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.
Results
Showing 1 to 13 of 13 for “"C inputs"”.
-
Experimental litterfall manipulation effects on soil bacterial community structure and soil carbon cycling in a wet tropical forest
… to drive shifts in plant-derived carbon (C) inputs to terrestrial ecosystems via changes in litterfall and plant net primary production (NPP). However, the effects of shifting detrital C inputs on belowground microbial community function, C cycling and fluxes remain largely unknown, …
-
Experimental litterfall manipulation effects on soil bacterial community structure and soil carbon cycling in a wet tropical forest
… to drive shifts in plant-derived carbon (C) inputs to terrestrial ecosystems via changes in litterfall and plant net primary production (NPP). However, the effects of shifting detrital C inputs on belowground microbial community function, C cycling and fluxes remain largely unknown, …
-
ROTATION EFFECT OF PULSE CROPS ON NITROGEN FIXATION AND CARBON INPUT TO SOIL
… N2 fixation (BNF) and provide greater carbon (C) inputs to soil than non-pulse crops in rotation. The goal of this research was to estimate the BNF and C input to soil by various pulse crops (chickpea, lentil and field pea) grown in rotation with pulse crops and non-pulse crops. Soil cores from …
-
Evaluating post-fire woody mulch effects on soil and stream nitrogen
… In the laboratory, we quantified C and N inputs and leaching outputs from mulched and unmulched soil columns. Within the Cameron Peak fire burn scar in northern Colorado, we compared soil N availability and potential leaching losses between mulched and unmulched hillslope plots. We also …
-
Evaluating Crop Physiological and Stand Age-Related Controls Over Soil Carbon and Nitrogen Dynamics In Perennial and Annual Grains
… from a system dominated by belowground C inputs and new root growth to one dominated by the loss of belowground C via root decomposition and heterotrophic decomposition across the first two years following establishment, in line with a system transitioning from an acquisitive to …
-
Buried Surface Horizons in Saskatchewan Croplands Provide Insight into Microbial Soil Carbon Cycling and Development of Persistent Organic Matter
… C in buried soils with limited fresh C inputs and examines C persistence in soils after repeated microbial decomposition.
-
Relationships among Root Traits, Nitrogen Availability, and Mineral-Associated Organic Carbon
… accumulation in the system, while higher N inputs (168 kg/ha) reduced C gains. Notably, the use of stable isotopes allowed for the quantification of fresh C additions, with results that indicate plant-added MAOC (PA-MAOC) was influenced more by plant species and root traits, such as coarse …
-
Effects of Biosolids on Carbon Sequestration and Nitrogen Cycling
… C accumulation was not achieved by increasing C inputs from biosolids to the Coastal Plain. Soil organic C from profiles in the field sites was not different at depths below the plow layer (15-60 cm). The quantitative NMR analyses concluded that O-alkyl C was the dominant form in the particulate …
-
Tree species effects on the release of dissolved organic carbon and nitrogen from decomposing logs
… cm in diameter). Increased DOC and nitrogen (N) inputs into the forest floor can be expected from CWD. Since the fate of leached DOC depends on its biodegradability, the latter might play a substantial role for carbon sequestration in forest soils. The general goal of this study was the …
-
Environmental and developmental regulation of carbon cycling in a warm-temperate forest
… in soil C despite 12 years of increased C inputs to soils under elevated CO2, and (2) the trees have increased soil N acquisition under elevated CO2 and maintained the positive CO2-induced growth response over a long time period (>10 years). The enhanced rates of NPP under elevated CO2 …
-
A modeling framework for characterizing root exudation-driven geochemical dynamics in the Critical Zone
… results show that root-sourced reactive C inputs can lead to the augmentation or reduction of solute concentrations in the soil by several orders of magnitude. Silicate weathering products illustrate episodic leaching patterns, and calcium simulations reveal the development of a stable …
-
Plant root contributions to the carbon balance of a changing agricultural Midwest
… change, the potentially major increase in root C inputs associated with a change from row crops to high-yielding perennial grasses (Miscanthus × giganteus and Panicum virgatum), and the taxonomic partitioning of vertical niche space in a restored prairie. To determine the effect of climate change …
-
Legume integration and nutrient management impacts on soil health and cropping system productivity
… especially when combined with organic nutrient inputs, holds great promise for supporting soil health. However, legume performance and potential contributions to soil health, likely depend on legume species, management practices and inherent soil properties. The research considered here includes …