Download or read book The Effect of Climate and Vegetation on Soil Reaction Percent Base Saturation and Organic Carbon Content of Some Sierra Nevada Soils written by Donnell Leroy Blosser and published by . This book was released on 1970 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Sensitivity of Selected Soils from the Sierra Nevada to Acidic Deposition written by Wen-cheh Liu and published by . This book was released on 1988 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to determine which soil characteristics should be used to assess soil sensitivity to acidic inputs. The neutralizing capacity and buffering range of some Sierra Nevada soils to acidic inputs were also evaluated. Samples of surface and subsurface horizons of soils in mountainous watersheds in California were used in this study. The soils were characterized through chemical, physical, mineralogical analysis. Analytical data for saturation extracts were used as input to GEOCHEM in order to assess the controlling minerals for Al activity. The major controlling minerals were gibbsite and jurbanite. Aluminum exchange and hydrolysis of minerals containing aluminum in the Sierra Nevada acidic forest soils might be important potential sources of pH buffering. A simple semiempirical model was developed to predict changes in soil pH. The model predictions using field data indicated a slow decrease in soil pH.-- Adapted from abstract.
Download or read book Potential Effects of Climate Change on Streamflow Eastern and Western Slopes of the Sierra Nevada California and Nevada written by Anne E. Jeton and published by . This book was released on 1996 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Compaction on the Hydrologic Properties of Forest Soils in the Sierra Nevada written by Peter H. L. Cafferata and published by . This book was released on 1983 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Survey written by and published by . This book was released on 1992 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Formation on a Granitic Parent Material in a Frigid Xeric Climatic Regime written by Susan Eileen Hoffman and published by . This book was released on 1973 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Controls on the Fate Structure and Function of Dissolved Organic Carbon and Nitrogen in Three California Soils written by Sarah Lynn Pittiglio and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding how changes in climate and the geographical distribution of terrestrial ecosystems alter the composition, concentrations, and movement of dissolved organic carbon (DOC) and nitrogen (DON) within the soil profile has important implications for soil nutrient fluxes, carbon (C) sequestration and water quality. A series of field and laboratory experiments evaluated how temperature, incubation time and litter source influenced the chemical composition of DOC and how differences in composition influenced DOC and DON biodegradation dynamics and adsorption to the mineral soil. The sites included a California grassland, oak woodland and mixed conifer stand. Reciprocal transplants of litter and soil from all sites were installed at each field location. At these sites, leachate was collected during two rainy seasons. Measured levels of DOC, DON and SUVA 254 differed significantly with litter origin and or soil type. Concentrations of DON in leachates from the conifer site soil were significantly lower than those from the other soils, probably because the conifer soil had a high concentration of pedogenic Fe oxides which are known to strongly adsorb DON. After15 months of exposure to grass and oak surface litter at the field sites, soil from the conifer field site had significantly increased soil C, soil C:N and water extractable DOC. These increases indicate that the soils at the conifer site in the Sierra Nevada foothills could potentially store increased levels of soil C if grassland and oak woodland vegetation shift into this area. In the laboratory, leachate solutions were created by incubating litter from the three sites at 4, 20 or 30 °C for 5, 15 or 96 hrs and then characterizing the resulting solutions. Solutions created from the grass, oak and conifer surface litter did not significantly vary in total DOC and DON concentrations, but were significantly different in chemical composition. 13C nuclear magnetic resonance (13C-NMR) spectroscopy indicated that solutions generated from grass litter had lower aromatic C, carboxylic acid C and higher heteroaliphatic C, relative to the oak and conifer DOC. DAX-8 resin fractionation of the solutions revealed that DOC from grass litter had a larger portion of hydrophilic DOC as well. Distinctive peaks associated with lignin molecules were stronger in oak and conifer DOC spectra and increased with incubation time. Temperature was positively correlated with higher DOC and DON concentrations and was negatively correlated with aliphatic, anomeric and aromatic C concentrations. Biodegradation of DOC correlated positively with labile compounds in the hydrophilic DOC fraction, such as heteroaliphatic C and negatively correlated to aromatic C. Therefore, biodegradation was highest for grass DOC. Adsorption of DOC was positively correlated to heteroaliphatic C and negatively correlated with aromatic C. In the A horizon, increasing temperature enhanced both adsorption and biodegradation. Adsorption was the dominate fate of DOC in the A horizon. However, biodegradation was the primary fate of DOC after exposure to both A and B horizon soil inoculum. While most biogeochemical models rely on net primary productivity to predict future C stocks in above and belowground biomass, the short-term experiments in this study suggest that temperature, litter source and soil type all have important roles in altering soil C and N biogeochemistry and soil C sequestration. These factors should be taken into consideration when modeling the effects of temperature and changing ecotonal boundaries among grasslands, oak woodlands and conifer ecosystems in the Sierra Nevada under changing climatic conditions.
Download or read book Soil Survey of San Joaquin County California written by Michael A. McElhiney and published by . This book was released on 1992 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Influencing the Organic Carbon and Nitrogen Levels in California Soils written by Frank Frederick Harradine and published by . This book was released on 1954 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Climate and Vegetation on Soil Properties and Processes at Kyle Canyon Nevada written by Ronald G. Amundson and published by . This book was released on 1988 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Soils written by John Gerrard and published by Routledge. This book was released on 2014-05-01 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Soil provides a comprehensive and engaging introduction to soils and the workings of soil systems. This text is the only one of its kind to provide an attractive, lively and accessible introduction to this topic. Featuring learning tools within each chapter, such as summaries, essay questions and guides for further reading, the text is also highly illustrated with useful tables, boxes and figures. Covering all key areas of study at an introductory level, subjects covered include: · Soil properties · Soil processes · Controls on soil formation · Soil classification · World soils · Soil patterns · Soil degradation.
Download or read book Simulation of nutrient loss from soils due to rainfall acidity written by J. O. Reuss and published by . This book was released on 1978 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Nevada Soils written by Nathaniel E. Wilson and published by . This book was released on 1897 with total page 40 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 Agronomy Abstracts written by and published by . This book was released on 1986 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of the annual meetings of the American Society of Agronomy; Soil Science Society of America; Crop Science Society of America ( - of its Agronomic Education Division).
Download or read book Survey of Soil Map Unit Sensitivity to Acid Deposition in the Sierra Nevada California written by Timothy A. Reilly and published by . This book was released on 1990 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Carbon Measurement and Modeling in Forest and Savanna Ecosystems of the Sierra Nevada written by Jianwu Tang and published by . This book was released on 2003 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
