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Mining activities that disturb sulfide-rich rocks, particularly those containing pyrite (FeS₂), initiate a cascade of geochemical and microbiological processes with serious environmental implications. When exposed to air and water, pyrite undergoes oxidation, releasing sulfate, ultimately forming sulfuric acid and mobilizing heavy metals into surrounding water systems. This phenomenon, known as acid mine drainage (AMD), results in low pH waters laden with toxic elements that threaten aquatic...

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Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils

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Published on: November 25, 2016

Acid rain on Acid soil: a new perspective.

E C Krug, C R Frink

Science (New York, N.Y.)

|August 5, 1983

Summary

Acid rain may not be the sole cause of soil and water acidification. Natural soil processes and land use changes also significantly contribute to acidification, complicating the assessment of emission reduction benefits.

Area of Science:

Environmental Science
Soil Science
Ecology

Background:

Acid rain is commonly attributed to soil and water acidification in North America and Northern Europe.
Factors increasing landscape susceptibility to acid rain also drive natural soil acidification.
Regions experiencing acidification are also recovering from historical land use impacts.

Purpose of the Study:

To investigate the complex interactions between acid rain, soil acidification, and vegetation.
To evaluate the role of natural soil processes and land use in acidification.
To assess the effectiveness of emission reduction strategies for sulfur and nitrogen oxides.

Main Methods:

Watershed-based analysis to examine ecological interactions.
Comparative study of natural soil acidification processes and acid rain impacts.

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Long-term monitoring of soil and water chemistry in affected regions.

Main Results:

Acidification by acid rain may be superimposed on long-term acidification from land use changes.
Natural soil formation processes are significant drivers of soil acidity.
Vegetative succession following land use changes influences soil acidification.

Conclusions:

Attributing acidification solely to acid rain may be an oversimplification.
Understanding the interplay of acid rain, natural soil processes, and land use is crucial.
Watershed-level assessments are necessary to accurately predict benefits of emission controls.