Global ETD Search
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 21 for “"Urban Soil"”.
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Rehabilitation of Severely Compacted Urban Soil to Improve Tree Establishment and Growth
… development restricts tree growth by damaging soil structure and removing organic matter. Mechanical loosening and organic amendment may improve soil physical properties and tree establishment and growth. Effects of typical post-construction practice and improved methods of soil restoration on …
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Earthworms in the Urban Environment: Can Population Augmentation Improve Urban Soil Properties?
Urban forests perform essential ecological functions, and their performance is dependent on soil quality, which is often degraded by human activity. Because earthworms play a key role in soil health, augmenting earthworm populations in urban soils may improve tree performance. However, we know very …
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Assessment of Gross Accumulation and Leaching Characteristics of Heavy Metals in a Contaminated Urban Soil
The soils of East St. Louis contained many regions of elevated heavy metal concentrations although extreme heterogeneity was evident. In general, the western end of the city contained the most sites with anomalous levels of metals. However, the leaching experiments, although limited in scope, …
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The Influence of Urban Soil Rehabilitation on Soil Carbon Dynamics, Greenhouse Gas Emission, and Stormwater Mitigation
Global urbanization has resulted in rapidly increased urban land. Soils are the foundation that supports plant growth and human activities in urban areas. Furthermore, urban soils have potential to provide a carbon sink to mitigate greenhouse gas emission and climate change. However, typical urban …
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Induced Phytoextraction of Lead from Contaminated Urban Soil Through Manipulation of Rhizosphere and Plant Biogeochemical Functions in Switchgrass (Panicum virgatum)
<p>Contamination of soils with lead (Pb) continues to pose a risk to the health of humans especially in residential urban areas. Remediation of these soils is necessary to reduce the amount of Pb and alleviate risk to human health. Phytoextraction of Pb through chemically induced accumulation of Pb …
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Compost Application Practices for Revegetating Disturbed Soils
Urban development alters the physical and chemical properties of soil which presents challenges for vegetation establishment. Compost, when applied as a soil amendment, can help to ameliorate these challenges. In field trials, we evaluated the effect of surface-applied composts and standard …
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Quantifying Long-Term Hydrologic and NPS Pollutant Response in an Urbanizing Watershed
… NPS pollutant delivery characteristics in the urbanizing Cub Run basin are significantly different from adjacent non-urban basins. Higher annual NPS fluxes of total suspended solids (TSS), phosphorus (P), and nitrogen (N) in Cub Run are identified with periods of increased soil disturbance from …
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Trees in Urban Environments: How Soil Quality Impacts Tree Performance
… climate change and population growth. However, urban soil conditions can be unfavorable for tree growth. Street trees are widely known to suffer from poor soil quality, but there has been no comprehensive review of this topic so far. Clean soils can be transported from nonurban areas to support …
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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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Urban Landscape Management Practices as Tools for Stormwater Mitigation by Trees and Soils
As urban land expands across the globe and impervious surfaces continue to be used for constructing urban infrastructure, stormwater treatment costs and environmental damage from untreated stormwater will rise. Well designed urban landscapes can employ trees and soils to reduce stormwater runoff …
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Composting in the Urban Environment Utilizing Yard Waste and Food Waste in Fairfax County, Virginia
Urbanization alters the natural soil structure of landscapes. This has a negative impact on the environment. This degradation of the soil in the urban environment needs management practices that protect and restore the nutrient value in the soil. Soil is one of the most essential elements of …
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Assessment of Exceptional Quality Biosolids for Urban Agriculture
Biosolids have been used as soil conditioners and fertilizers in agriculture and mine land reclamation, but application of Exceptional Quality (EQ) biosolids to rehabilitate anthropogenic soils for urban agriculture is recent and requires greater study to ensure their appropriate use. The …
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STORMWATER MANAGEMENT PRACTICE MONITORING USING LONG-TERM TIME LAPSE ELECTRICAL RESISTIVITY TOMOGRAPHY AND SOIL SENSORS: IMPLICATIONS FOR DESIGN, MAINTENANCE, AND SOIL MOISTURE MONITORING
… to the large amount of impervious surface cover, urban areas are at high risk for flooding and, in cities with combined sewer systems, subject to sewer overflow during heavy storm events. The Pennsylvania Department of Transportation (PennDot) is currently reconstructing and expanding parts of …
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Development of Urban Tree Growth Models Based on Site and Soil Characteristics
Trees provide numerous benefits crucial to urban environments, yet poor growing conditions often prevent trees from reaching their genetic potential for growth, longevity, and ecosystem function. To overcome these limitations, greater understanding of tree growth in the urban environment is needed. …
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COMPOST QUALITY RECOMMENDATIONS FOR REMEDIATING URBAN SOILS
Poor soil health is a critical problem in many urban landscapes. Degraded soil restricts plant growth and microorganism activity, limiting the ability of urban landscapes to perform much needed ecosystem services. Amending soil with compost can increase infiltration, microbial biomass, cation …
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Using Geophysics and Terrestrial LiDAR to Assess Stormwater Parameters in Vacant Lots in Philadelphia
… and quality has become an important issue in urban hydrology. Impervious cover associated with urbanization increases surface runoff volumes and degrades the water quality of urban streams and rivers. Cities with combined stormwater and sewer lines such as Philadelphia, have been tasked with …
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An ecohydrological impact assessment in urban areas
… growing at a faster rate, resulting in increased urbanisation, especially in developing countries. More than half of the global population currently lives in urbanised areas with an increasing tendency. The growth of cities results in a significant loss of vegetation cover, soil compaction and …
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