Record Display for the EPA National Library CatalogRECORD NUMBER: 6 OF 9
|Main Title||Simulation of nutrient loss from soils due to rainfall acidity /|
|Author||Reuss, J. O. ; Reuss., John O.|
|CORP Author||Corvallis Environmental Research Lab., Oreg.|
|Publisher||Environmental Protection Agency, Office of Research and Development, Corvallis Environmental Research Laboratory ; For sale by the National Technical Information Service,|
|Stock Number||PB-285 174|
|Subjects||Rain and rainfall--United States. ; Acid rain. ; Soil chemistry.|
|Additional Subjects||Rainfall ; Acidity ; Soil sciences ; Nutrients ; Losses ; Mathematical models ; Calcium oxides ; Plant ecology ; Plant nutrition ; Soil properties ; Precipitation(Meteorology) ; Evapotranspiration ; Concentration(Composition) ; Carbon dioxide ; Simulation ; Leaching ; Cations ; Ion exchanging ; Soil properties ; Air pollution ; Acid rain ; Precipitation washout|
|Collation||ix, 45 pages ; 28 cm.|
This paper describes a simulation model that provides a quantitative system utilizing established relationships from soil chemistry to predict the most likely effect of rainfall acidity on the leaching of cations from noncalcareous soils. The model utilizes the relationships between lime potential (pH - 1/2pCa) and base saturation. The equilibrium between CO2 partial pressure and H(+) and HCO3(-) in solution, the apparent solubility product of AL(OH)3, the equilibrium of cations and anions in solution, the Freundlich isotherm description of sulfate adsorption, and mass balance considerations, to predict the distribution of ions between the solution and sorbed or exchangeable phases. Ionic composition of leachates in response to rainfall composition can thus be computed. Ions considered in the present version are H(+), Ca(2+), Al(+3), SO4(-2), Cl(-) and HCO3(-).
Issued May 1978. Includes bibliographical references (pages 43-44).
Includes bibliographical references (p. 43-44).