2006 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Biomass Removal and Vegetation Control on Douglas fir Foliar Nitrogen and Phosphorus in the Pacific Northwest USA written by Amelia M. Root and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As the demand for forest products increases, there is concern about the long-term impacts on site productivity. This study examines the foliar nitrogen (N) and phosphorus (P) of Douglas-fir (Pseudotsuga menziesii) trees in three sites – Fall River, Matlock, and Molalla – in the Pacific Northwest to determine the impacts of competing vegetation control and increased biomass removal. Needles samples were collected from randomly selected Douglas-fir trees in the winter of 2016. We analyzed the samples for nitrogen and phosphorus. Standard mixed-model ANOVA tests were run on the final linear models, followed by Tukey’s multiple comparison test to determine whether the treatments had an impact on the foliar nutrients. The impacts of increased biomass removal and vegetation control on foliar N and the N:P ratio were only significant in Matlock, the least productive site. There was no impact of increased biomass removal and vegetation control on foliar P within any of the sites. However, for each foliar nutrient, site was the most significant factor, indicating that the determination of the impact of each treatment must be site specific. Foliar nutrients were correlated with soil nutrient pools. The sites with larger soil N and P pools had higher foliar N and P concentrations, respectively. Fall River was the most productive site, and had the highest foliar N and P concentrations. Molalla had a smaller soil P concentrations, and had a slight foliar P deficiency (although not below critical deficiency levels). Matlock had a smaller N pool, and had the lowest foliar N values (although not below critical deficiency levels). Because the foliar N and P concentrations were not below critical deficiency levels at any of the sites, there was no immediate concern about the impacts of increased biomass removal. However, smaller soil and foliar nutrient pools at Matlock and Molalla suggested that these sites should be monitored to assure that there are no long-term impacts on soil productivity following intensive biomass removal. Our analysis of foliar nutrients at Matlock was complicated by the presence of scotch broom (Cytisus scoparius), an aggressive invasive species. Scotch broom is the dominant woody competitor at Matlock and out-competed the Douglas-fir saplings. Scotch broom fixes N, which enables it to outcompete Douglas-fir on N limited sites. Our data showed that scotch broom cover had a significant impact on foliar N. The plots with increased biomass removal had significantly higher scotch broom cover. Increased scotch broom cover led to increased foliar N, and although higher foliar N typically indicates growth, increased foliar N was associated with lower diameter at base height (DBH). The negative correlation indicates that although the trees were getting more N, they were also struggling to compete against the scotch broom. The Douglas-fir trees could not grow tall enough to shade out the scotch broom. The data suggested that productivity and commercial viability of the Matlock site requires the removal of invasive scotch broom.

Download or read book The Effects of Previous Nitrogen Fertilization on Productivity and Soil Nitrogen and Carbon Pools of Subsequent Stands of Douglas fir Forests in the Pacific Northwest written by Paul W. Footen and published by . This book was released on 2011 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest and Rangeland Soils of the United States Under Changing Conditions written by Richard V. Pouyat and published by Springer Nature. This book was released on 2020-09-02 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book synthesizes leading-edge science and management information about forest and rangeland soils of the United States. It offers ways to better understand changing conditions and their impacts on soils, and explores directions that positively affect the future of forest and rangeland soil health. This book outlines soil processes and identifies the research needed to manage forest and rangeland soils in the United States. Chapters give an overview of the state of forest and rangeland soils research in the Nation, including multi-decadal programs (chapter 1), then summarizes various human-caused and natural impacts and their effects on soil carbon, hydrology, biogeochemistry, and biological diversity (chapters 2–5). Other chapters look at the effects of changing conditions on forest soils in wetland and urban settings (chapters 6–7). Impacts include: climate change, severe wildfires, invasive species, pests and diseases, pollution, and land use change. Chapter 8 considers approaches to maintaining or regaining forest and rangeland soil health in the face of these varied impacts. Mapping, monitoring, and data sharing are discussed in chapter 9 as ways to leverage scientific and human resources to address soil health at scales from the landscape to the individual parcel (monitoring networks, data sharing Web sites, and educational soils-centered programs are tabulated in appendix B). Chapter 10 highlights opportunities for deepening our understanding of soils and for sustaining long-term ecosystem health and appendix C summarizes research needs. Nine regional summaries (appendix A) offer a more detailed look at forest and rangeland soils in the United States and its Affiliates.

Download or read book Response of Douglas fir Seedlings to Nitrogen Sulfur and Phosphorus Fertilizers written by M. A. Radwan and published by . This book was released on 1985 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Biomass written by T. Satoo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lord Rutherford has said that all science is either physics or stamp collecting. On that basis the study of forest biomass must be classified with stamp collecting and other such pleasurable pursuits. Japanese scientists have led the world, not only in collecting basic data, but in their attempts to systematise our knowledge of forest biomass. They have studied factors affecting dry matter production of forest trees in an attempt to approach underlying phYf'ical principles. This edition of Professor Satoo's book has been made possible the help of Dr John F. Hosner and the Virginia Poly technical Institute and State University who invited Dr Satoo to Blacksburg for three months in 1973 at about the time when he was in the final stages of preparing the Japanese version. Since then the explosion of world literature on forest biomass has continued to be fired by increasing shortages of timber supplies in many parts of the world as well as by a need to explore renewable sources of energy. In revising the original text I have attempted to maintain the input of Japanese work - much of which is not widely available outside Japan - and to update both the basic information and, where necessary, the conclusions to keep them in tune with current thinking. Those familiar with the Japanese original will find Chapter 3 largely rewritten on the basis of new work - much of which was initiated while Dr Satoo was in Blacksburg.

