Chemical response of soil leachate to alternative approaches to experimental acidification

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Commun. Soil Sci. Plant Anal.; (United States)

DOI:https://doi.org/10.1080/00103628609367765· OSTI ID:6899484

Fernandez, I J; Kosian, P A

One approach to evaluating computer models which predict terrestrial-aquatic ecosystem response to acid deposition is the experimental acidification of soils with subsequent comparisons among predicted and measured soil solution response. Using a soil microcosm experimental approach, comparisons between simulated acid rain (i.e. dilute H/sub 2/SO/sub 4/), dry NH/sub 4/NO/sub 3/, and prilled reduced S were made for suitability for large-scale field experiments. Soil microcosms consisting of reconstructed soil profiles received a background simulated throughfall dosing over the six month treatment period. Results indicated that simulated throughfall, applied at twice the ambient rate, acidified soil leachates approximately 0.5 pH units over the treatment period. Along with the decline in leachate pH was an apparent release of base cations as well as Fe and Al. Over the length of the treatment period, very little of the prilled S dissolved and the simulated acid rain treatment did not have significant effects on leachate chemistry.

• Research Organization: Univ. of Maine, Orono
• OSTI ID: 6899484
• Journal Information: Commun. Soil Sci. Plant Anal.; (United States), Journal Name: Commun. Soil Sci. Plant Anal.; (United States) Vol. 17:9; ISSN CSOSA
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
ACIDIFICATION
ALUMINIUM
AMMONIUM COMPOUNDS
AMMONIUM NITRATES
ATMOSPHERIC PRECIPITATIONS
CATIONS
CHARGED PARTICLES
COMPUTERIZED SIMULATION
DISPERSIONS
ELEMENTS
ENVIRONMENTAL EFFECTS
ION EXCHANGE
IONS
IRON
LEACHATES
METALS
MIXTURES
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
RAIN
SIMULATION
SOILS
SOLUTIONS
SULFATES
SULFUR COMPOUNDS
THROUGHFALL
TRANSITION ELEMENTS