Forests in Indonesia's concession areas rapidly destroyed
The research, published in the journal Conservation Letters, used a combination of satellite data and concession data to link specific activities to forest cover change.
It found that of the 14.7 million hectares of forest cleared in Sumatra, Kalimantan, Sulawesi, the Moluccas and Papua during the 2000's, 6.6 million hectares occurred within industrial concessions: 1.9 million hectares in fiber plantations; 1.8 million ha in logging concessions, 1.6 million ha in oil palm concessions, 0.9 million hectares in concessions with overlapping zoning, and 0.3 million hectares in coal mining concessions.
The study did not assess the roughly 55 percent of deforestation that occurred outside concession areas, but oil palm development, illegal logging, industrial and smallholder agriculture, other types of mining, and fire would account for the majority of that loss.
Geographically, 48 percent forest loss within industrial concessions occurred in Kalimantan, followed by Sumatra (32 percent), Papua (12 percent), and Sulawesi (5 percent). Lowland forest accounted for three-quarters of forest loss in industrial areas. Peatlands conversion amounted to 21 percent of total loss.
The study also looked at greenhouse gas emissions from concession development. Pulp and paper plantations were the single largest source of carbon emissions during the period, accounting for more than a third of total industrial emissions. Oil palm (28 percent), logging (22 percent), and mixed concessions followed.
Drivers varied dramatically by island: in Sumatra fiber plantations amounted to nearly 60 percent of emissions, while the palm oil industry in Kalimantan accounted for about 40 percent. Logging concessions were the biggest source of industrial land use emissions in Papua, Sulawesi, and the Moluccas.
While the study assessed what happened in the past in terms of forest loss and emissions, it also provides insight into the potential future of Indonesia's forests, including the extent of forest cover surviving inside and outside concessions. It found that almost 35 percent of the 77.4 million hectares of forest remaining in Kalimantan, Sumatra, Sulawesi, the Moluccas, and Papua lies within industrial concessions.
70 percent of that is within logging concessions, indicating the importance of these areas in efforts to curtail Indonesia's high level of greenhouse gas emissions, according to the authors.
The authors note that is still lacking for Indonesia and call for greater transparency around land use to improve accountability around issues like deforestation and haze. ■