01PRELIMINARY STUDY ON INFLUENCE OF FIRE TO PHYSICAL AND CHEMICAL CHARACTERISTICS OF SOIL AT TRAM CHIM NATIONAL PARK, DONG THAP PROVINCE

Tóm tắt

This study aims to evaluate the effect of fire on soil properties at Zone A5, Tram Chim National Park, Tam Nong district, Dong Thap province. Findings indicated that soil type was acid sulfate, soil structures were clay, clay-silt and silt-clay. pH was low while moisture was high. Electrical conductivity and bulk density were in the tolerance range for the Eleocharis community. The soil was rich in nitrogen, phosphorus, and organic matters while it was medium in total potassium. After firing, clay tended to decrease while sand and silt to slightly increase. Moisture, pH, electrical conductivity, total phosphorus and potassium increased whereas organic matters and nitrogen content tended to decrease. Bulk densities were almost unchanged over time. This study preliminary provides valuable information on the changes of soil properties under firing