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Land-Use Changes Affecting Classification of a Costa Rican Soil

Dep. of Soil Science and Geology, Agricultural Univ., P.O. Box 37, Wageningen, the Netherlands

A. L. E. Lansu

Dep. of Natural Sciences, Open Univ., P.O. Box 2960, 6401 DL Heerlen, the Netherlands

*Corresponding author.

ABSTRACT

Effects of deforestation and ensuing land use were studied on an Andic Humitropept developed from fluvio-laharic deposits in the perhumid climatic zone of Costa Rica. Drastic changes in soil climate and land use after deforestation caused compaction and clay mobilization, particularly in the profiles under maize (Zea mays L.) and pasture. The latter process resulted in a change of classification at the order level from Inceptisol to Ultisol.

Received for publication March 13, 1990.