Download or read book Local Soils Information Needed to Define the Root Zone in Process Models on the Gulf Coastal Plain written by Mary Anne Sword Sayer and published by . This book was released on 2002 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: We combined published information and our own experimental results from the Gulf Coastal Plain to evaluate how soil aeration and strength interact with loblolly pine root growth. Our results demonstrate that soil aeration and strength differ by soil series and year and are subject to vertical and horizontal spatial variation. Comparison of loblolly pine root phenology and seasonal redox potential indicates that oxygen is frequently limiting to new root growth. The strength of these soils may also restrict loblolly pine root growth. Physiological process models that predict southern pine productivity should apply accurate calculations of plant-available soil in simulations of potential root zone water storage and plant-available water. We propose a conceptual root zone submodel that predicts the volume of plant-available soil with soil aeration, strength, and water retention by horizon. Model parameters are components of the Natural Resources Conservation Service (NRCS) Soil Interpretation Record (SIR) database collected across the United States.

Download or read book Local Soils Information Needed to Define the Root Zone in Process Models on the Gulf Coastal Plain written by Mary Anne Sword Sayer and published by . This book was released on 2002 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Local Soils Information Needed to Define the Root Zone in Process Models on the Gulf Coastal Plain written by Mary Anne Sword Sayer and published by . This book was released on 2002 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report SRS written by and published by . This book was released on 2004 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Biennial Southern Silvicultural Research Conference written by and published by . This book was released on 2003 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report Southern Research Station written by and published by . This book was released on 2004 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corps of Engineers Wetlands Delineation Manual written by U. S. Army Corps Of Engineers and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Backpacker written by and published by . This book was released on 2007-09 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Backpacker brings the outdoors straight to the reader's doorstep, inspiring and enabling them to go more places and enjoy nature more often. The authority on active adventure, Backpacker is the world's first GPS-enabled magazine, and the only magazine whose editors personally test the hiking trails, camping gear, and survival tips they publish. Backpacker's Editors' Choice Awards, an industry honor recognizing design, feature and product innovation, has become the gold standard against which all other outdoor-industry awards are measured.

Download or read book Agrindex written by and published by . This book was released on 1981 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Circulars of Bureau of Soils written by and published by . This book was released on 1911 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Earth Resources written by and published by . This book was released on 1977 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Earth Resources written by and published by . This book was released on 1978 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International Aerospace Abstracts (IAA)

Download or read book Soils of the Atlantic and Gulf Coastal Plains Province written by United States. Department of Agriculture and published by . This book was released on 1911 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wetlands written by Committee on Characterization of Wetlands and published by National Academies Press. This book was released on 1995-09-20 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Wetlands" has become a hot word in the current environmental debate. But what does it signify? In 1991, proposed changes in the legal definities of wetlands stirred controversy and focused attention on the scientific and economic aspects of their management. This volume explores how to define wetlands. The committee--whose members were drawn from academia, government, business, and the environmental community--builds a rational, scientific basis for delineating wetlands in the landscape and offers recommendations for further action. Wetlands also discusses the diverse hydrological and ecological functions of wetlands, and makes recommendations concerning so-called controversial areas such as permafrost wetlands, riparian ecosystems, irregularly flooded sites, and agricultural wetlands. It presents criteria for identifying wetlands and explores the problems of applying those criteria when there are seasonal changes in water levels. This comprehensive and practical volume will be of interest to environmental scientists and advocates, hydrologists, policymakers, regulators, faculty, researchers, and students of environmental studies.

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1989-05 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1989 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managing Agricultural Greenhouse Gases written by Mark Liebig and published by Academic Press. This book was released on 2012-10-16 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global climate change is a natural process that currently appears to be strongly influenced by human activities, which increase atmospheric concentrations of greenhouse gases (GHG). Agriculture contributes about 20% of the world’s global radiation forcing from carbon dioxide, methane and nitrous oxide, and produces 50% of the methane and 70% of the nitrous oxide of the human-induced emission. Managing Agricultural Greenhouse Gases synthesizes the wealth of information generated from the GRACEnet (Greenhouse gas Reduction through Agricultural Carbon Enhancement network) effort with contributors from a variety of backgrounds, and reports findings with important international applications. Frames responses to challenges associated with climate change within the geographical domain of the U.S., while providing a useful model for researchers in the many parts of the world that possess similar ecoregions Covers not only soil C dynamics but also nitrous oxide and methane flux, filling a void in the existing literature Educates scientists and technical service providers conducting greenhouse gas research, industry, and regulators in their agricultural research by addressing the issues of GHG emissions and ways to reduce these emissions Synthesizes the data from top experts in the world into clear recommendations and expectations for improvements in the agricultural management of global warming potential as an aggregate of GHG emissions