According to the following article, fire can be a good way to restore nutrients to tired and worn soil: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T4B-48B0S9C-2&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1030362425&_rerunOrigin=google&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=dd7c78e06ba5f0975afa128ad17ad63a
Prescribed fire restores soil to the conditions that are supposed to have been present before human activity compromised the rich nutrients of the soil.
As long as the soil isn’t scorched by the fire, and the soil pH isn’t changed negatively, yes. Fires can break down previously bonded nutrients. By breaking them down, the fire actually allows nutrients in their elemental state to seep into the soil and produce a more fertile kind of soil. Nitrogen is the main nutrient that helps soil. Also, fire rapidly kills plant life, which goes right back to being nutrients for the soil. Normally, the soil would have to wait for the plants to decay naturally. Fire is sort of an instant boost for soil under the right circumstances.
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