Active aluminum status in surface horizons showing continuous climosequence of volcanic ash-derived soils in Towada district, northeastern Japan
1996; Taylor & Francis; Volume: 42; Issue: 1 Linguagem: Inglês
10.1080/00380768.1996.10414694
ISSN1747-0765
AutoresTadashi Takahashi, Sadao Shoji,
Tópico(s)Bauxite Residue and Utilization
ResumoAbstract The relationship between the status of active Al of surface horizons formed in Towada-a ash and climatic conditions was studied in the Towada district, Aomori Prefecture. The mean monthly air temperature and precipitation were estimated from 1-km2 mesh data supplied by the Japan Meteorological Agency. Thornthwaite's P-E (precipitation-evapotranspiration) index was used as the single climatic index combining the temperature and precipitation. The results showed that the status of active Al was definitely dependent on the P-E index, representing a continuous Spodosol-nonallophanic Andisol-allophanic Andisol transition.
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