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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 63 for “"above-ground biomass"”.
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Advanced Techniques For Prediction of Forest Above Ground Biomass Using Satellite Remote Sensing Data
Large-scale mapping of forest AGB is a challenging task and crucial for forest management and planning. The use of SRS data has recently increased for AGB prediction due to their large footprint and low cost availability. There are various limitations and problems with SRS data that require …
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A comparison of canopy evapotranspiration for maize and two perennial grasses identified as potential bioenergy crops
… production. The potential widespread use of biomass crops for renewable energy production has sparked numerous environmental concerns, including the impacts of land-use change on the hydrologic cycle. We predicted that total seasonal evapotranspiration (ET) would be higher for PRGs relative …
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Improving Precision in Forest Inventory through Small Area Estimation for Loblolly Pine Plantations in Coastal Georgia
… stand-level estimates of basal area, volume, and above-ground biomass estimates in loblolly pine plantations in coastal Georgia. Following the unit-level approach, field plots sampled in plantations owned by Rayonier Inc. were georeferenced to aerial lidar data using high-quality GPS field …
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Cover crop residue effects on machine-induced soil compaction
Crop production systems which utilize the biomass produced by rye (<i>Secale cereale</i> ) to suppress weed growth and conserve soil moisture have been developed at Virginia Tech. The success of alternative, reduced-input crop production systems has encouraged research into the potential for …
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The demographic impacts of browsing on woody plants in savannas : from individual branches to whole populations
… and predicting responses are framed in terms of biomass impacts and responses. However, for trees in African savannas, fitness is more closely linked to height than above ground biomass. I evaluate the demographic impacts of browsing, making explicit contrasts with impacts on biomass. The results …
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Agronomic management to improve corn productivity under high-yielding environments
… resources became limited, plants produced more above-ground biomass at the expense of below-ground biomass. However, plants grown in a narrower spacing allocated more energy to producing below-ground biomass instead of above-ground biomass, subsequently reducing the shoot to root ratio. Which …
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Performance of spring wheat under summer rainfall winter irrigated conditions in Zambia
… tillers per square meter, leaf area index, root biomass, peduncle length, plant height, days to heading and days to maturity were recorded for each plot. Intra season and a combined analysis for season 1 and season 2 was carried out. The varieties did not differ significantly in yield, biological …
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Performance of spring wheat under summer rainfall winter irrigated conditions in Zambia
… tillers per square meter, leaf area index, root biomass, peduncle length, plant height, days to heading and days to maturity were recorded for each plot. Intra season and a combined analysis for season 1 and season 2 was carried out. The varieties did not differ significantly in yield, biological …
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Spring-Thaw Nitrous Oxide Emissions From Reed Canarygrass On Wet Marginal Soil In New York State
… Soil temperature, volumetric water content, and above-ground biomass were also observed, as were hourly air temperature and precipitation. Hot-moment analysis, non-parametric statistics and modeling results show that in the reed canarygrass, the topologically low subplots exhibited significantly …
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Soil carbon and nitrogen cycle modeling for bioenergy crops
… harvest litter amounts for miscanthus (15% of above-ground biomass when harvested), and switchgrass (25%) to sequester significant quantities of atmospheric carbon dioxide (CO2) into the soil (up to 9.7 and 7.5 kg C m-2 accumulations in miscanthus and switchgrass, respectively, within the next …
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Productivity and biomass partitioning in 20-year Black cottonwood at variable spacing
… the effects of different spacing treatments on aboveground biomass production, bark, sapwood and heartwood ratios and the branching ratio in 20-year old Black cottonwood (Populus balsamifera L. ssp. trichocarpa (Torr. & A. Gray ex Hook.) Brayshaw) experimental plantation within Sandlækjarmýri …
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Herbicide phytotoxicity response and eradication studies in Miscanthus x giganteus
… with activity on only broadleaf weeds reduced above-ground biomass or produced visible injury in Mxg. Several herbicides reduced biomass yield or produced injury, and some, particularly those with significant activity on grass weeds, reduced dry mass and produced visible injury. Results support …
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Estimating Carbon Pool and Carbon Release due to Tropical Deforestation Using High-resolution Satellite Data
… is to develop an operational tool for monitoring biomass and carbon pool of tropical forest ecosystems. The method was applied to a test site of Bangladesh. The research used Landsat ETM+, Landsat TM and IRS pan images of 2001, 1992 and 1999 respectively. Geometrically corrected Landsat ETM+ …
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Assessing Potential Solutions to Mitigate Pollution from Neonicotinoid Seed Coatings
… to determine neonicotinoid uptake of different ground covers used as cover crops or edge-of-field buffer strips, as well as the partitioning of thiamethoxam and clothianidin throughout the plants. Ground covers, such as crimson clover, had the highest recovery of applied thiamethoxam, meaning …
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High-throughput phenotyping and genetic mapping of drought stress related traits in setaria (Setaria spp) and rice (Oryza spp)
… under field conditions in Illinois. The total above-ground biomass was negatively correlated with canopy temperature and stomatal density whereas stomatal density and canopy temperature were positively correlated. These trait relationships suggests the an interaction is likely occurring between …
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Determinants of wet season landscape and forage selectivity by cattle on farm Kiamsab West 364, central Namibia
… was recorded, cover was visually estimated, and above-ground biomass was collected. Forage selectivity was determined with Jacob's Selectivity Index (JSI). Percentage slope, elevation, species richness, species diversity (H'), cover, and biomass were explanatory variables in the Canonical …
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A Deep Learning Study on the Retrieval of Forest Parameters from Spaceborne Earth Observation Sensors
… such as digital terrain model regression and above-ground biomass density estimation. Finally, the capability of the proposed approach to be extended to the use of other EO sensors is also evaluated, with a particular emphasis on the ESA Sentinel-1 and Sentinel-2 missions. The developed deep …
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Spatial and temporal variability of carbon stocks within the River Colne Estuary
… the estuary, higher plant species distribution, above-ground biomass and aerobic respiration on TOC content was investigated. The spatial and temporal variation of sediment TOC content was investigated by monthly sampling from two habitats and three zones at each study site. There was a …
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An investigation of riparian vegetation recovery following invasive alien tree clearing in the Western Cape
… Current management objectives are to reduce above ground biomass of invasive alien plants by labour intensive means, after which indigenous vegetation is usually left to recover without further intervention. However, it is unclear to what extent natural recovery can be achieved. The main aims …
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Mitigating Investment Risks in Nature-Based Solutions: A Strategic Approach Towards Sustainable Project Implementation
… relationship between changes in soil carbon and above-ground biomass following plantation by utilizing a diverse set of measurements across multiple interrelated sites. The resulting estimates provide insights and decision-making tools to guide investment choices concerning reforestation …
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