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Earth Resources
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Technical Report
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Research Paper
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Acid Deposition
How damaging is acid rain? Current opinions differ widely, in part because for every proposed link between acid rain and adverse environmental effects an alternative explanation based on other phenomena can be or has been proposed, and in many cases cannot be readily dismissed. The specific areas addressed in this volume include the emissions of sulfur and nitrogen oxides, precipitation chemistry, atmospheric sulfates and visibility, surface water chemistry, sediment chemistry and abundance of diatom taxa, fish populations, and forest productivity. The book then draws conclusions about the acid deposition-phenomenon relationship, identifying phenomena which are directly acid deposition-caused and suggesting others apparently caused by human activities unrelated to acid deposition.
Increasing Water Yield in the Northeast by Management of Forested Watersheds
The purpose of this research paper is to present some of the methods by which water yields can be increased from forested watersheds and to discuss the effectiveness of these methods under different conditions. Methods discussed include clearcutting, partial cutting, and use of herbicides. Effectiveness during drought is considered. Effects on water yield of reforestation, forest protection, and forest fire and other destructive agencies are discussed. And finally, safeguards for water quality are considered.
