Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Redoximorphic Feature Formation In Saline And High Ph Hydric Soils full books in PDF, epub, and Kindle. Read online Redoximorphic Feature Formation In Saline And High Ph Hydric Soils ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (787 download)
Download or read book Redoximorphic Feature Formation in Saline and High PH Hydric Soils written by and published by . This book was released on 1999 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Clausnitzer
Publisher :
ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.:/5 (454 download)
Download or read book Hydric Soils in Eastern Oregon Temporary Pools written by David Clausnitzer and published by . This book was released on 2000 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two types of temporary poois, known as playas, occur in semiarid southeast Oregon. Vegetated upland playas are found in the High Lava Plain province; barren alkaline-saline playas are found in the Basin and Range province. Both types become ponded in most years, but they often lack redoximorphic features indicative of hydric soils. We studied the morphology, hydrology, temperature, chemistry, redox potentials, and vegetation in one pool of each type to elucidate processes of soil genesis, to determine if the soils are hydric soils, and to evaluate relevant field indicators of hydric soils. We collected data for 3 years from piezometers, Pt electrodes, and thermocouples installed at several depths at monitoring sites within and around the pools. Chemical and physical parameters of soil and water samples were analyzed. Plant species were identified and their cover estimated. The upland playa was ponded annually but never exhibited subsurface saturation. Its soils were hydric, meeting the hydric criteria for hydrology, redox potential, and temperature. Redox potentials indicated an anaerobic soil environment, but they were never low enough to significantly reduce iron. Depleted matrices and soft Fe-Mn concentrations were present; soft concentrations were too small and inconspicuous to meet the criteria of any current hydric indicators. We propose new indicators based on observed morphological features. Vegetation, soils, and hydrology at this site indicate great similarity with vernal pools in northern California. The pool meets all criteria for classification as a jurisdictional wetland. Effects of current management on the ecology of these pools is not known. The alkaline-saline playa was ponded annually and also saturated at depth. Its soils were hydric, but low soil organic carbon content, low soil Fe-Mn content, high pH, and redox potentials above the thresholds for Fe and Mn reduction suppress formation of hydric soil morphological indicators. Fe-Mn nodules, found throughout the profile, are probably not formed by redox processes. We propose that the limit of greasewood encroachment onto the playa be used as a field indicator of the boundary between hydric and non-hydric soils.
Author : Michael J. Vepraskas
Publisher : CRC Press
ISBN 13 : 1439898006
Total Pages : 523 pages
Book Rating : 4.4/5 (398 download)
Download or read book Wetland Soils written by Michael J. Vepraskas and published by CRC Press. This book was released on 2016-04-21 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Major Revision of the Previous EditionWetland Soils: Genesis, Hydrology, Landscapes, and Classification, Second Edition contains 11 new chapters and additional updates written by new authors with a broad range of related field and academic experience. This revised work augments the previous material on wetland functions and restorations, while ma
Author : Ryan Scott Mersmann
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (69 download)
Download or read book Relating the Expression of Soil Redoximorphic Features to Soil Texture, PH, and Cation Exchange Capacity written by Ryan Scott Mersmann and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Three laboratory studies were performed to elucidate the influence of soil texture, pH, and cation exchange capacity (CEC) on the concentration of ferrous Fe in soil solution and the resulting expression of soil redoximorphic features. The objectives were: 1) assess the buffering effects of CEC on ferrous Fe concentration in soil solution, 2) evaluate the effects of pH on the concentration of ferrous Fe in soil solution, and 3) observe the expression of redoximorphic features in soils with varying texture and CEC. The studies concentrated on seasonally wet soils from the Texas Gulf Coast Prairie. Selected soils included Alfisols and Vertisols with characteristics ranging from coarse-loamy to very-fine in texture, strongly acidic to neutral in soil reaction, and siliceous, mixed, and smectitic in mineralogy. The soils included the Pledger clay microlow (acidic, fine-textured), Pledger clay microhigh (neutral, fine-textured), China clay (acidic, fine-textured), Cieno loam (acidic, fine-loamy), Orelia sandy clay loam (neutral, fine-loamy), Gessner fine sandy loam (acidic, coarse-loamy), and Orelia fine sandy loam (neutral, coarse-loamy). The studies provided the following information: 1) fine-textured soils with higher CEC contained more ferrous Fe in solution, 2) ferrous Fe concentrations in the acidic fine-loamy and coarse-loamy soils were higher than the neutral soils for the same textural class, 3) acidic and neutral fine-textured soils contained more ferrous Fe in solution than the remaining soils, 4) the highest percentage of redox concentrations was observed in the acidic, fine-textured soil, 5) the acidic fine-loamy and coarse-loamy soils exhibited a greater percentage of Fe depletions, and 6) a higher percentage of redox features were observed by micromorphic analysis (i.e., point counts under a binocular stereoscopic microscope) than by macromorphic descriptions. This research showed that differing soil characteristics affect the reductive dissolution and translocation of Fe, and subsequent formation of redox features.
Author : Michael J. Vepraskas
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.F/5 ( download)
Download or read book Aquic Conditions and Hydric Soils written by Michael J. Vepraskas and published by . This book was released on 1997 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ralph W. Tiner
Publisher : CRC Press
ISBN 13 : 1315357070
Total Pages : 588 pages
Book Rating : 4.3/5 (153 download)
Download or read book Wetland Indicators written by Ralph W. Tiner and published by CRC Press. This book was released on 2016-12-19 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understand the current concept of wetland and methods for identifying, describing, classifying, and delineating wetlands in the United States with Wetland Indicators - capturing the current state of science's role in wetland recognition and mapping. Environmental scientists and others involved with wetland regulations can strengthen their knowledge about wetlands, and the use of various indicators, to support their decisions on difficult wetland determinations. Professor Tiner primarily focuses on plants, soils, and other signs of wetland hydrology in the soil, or on the surface of wetlands in his discussion of Wetland Indicators. Practicing - and aspiring - wetland delineators alike will appreciate Wetland Indicators' critical insight into the development and significance of hydrophytic vegetation, hydric soils, and other factors. Features Color images throughout illustrate wetland indicators. Incorporates analysis and coverage of the latest Army Corps of Engineers delineation manual. Provides over 60 tables, including extensive tables of U.S. wetland plant communities and examples for determining hydrophytic vegetation.