Download or read book Soil Mineralogy with Environmental Applications written by Joe Boris Dixon and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few books achieve a connection between scientifc theory and real world environmental problems, but this one does. Generous use of color images, exercises, and case studies make it friendly for the classroom or non-mineralogist. Discover crystallography, surface chemistry, mineral-solution equilibria, organic matter, and soil mineral analysis. The book includes a lengthy exploration of world-wide applications of mineralogy in soil taxonomy, tectonics, radionuclides, pesticides, enzymes, and more.

Download or read book Effects of Vegetation Control and Organic Matter Removal on Soil Water Content in a Young Douglas fir Plantation written by Warren D. Devine and published by . This book was released on 2006 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Real Gardens Grow Natives written by Eileen M Stark and published by Mountaineers Books. This book was released on 2014-09-24 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: CLICK HERE to download sample native plants from Real Gardens Grow Natives For many people, the most tangible and beneficial impact they can have on the environment is right in their own yard. Aimed at beginning and veteran gardeners alike, Real Gardens Grow Natives is a stunningly photographed guide that helps readers plan, implement, and sustain a retreat at home that reflects the natural world. Gardening with native plants that naturally belong and thrive in the Pacific Northwest’s climate and soil not only nurtures biodiversity, but provides a quintessential Northwest character and beauty to yard and neighborhood! For gardeners and conservationists who lack the time to read through lengthy design books and plant lists or can’t afford a landscape designer, Real Gardens Grow Natives is accessible yet comprehensive and provides the inspiration and clear instruction needed to create and sustain beautiful, functional, and undemanding gardens. With expert knowledge from professional landscape designer Eileen M. Stark, Real Gardens Grow Natives includes: * Detailed profiles of 100 select native plants for the Pacific Northwest west of the Cascades, plus related species, helping make plant choice and placement. * Straightfoward methods to enhance or restore habitat and increase biodiversity * Landscape design guidance for various-sized yards, including sample plans * Ways to integrate natives, edibles, and nonnative ornamentals within your garden * Specific planting procedures and secrets to healthy soil * Techniques for propagating your own native plants * Advice for easy, maintenance using organic methods

Download or read book The Global Forest Sector written by Eric Hansen and published by CRC Press. This book was released on 2013-12-04 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Changes in production, demand, supply, and trade patterns; the impact of green building and bioenergy on industry practices and policy infrastructure; and new economies with production advantages and large consumption bases all present challenges and opportunities in the forest sector. With contributions from leading experts in academia and professional organizations, The Global Forest Sector: Changes, Practices, and Prospects fills a gap in the literature that is preventing students, scholars, and policy makers from developing a timely, structured, big-picture view of forest sector business. In addition, the book reviews current thinking on a wide variety of business management issues in the forest sector. The book covers managing change in the global forest sector and the impact of globalization on forest users. It discusses markets and market forces, new products and product categories, and the influence of China and Russia. The book then examines the environmental paradigm, including environmental activism, sustainability, and the impact of green building and bioenergy. The book concludes with coverage of the role of information technology, corporate social responsibility, innovation, and next steps. Overall, this book helps readers both develop a bird’s eye view of the changes surrounding the forest sector as well as have a magnified view of numerous managerial issues associated with these changes. The content paints a picture of the current and changing forest sector including the state of forests, the nature of markets, the newly emerged patterns of stakeholder impact, and evolution of key business practices. It provides the foundation needed to develop the conservation-based economy required for future success in the global forest sector.

Download or read book Forest Stewardship Series 3 Forest Ecology written by and published by UCANR Publications. This book was released on 2007 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part 3 of the 24-part Forest Stewardship Series. The Forest Stewardship Series is a 24-part free online publication that provides owners of California forestland with a comprehensive source of information pertinent to the management and enjoyment of their lands. This information will help you formulate and implement strategies for achieving your personal goals as a landowner. The series provides an introduction to the lifelong study of forest stewardship that is part of owning forest property.

