Ecological Impact of the one Million Hectare Rice Project in Central Kalimantan, using Remote Sensing and GIS, 11-2001
22nd Asian Conference on Remote Sensing (ACRS),
5-9 November 2001, Singapore
Boehm, H.-D.V. (1), Siegert, F. (1,2)
Tel: +49 8102 774848, Fax: +49 8102 774850, e-mail: firstname.lastname@example.org
2) Remote Sensing Solutions GmbH, Woerthstrasse 49, D-81667 Munich, Germany
Tel: +49 89 48954765, Fax: +49 89 48954767, e-mail: email@example.com
The multi-temporal analysis of six LANDSAT TM image acquired between 1991, 1997 (before the fires) and 2000 shows the quick changement of the sensitive peatland and high rates of deforestation. Two TM images, 118-61 and 118-62, with 5.4 million ha were compared. Additionally the MRP area between the Rivers Sebangau in the West, River Kahayan, River Kapuas and River Barito in the East and the Java Sea in the South was processed and the relative pristine PSF between catchment Sebangau and river Katingan with 2.4 million ha. The total area of MRP impact is 1.5 million hectares for the Blocks A, B, C, D and E. It was found that from the 6 descripted regions with 2.406.732ha in 6/1991 1.560.377ha (64.8%) was covered with forest while in 5/1997 1.377.442ha (57.5%); res. 7/2000 1.110.151ha (45.7%) was covered with forest. Strong logging and illegal-logging took please. Legal logging operation prepared the ground for further degradation of the forests by fire, illegal logging and farming. More than 11,000km of logging railways were mapped in an area of 25,000km². Illegal logging could be often discriminated from legal logging operation in Landsat ETM images by its specific spatial pattern. The logged over area increased by 44% between 1997 and 2000.
Field and aerial surveys showed that most of this increase could be attributed to illegal logging. If the situation continues as for the years 1991 to 2000 there is a very high risk that most of the PSF resource in Central Kalimantan will be destroyed within few years with grave consequences for the hydrology, local climate, biodiversity and livelihood of the local people. Unless land use policies are changed to control logging and the drainage of the peatland will be stopped recurrent fires will lead to an irrecoverable loss of this unique rainforest ecosystem.