Author : Michael Barbour
Publisher : Univ of California Press
ISBN 13 : 0520249550
Total Pages : 732 pages
Book Rating : 4.5/5 (22 download)
Download or read book Terrestrial Vegetation of California, 3rd Edition written by Michael Barbour and published by Univ of California Press. This book was released on 2007-07-17 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This completely new edition of Terrestrial Vegetation of California clearly documents the extraordinary complexity and richness of the plant communities and of the state and the forces that shape them. This volume is a storehouse of information of value to anyone concerned with meeting the challenge of understanding, managing or conserving these unique plant communities under the growing threats of climate change, biological invasions and development."—Harold Mooney, Professor of Environmental Biology, Stanford University "The plants of California are under threat like never before. Traditional pressures of development and invasive species have been joined by a newly-recognized threat: human-caused climate change. It is essential that we thoroughly understand current plant community dynamics in order to have a hope of conserving them. This book represents an important, well-timed advance in knowledge of the vegetation of this diverse state and is an essential resource for professionals, students, and the general public alike."—Brent Mishler, Director of the University & Jepson Herbaria and Professor of Integrative Biology, University of California, Berkeley
Author :
Publisher :
ISBN 13 :
Total Pages : 464 pages
Book Rating : 4.3/5 (91 download)
Download or read book SSSA Special Publication written by and published by . This book was released on 1979 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 632 pages
Book Rating : 4.:/5 (89 download)
Download or read book SSSA Special Publication Series written by and published by . This book was released on 1996 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Frank C. Watts
Publisher : ASA-CSSA-SSSA
ISBN 13 : 9780891188476
Total Pages : 104 pages
Book Rating : 4.1/5 (884 download)
Download or read book Soils of Florida written by Frank C. Watts and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard V. Pouyat
Publisher : Springer Nature
ISBN 13 : 3030452166
Total Pages : 306 pages
Book Rating : 4.0/5 (34 download)
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.
Author : Georges Stoops
Publisher : Elsevier
ISBN 13 : 0444635424
Total Pages : 1000 pages
Book Rating : 4.4/5 (446 download)
Download or read book Interpretation of Micromorphological Features of Soils and Regoliths written by Georges Stoops and published by Elsevier. This book was released on 2018-09-17 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interpretation of Micromorphological Features of Soils and Regoliths, Second Edition, provides researchers and students with a tool for interpreting features observed in soil thin sections and through submicroscopic studies. After an introduction and general overview, micromorphological aspects of regoliths (e.g., saprolites, transported materials) are highlighted, followed by a systematic and coherent discussion of the micromorphological expression of various pedogenic processes. The book is written by an international team of experts in the field, using a uniform set of concepts and terminology, making it a valuable interdisciplinary reference work. The following topics are treated: freeze-thaw features, redoximorphic features, calcareous and gypsiferous formations, textural features, spodic and oxic horizons, volcanic materials, organic matter, surface horizons, laterites, surface crusts, salt minerals, biogenic and pedogenic siliceous materials, other authigenic silicates, phosphates, sulphidic and sulphuric materials, and features related to faunal activity. The last chapters address anthropogenic features,archaeological materials and palaeosoils. Updates the first exhaustive publication on interpretation of micromorphological features, with some new chapters and with a larger number of additional references Covers related topics, making micromorphology more attractive and accessible for geomorphologists, archaeologists and quaternary geologists Includes thematic treatment of a range of soil micromorphology fields and broadens its applications Features input from a multi-disciplinary team, ensuring thorough coverage of topics related to soil science, archaeology and geomorphology
Author : U. S. Army Corps Of Engineers
Publisher :
ISBN 13 : 9781304110763
Total Pages : pages
Book Rating : 4.1/5 (17 download)
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:
Author : Committee on Characterization of Wetlands
Publisher : National Academies Press
ISBN 13 : 0309587220
Total Pages : 329 pages
Book Rating : 4.3/5 (95 download)
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.
Author : American Society of Agronomy
Publisher :
ISBN 13 :
Total Pages : 518 pages
Book Rating : 4.:/5 (89 download)
Download or read book Annual Meetings Abstracts written by American Society of Agronomy and published by . This book was released on 2000 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251055212
Total Pages : 116 pages
Book Rating : 4.0/5 (552 download)
Download or read book Guidelines for Soil Description written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2006 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils are affected by human activities, such as industrial, municipal and agriculture, that often result in soil degradation and loss. In order to prevent soil degradation and to rehabilitate the potentials of degraded soils, reliable soil data are the most important prerequisites for the design of appropriate land-use systems and soil management practices as well as for a better understanding of the environment. The availability of reliable information on soil morphology and other characteristics obtained through examination and description of the soil in the field is essential, and the use of a common language is of prime importance. These guidelines, based on the latest internationally accepted systems and classifications, provide a complete procedure for soil description and for collecting field data. To help beginners, some explanatory notes are included as well as keys based on simple test and observations.--Publisher's description.
Author :
Publisher :
ISBN 13 :
Total Pages : 830 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2001 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
