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 9 of 9 for “"soil and climate"”.
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THE INFLUENCE OF ENVIRONMENTAL VARIABLES ON THE HEIGHT GROWTH OF LOBLOLLY PINE (Pinus taeda) IN THE WESTERN GULF
<p>Understanding the effects of environmental factors on stand growth is important in optimizing forest management plans. This study investigated the effects of soil and climate factors on the height growth (site index) of loblolly pine (<em>Pinus Taeda L.</em>) using data collected from permanent …
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Mise en place d’un système de mesure par covariance de turbulence des flux de N2O sur une parcelle agricole
… to stratospheric ozone depletion. Agricultural soils represent its main source. N2O is produced by microorganisms through nitrification and denitrification processes. Both depend on oxygenation conditions and nitrogen and labile carbon availability, which are driven by soil and climate …
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Produtividade de pastagens em diferentes épocas do ano em latossolo amarelo no brejo paraibano
… grasses are the most widely planted in and country, being used in phases, rearing and fattening of animals. Adapt to different conditions of soil and climate, occupying growing space throughout the Brazilian territory, to provide satisfactory forage production in soils with low to medium …
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Vineyard soil matters: exploring the influence of soil physical and chemical properties on Eastern U.S. grape production
The relationship between soil and wine quality has been recognized for generations but has had limited scientific validation. Vineyard soils in the eastern United States are largely unstudied although proper site selection and good soil management have the potential to improve fruit composition for …
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Essays in Environmental Economics
… policy trades off economic development and environmental surplus. In Chapter 1, I quantify global inefficient and spatially misallocated agricultural deforestation: carbon emissions-intensive deforestation on land with low agricultural yields. I incorporate spatial cost differences, …
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Modeling Fate and Transport of Nitrogen and Phosphorus in Crop Fields Under Tropical Conditions
… models were developed for temperate conditions and, thus, do not appropriately represent tropical conditions. The objective of this research was to develop or adapt a nonpoint source pollution model to simulate transformations and losses of nitrogen (N) and phosphorus (P) in leachate and runoff …
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ECOLOGICAL AND EVOLUTIONARY DRIVERS OF SPECIES DISTRIBUTIONS IN THE GRASSY BIOME
… of vegetation that occurs according to climatic and soil conditions. For example, rainforests and tropical grasslands should occur in different climates and are expected to differ drastically in their biogeochemical rates, owing to differences in plant water-use, nutrient-use, and photosynthesis. …
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Optimizing non-flooded landscape units to support maize production in the Zambezi region, Namibia
… of floodplains affect agricultural activities and such impact is evident. In Namibia, the Zambezi Region has experienced high variability in rainfall patterns, extreme rainfall and flood in space (spatial) and time (temporal) more than any other region as a result of climate variability. The …
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Assessing long-term conservation of groundwater resources in the Ogallala Aquifer Region using hydro-agronomic modeling
… groundwater depletion has occurred globally and regionally, notably in arid and semi-arid regions, often due to providing irrigation water for crop cultivation. The High Plains Aquifer (HPA) is the largest freshwater aquifer in the United States and has experienced severe depletion in the …