THE 1997 LAND-FIRE AND HAZE IN CENTRAL KALIMANTAN: ITS POSSIBLE IMPACT ON AQUATIC ECOSYSTEM IN THE REGION

概要

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In 1997, the greatest forest fire occurred in Indonesia. The fire was caused by a combination of traditional shifting cultivation practice, land use change and the prolonged dry season due to the El-Nino phenomenon. Central Kalimantan region was the worse region affected by the fire. In this region the fire occurred mostly in lowland area that mainly consist of peatland. There was evidence that the fire contributed to the occurrence of the acid rain in the region. The rain water pH dropped considerably from 5.88 in 1993 to only 4.61 in 1997. This acid rain could affect the acidification of aquatic ecosystem in the region. However, there have been also many scientists reported that the forest fire could, inversely, affected the alkalization as well as the eutrophication process to the aquatic ecosystem. The extremely high production of fly ash or total particulate matter from the last 1997 forest fire in Central Kalimantan and the location of the fire that spread our all over the southern part of the region, might also contribute to the alkalization and eutrophication of certain aquatic ecosystem. Since there has been no a specific research conducted, so the future co-operative research program on this issue is urgently needed.
信州大学理学部の論文
2000-03-15