See more from this Session: Forest Soils Graduate Student Poster Session
Tuesday, November 2, 2010
Long Beach Convention Center, Exhibit Hall BC, Lower Level
Fluxes of carbon dioxide between the atmosphere and the soil are a link to how the carbon cycle mediates the concentration of CO2 in the atmosphere. Forest soils play a very important role in being a source and a sink of CO2. The ability of a soil to store C depends on various factors. The objective of this study is to discuss how soil CO2 fluxes relate to soil properties. The location of the study is the Citronelle Oil Field in Mobile County, south Alabama. Data collected include soil surface fluxes of CO2, total soil C, total N, soil moisture, soil temperature, and various macro-and micro soil nutrients which may impact C sequestration. Soil CO2 fluxes around the oil wells were highest in August, with values ranging from 0.53 to 2.28 mg CO2 m-2 min-1. The soil CO2 fluxes around the oil wells were significantly lower in the months of September, October, November, and March. The relatively high values of soil surface CO2 fluxes around the oil wells in August can be related to higher soil temperatures which generally, are associated with increased soil micro-biological activity. On the other hand, lower soil temperatures in the fall and winter times are typically associated with a decline in soil biological activity and hence resulting in less soil CO2 fluxes.