Weathering rates in Swedish forest soils

Contribution of carbonate weathering to the CO2 efflux from temperate forest soils

Temperate forests provide favorable conditions for carbonate bedrock weathering as the soil CO2 partial pressure is high and soil water is regularly available. As a result of weathering, abiotic CO2 can be released and contribute to the soil CO2 efflux. We used the distinct isotopic signature of the abiotic CO2 to estimate its contribution to the total soil CO2 efflux. Soil cores were sampled f...

Weathering and Development of Chemically Mature Soils

Distribution of radionuclide in the forest soils (Western Ghats-India)

Background: The presence of radionuclides in the soil, measures need to be taken to minimize the radiation dose to humans. It is mostly gamma-emitting radionuclides that contribute to the radiation dose in long term behavior of these radionuclides in soil may determine the extent to which such countermeasures need to be applied. Materials and Methods: The activity concentration of these radionu...

Weathering Controls on Mechanisms of Carbon Storage in Grassland Soils

On a sequence of soils developed under similar vegetation, temperature and precipitation conditions, but with variations in mineralogical properties, we use organic carbon and C inventories to examine mineral protection of soil organic carbon. In these soils, C data indicates that the creation of slow-cycling carbon can be modeled as occurring through reaction of organic ligands with Al and Fe ...

Gross nitrogen process rates in temperate forest soils exhibiting symptoms of nitrogen saturation

In order to examine how fundamental soil N cycling processes are affected by elevated N inputs to temperate forest ecosystems, we made concurrent laboratory measurements of gross rates of nitrogen (N) mineralization, nitrification, nitrate (NO3 ) consumption, ammonium (NH4 þ) immobilization, nitrous oxide (N2O) and nitric oxide (NO) production, and NO consumption in soils from the Harvard Fores...