Download or read book Negative Emissions Technologies and Reliable Sequestration written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-04-08 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: To achieve goals for climate and economic growth, "negative emissions technologies" (NETs) that remove and sequester carbon dioxide from the air will need to play a significant role in mitigating climate change. Unlike carbon capture and storage technologies that remove carbon dioxide emissions directly from large point sources such as coal power plants, NETs remove carbon dioxide directly from the atmosphere or enhance natural carbon sinks. Storing the carbon dioxide from NETs has the same impact on the atmosphere and climate as simultaneously preventing an equal amount of carbon dioxide from being emitted. Recent analyses found that deploying NETs may be less expensive and less disruptive than reducing some emissions, such as a substantial portion of agricultural and land-use emissions and some transportation emissions. In 2015, the National Academies published Climate Intervention: Carbon Dioxide Removal and Reliable Sequestration, which described and initially assessed NETs and sequestration technologies. This report acknowledged the relative paucity of research on NETs and recommended development of a research agenda that covers all aspects of NETs from fundamental science to full-scale deployment. To address this need, Negative Emissions Technologies and Reliable Sequestration: A Research Agenda assesses the benefits, risks, and "sustainable scale potential" for NETs and sequestration. This report also defines the essential components of a research and development program, including its estimated costs and potential impact.

Download or read book The Law and Policy of Biofuels written by Yves Le Bouthillier and published by Edward Elgar Publishing. This book was released on 2016-05-27 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last twenty years the biofuels industry has developed rapidly in many regions of the world. This timely book provides an in-depth and critical study of the law and policies in many of the key biofuels producing countries, such as Brazil, China and the US, as well as the EU, and a number of other countries where this industry is quickly developing. Drawing on a range of disciplines, the contributors examine the roles of the public and private sectors in the governance of biofuels. They discuss topics such as sustainability and biofuels, and provide a critical review of regulatory regimes for biofuels. They conclude by proposing recommendations for more effective and efficient biofuel policies. Academics working in the area of renewable energy and students in environmental law will find this book to be of interest. It will also be of use to policy makers around the world looking to learn from various existing regimes. Contributors:G. Berndes, M. Brandão, A. Cowie, A. Cowie, K.S. Dahmann, J. De Beer, O. Englund, L.B. Fowler, A. Genest, L. Guo, M.-H. Labrie, Y. Le Bouthillier, E. Le Gal, O.J. Lim Tung, W.E. Mabee, F. Maes, L.D. Malo, M. Mansoor, P. Martin, H. Mcleod-Kilmurray, M.J.F. Montefrio, B.E. Olsen, R.O. Owino, P. Pereira De Andrade, M. Powers, A. Rønne, P.M. Smith, T. Smith, S. Soimakallio, I. Stupak, V.M. Tafur, A.R. Taylor

Download or read book Ecosystem Goods and Services from Plantation Forests written by Jürgen Bauhus and published by Earthscan. This book was released on 2010 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plantation forests often have a negative image. They are typically assumed to be poor substitutes for natural forests, particularly in terms of biodiversity conservation, carbon storage, provision of clean drinking water and other non-timber goods and services. Often they are monocultures that do not appear to invite people for recreation and other direct uses. Yet as this book clearly shows, they can play a vital role in the provision of ecosystem services, when compared to agriculture and other forms of land use or when natural forests have been degraded. This is the first book to examine explicitly the non-timber goods and services provided by plantation forests, including soil, water and biodiversity conservation, as well as carbon sequestration and the provision of local livelihoods. The authors show that, if we require a higher provision of ecosystem goods and services from both temperate and tropical plantations, new approaches to their management are required. These include policies, methods for valuing the services, the practices of small landholders, landscape approaches to optimise delivery of goods and services, and technical issues about how to achieve suitable solutions at the scale of forest stands. While providing original theoretical insights, the book also gives guidance for plantation managers, policy-makers, conservation practitioners and community advocates, who seek to promote or strengthen the multiple-use of forest plantations for improved benefits for society. Published with CIFOR

Download or read book Wildlife Habitats in Managed Forests written by Jack Ward Thomas and published by . This book was released on 1979 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: That is what this book is about. It is a framework for planning, in which habitat is the key to managing wildlife and making forest managers accountable for their actions. This book is based on the collective knowledge of one group of resource professionals and their understanding about how wildlife relate to forest habitats. And it provides a longoverdue system for considering the impacts of changes in forest structure on all resident wildlife.

Download or read book Ecosystems of California written by Harold Mooney and published by Univ of California Press. This book was released on 2016-01-19 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-anticipated reference and sourcebook for CaliforniaÕs remarkable ecological abundance provides an integrated assessment of each major ecosystem typeÑits distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and present, flora and fauna, aquatic and terrestrial, natural and managed. Each chapter evaluates natural processes for a specific ecosystem, describes drivers of change, and discusses how that ecosystem may be altered in the future. This book also explores the drivers of CaliforniaÕs ecological patterns and the history of the stateÕs various ecosystems, outlining how the challenges of climate change and invasive species and opportunities for regulation and stewardship could potentially affect the stateÕs ecosystems. The text explicitly incorporates both human impacts and conservation and restoration efforts and shows how ecosystems support human well-being. Edited by two esteemed ecosystem ecologists and with overviews by leading experts on each ecosystem, this definitive work will be indispensable for natural resource management and conservation professionals as well as for undergraduate or graduate students of CaliforniaÕs environment and curious naturalists.