Aluminum chemistry in a forested spodosol.

C. T. Driscoll, N. Van Breemen, J. Mulder

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Abstract

The Al chemistry of seeps, soil solutions and soils was evaluated at the Hubbard Brook Experimental Forest in New Hampshire. Concentrations of both organic and inorganic forms of Al were highest at the higher elevations. The extent of spodosol development was consistent with these observations, suggesting the rate of spodosolization is greatest at high elevations in the watershed. The historical rate of organic Al deposition within the mineral soil far exceeds the current rate of organic Al precipitation from soil solutions. Processes such as vegetation turnover and windthrow may be important to the Al cycle at Hubbard Brook. Removal of modest amounts of dissolved inorganic Al from the Bhs1 horizon, and subsequent export from the soil, occurs during winter and early spring. This process may be due to atmospheric inputs of acidic substances. -from Authors

Original languageEnglish (US)
Pages (from-to)437-444
Number of pages8
JournalSoil Science Society of America Journal
Volume49
Issue number2
DOIs
StatePublished - Jan 1 1985

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ASJC Scopus subject areas

  • Soil Science

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