Rehabilitation of the pedo-ecosystem on tropical acid soils in Sarawak, Malaysia
2011
Sakurai, K. | Kendawang, J.J. | Hattori, D, | Tanaka, S.
Ecosystem rehabilitation project by tree planting was attempted on the tropical acid soils in Bakam Forest Reserve, Miri, Sarawak, Malaysia. Line planting method and patch & cluster/nest planting method were adopted for this purpose. Because of the severe drought in the beginning of 1998, adaptability to such a drought condition of Koompasia malaccensis and Parashorea smithesii followed by Dryobalanops aromatica and D. lanceolata were found to be higher, based on the ecophysiological properties of 9 domestic tree species and their survivorship 6 months after plantation. Rehabilitation of the degraded ecosystem could be achieved as the increase in sensitivity and subsequent recovery to the environmental change. Soil weathering status was suggested as the most important soil factor to evaluate the current status of degradation. In terms of the soil rehabilitation, formation of soil structure would be of prime importance to improve the biological environment.
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