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 10 of 10 for “"mineral-associated organic matter"”.
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Soybean nitrogen dynamics: Nitrogen fixation, yield, and residue decomposition
… the effect of different litter amendments on mineral associated organic matter (MAOM) accumulation and stabilization. Soils amended with soybean and maize litter had more stable MAOM-N, with greater efficiency of accumulation compared to oats and alfalfa litter amendments. In my second study, …
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Exploring the Impact of Climate and Productivity on Soil Carbon Across the Native Range of Loblolly Pine
… to explore the potential changes in bulk soil organic carbon (SOC) and protected mineral-associated organic matter (MAOM) with changes in mean annual temperature (MAT) and annual net primary productivity (NPP) for the native range of loblolly pine (Pinus taeda L). A Monte Carlo method was used …
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Buried Surface Horizons in Saskatchewan Croplands Provide Insight into Microbial Soil Carbon Cycling and Development of Persistent Organic Matter
… thesis was to quantify and characterize the soil organic C (SOC) and examine microbial decomposition of this C in buried surface horizons, decades after burial. Surface (Ah) soils were sampled at 0-10 cm, buried surface (Ahb) soils were identified around 40-50 cm deep, and buried subsoil (Bmb) …
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The Effects of Biochar and Reactive Iron Additions on Soil Carbon and Nitrogen Retention
Soil organic matter (SOM) is a critical biogeochemical pool that can be managed as part of global efforts to conserve nutrients and enhance carbon (C) sequestration. But reliably increasing SOM has proven difficult because most of the organic matter that enters soil as plant litter and organic …
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Environmental change impacts on carbon and nitrogen dynamics in soils and vegetation: from global synthesis to local case studies
… (1) the responses of carbon (C) in total soil organic matter (SOM) and its fractions to warming, elevated atmospheric carbon dioxide (CO2), altered precipitation regimes, and nitrogen (N) fertilization globally using meta-analysis; (2) SOM C and N stoichiometry and distribution in response to …
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Resilience of peaty systems to low-severity wildfires in the Cairngorms
… all of which are combined with a wide range of associated fire regimes, which we introduce in Chapter 1. Existing research typically examines fire effects on specific peaty environments in isolation and only at one point in time. These as well as other factors result in substantial variability …
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Sequestration and Characterization of Soil Organic Carbon for Shelterbelt Agroforestry Systems in Saskatchewan
… is available on the storage and dynamics of soil organic carbon (SOC) for shelterbelt systems. The objective of this research was to examine the effect of shelterbelt plantings on the storage, physical stabilization and chemical composition of SOC for major shelterbelt species across Saskatchewan …
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Relationships among Root Traits, Nitrogen Availability, and Mineral-Associated Organic Carbon
Mineral-associated organic carbon (MAOC) is a vital component of soil health and ecosystem productivity, playing a key role in carbon (C) sequestration and nutrient cycling. This dissertation investigates how plant root traits, nitrogen (N) fertilization, and cover cropping influence soil organic …
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Turnover and fluxes of carbon and nitrogen in a spruce forest under natural and extreme meteorological conditions
… and their impact on availability of soil organic matter. The influence of drying/rewetting (A/W) and freezing/thawing (G/A) events on solution chemistry and leaching losses of soils is barely known. This thesis aimed to study the effects of A/W and G/A events on soil solution chemistry and …
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Feeding the soil to feed the planet: soil health outcomes from novel amendments to residue management
… of soils. Specifically, the application of organic inputs including composts and animal manures can help enhance water holding capacity, organic matter accumulation and crop production. However, the heterogeneous nature of soils and diversity of production systems precludes a single ‘silver …