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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 32 for “"soil formation"”.
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Behavior of trace elements in rock weathering and soil formation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1958.
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Capturing and Characterizing Soluble Organic Matter Dynamics in Soil Formation Processes
… organic matter (WSOM) extracted from soils and of DOM sampled from shallow groundwater wells. Quantification of WSOM carbon content and spectroscopic analyses were used to compare samples based on genetic horizon and to compare differences along gradients of lateral and vertical …
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Soil formation in Indian Mounds built from different parent materials in northeast Iowa
<p>http://www.worldcat.org/oclc/5503298</p>
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The Mechanism and Timescales of Soil Formation in the Hyper-arid Atacama Desert, Chile
… from surfaces where water is abundant, but their formation is poorly documented. This research is an in-depth exemplary work in the Atacama Desert in northern Chile to understand the soil formation in hyper-arid environments, as an analog for planetary surfaces such as the Mars. In detail, the …
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Artificial Soil Formation And Stabilization Of Material Cycles In Closed Ecological Systems For Mars Habitats
… to conduct a preliminary investigation for soil formation of NASA JSC Mars-1A Regolith Simulant in an environmentally closed ecosystem to simulate plant growth within these initial habitats, and the prospect of soil formation from a Mars parent material for agricultural purposes. The …
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Stratigraphy and Site Formation at the Sanders Site (45 KT 315), Kittitas County, Washinton
… Periods of landform stability are marked by soil formation. Sediments preserved on-site appear to contain a relatively complete record of the Holocene, whereas across the creek at 45KT726, the earlier Holocene sediments have been stripped away by fluvial processes. Periods of landform …
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An approach to studying soil-landscape relationships in Virginia
… methods and techniques were used to examine soil-landscape relationships for residual and colluvial soils of Virginia. Soil micromorphology indicated that although some BC and C horizons in the field appeared structureless, evidence of pedogenic process was observed. These were designated as …
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Bacterial communities in glacier forefields of the Larsemann Hills, East Antarctica : structure, development & adaptation
… habitats and new terrain is becoming exposed to soil formation and accessible for microbial colonisation. This study aims to understand the structure and development of glacier forefield bacterial communities, especially how soil parameters impact the microorganisms and how those are adapted to …
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Microbial Diversity in Young Volcanic Soils
Soil is an integral part of the global carbon cycle with a high capacity for storing carbon. Understanding the factors influencing carbon respiration is required to identify potential responses to changing climate. Icelandic soils have characteristics allowing for unique studies of soil formation …
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Integrating basic remote sensing, terrain analysis and geostatistical methods to generate spatially explicate continuous soil attribute maps for Fraser Experimental Forest
Hans Jenny's Factors of Soil Formation, a system of quantitative pedology (1941), concisely summarized and illustrated many of the basic principles of pedology utilized to date (Jenny, 1941). This state factor model became the backbone for soil survey research and production because it proposed …
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Quaternary landscape evolution, pedology, and geoarchaeology in central Texas.
… processes of river incision, deposition, and soil formation. This is the first study in central Texas focused on alluvial floodplain and terrace formation of the Brazos and Bosque rivers. Additionally, Buttermilk Creek provides a view of late Quaternary landscape evolution in central Texas …
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Surface Sorption Properties of Halophilic Archaea
… water-rock systems, sedimentary diagenesis, and soil formation. Archaea are ubiquitous in near-surface water-rock systems and numerous laboratory and field studies have demonstrated that Archaea can facilitate the formation and dissolution of minerals, potentially enhancing or inhibiting …
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Vegetation survey of Namibia: conceptualisation and implementation of a nation-wide vegetation survey serving practical land management needs
… shelter, erosion control and sediment retention, soil formation and nutrient cycling, waste treatment, gas and climate regulation, pollination, disturbance regulation and biological control {of, e.g., pests and diseases), genetic resources, and the provision of opportunities for recreational and …
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Ecological restoration of lead/zinc/copper mine tailings: Phytomanagement and amendment strategies to enhance substrate functionality and biomass production
… and must often be assisted with appropriate soil amendments. Amendments applied individually in greenhouse studies discussed herein revealed notable improvement in bioenergy crops growth only with biosolids treatments. Recalcitrant carbon amendments (biochar and humus) showed notable impact …
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Fluvial processes, beaver activity, and climate in the greater Yellowstone ecosystem and rock type control on hillslope morphology and soil development in the Sandia Mountains, New Mexico
… 3 explores the role of rock type in hillslope soil formation and slope morphology in the Sandia Mountains of New Mexico. Resistant rock types have a profound impact on slopes by increasing the amount of coarse colluvium that traps and preserves eolian material. Accretion of eolian material …
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Effects of Mica On Soil Properties For Embankment Construction
… part of the highway construction process, and soils from borrow pits are often used to construct these structures. The soil from these borrow pits is often characterized as needed, on a project by project basis, and is tested for the properties necessary for embankment design. As the upstate of …
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Scoping of Presence and Impacts of Tyre Wear Particles on Soil Systems
… research on their abundance in roadside soils—the primary sink of contamination—and their ecological effects on soil properties and terrestrial animals remains limited, calling for further investigation. In this study, Lufa 2.2 test soil and red topsoil sourced from Exeter were dosed with …
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A Hydropedological Approach to Describing Runoff Generation, Lateral Podzolization, and Spatial and Temporal Patterns of DOC in a Headwater Catchment
… a hydropedological framework, where similar soils are grouped together and considered to be representative of and developed by similar hydrologic and biogeochemical processes. In the first chapter, soil groups, called hydropedological units (HPUs) are found to be indicative of distinct water …
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Dynamic duty cycle mechnism for mobility in wirless sensor networks
… properties such as heat, pressure, light, soil formation, location, and others. Physical environment properties. Through receivers and transmitters, the sensor nodes send the data hop by hopto the sink node or base station, and these devices have a short-range and a very low frequency. …
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RECONSTRUCTING CLIMATE ON THE GREAT PLAINS FROM BURIED SOILS: A QUANTITATIVE APPROACH
… are rare in the region. Sequences of buried soils, however, are commonly preserved in eolian and alluvial sediments on the Great Plains and have the potential to enhance the region's paleoclimate record. This research presents a study of buried soils preserved in the Caddo Canyons of central …
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