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Showing 1 to 20 of 20 for “"Soil surveys"”.
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Evaluation of pre-taxonomy soil surveys
A 1954 soil survey of Bland County, Virginia, was evaluated to determine if remapping was required to meet current soil survey standards. Considerable savings of time and money may be realized if a complete remap was not required. Ten random transects were chosen to study soil landscape units which …
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Pedologic Based Subgrade Characterization for Low-Volume Pavement Design
Subgrade soils play an integral part in pavement performance. The nature and properties of subgrade soils must be considered in structural pavement design. Many highway agencies, particularly agencies that administer "local" or low-volume pavements, do not have the resources to conduct …
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The geography of fragipan soils in the eastern United States
The Soil Taxonomy definition for the brittle, compact subsoil horizons known as fragipans is vague and processes responsible for fragipan formation are poorly understood. Ambiguities in the fragipan definition have resulted in a lack of consistency in the interpretation of fragipan characteristics. …
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A suggested technique for the illustration and practical application of soil survey data to land development planning
Thesis (M.S.)--Michigan State University. Dept. of Resource Development, 1968
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SPECIFICATION DEVELOPMENT FOR THE USE OF DEVON COB IN EARTHEN CONSTRUCTION
… is presented to justify the selection of the soils used in the experimental program. The utilisation of `soil surveys' to inform selection of suitable cob building is found to be hindered by a lack of modernisation in terms of data presentation. A definitive test methodology is presented and …
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A procedure for measuring soil strength values in the field
Thesis (M.S.)--Michigan State University. Dept. of Agricultural Engineering, 1964
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Pollution of soils by lead and its uptake and pathways in the ecosystem.
… to the distribution and pathways of lead in the soil and plant ecosystem. Methods of conducting large area soil surveys and assessing the distribution of lead and other heavy metals including cadmium, copper and zinc are also examined. A survey was conducted over a 370 km2 area of North East …
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Infiltration controls in a tallgrass prairie at a hillslope scale
Infiltration capacity influences the ability of a soil to absorb and transmit water through macropores and micropores of the soil structure. Infiltration is primarily influenced by the soil type, which is dependent on a number of factors including parent material, climate, biological activity, and …
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Lowland savanna of southeastern Iowa: historical and modern vegetation patterns and implications for management
… a rare variant of savanna, occurring on alluvial soils, which lack quantitative data on their structure, composition, and restoration. The purpose of this thesis was to assess both historical and modern vegetation composition and structure of lowland savannas and to determine the success of recent …
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The Influence of dust deposition, carbonates and erosion on the formation of Clanwilliam heuweltjies
… to heuweltjies within a reasonable time frame. Soil surveys were conducted on 8 heuweltjies and at 2 inter-heuweltjie areas at depths of up to 0.9m. Textural analysis of soil samples collected from the 8 heuweltjies as well as an additional 11 heuweltjies was conducted. Bulk density was also …
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Remediation and restoration of ocean exposed cliff-top, in the context of Dounreay (Scotland) nuclear power plant decommissioning
… of bioreceptors at the surface, however, topsoil availability is limited.<br/>The cliff top site, and exposure to salt spray driven by strong winds, meant the identification of suitable vegetation communities for different areas could be crucial to its success. Vegetation and soil surveys …
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Development of Soil Survey Methods for Urban Areas
<p>Urban soils are the foundation of urban ecosystems and play a vital role in long-term urban sustainability and resiliency. Accurate soil surveys of urban areas should be done at higher resolution since extensive human activities often result in urban soil being highly disturbed and spatially …
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Reclamation of surface-mined forest land in the southern Appalachians
… in a manner which creates a productive forest soil. Surveys of tree plantings on land that was mined prior to enactment of the 1977 Surface Mining Control and Reclamation Act (SMCRA) have shown that trees will grow well where 1) minesoils are non-toxic, 2) minesoils are deep, loose, and …
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Brush packing as a restoration technology to restore grazing capacity after bush control in the North West Province
… function, which involves covering the degraded soil surface with woody branches and/or other organic material, mostly collected after the control of bush encroachment. This treatment on degraded and denuded soil surfaces simulates the protective cover effect of vegetation, along with various …
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The Non-defensive Medieval Moated Sites of the South-east Welsh March: A survey of the three pre-1974 counties of Breconshire, Radnorshire and Monmouthshire, in two volumes
… on moat construction is viewed alongside recent surveys relating to rainfall, drainage and relief within the surveyed counties. These factors along with relevant geological and soil surveys are shown in relation to the distribution of sites within the study area.<br/><br/>An analysis of the …
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Nutrient Cycling Between Litters and Soil after Fire in Native Woodland and Pinus radiata Plantations
Fire can change both the quantity and nature of soil organic matter during the event and can affect organic matter inputs after the event. These changes may affect the microbial biomass, nutrient availability and nutrient cycling, and may have flow on effects on soil carbon stocks and cycling. …
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A model of nitrate leaching from agricultural systems in the northern neck of Virginia
… Bay. VTCROPS simulates N fate and transport in a soil-plant-atmosphere continuum in a vertical slice between two crop rows, enabling consideration of nonuniform fertilizer placement and root growth patterns. VTCROPS models atmospheric, soil and crop subsystems. Atmospheric conditions (rainfall, …