Indonesia, Lake, Remote Sensing

Sentarum Lake Nature Reserve Surrounded by Oil Palm Plantations

This study documented the expansion of oil palm plantation in the moratorium area, especially in peatland near the Sentarum Lake Nature Reserve, West Kalimantan, Indonesia (Figure 1)

Figure 1. Study Area
Figure 1. Study Area (Ramdani, 2013)

We employ Landsat 8, acquisition June 24, 2013 to monitor the recent expansion in the study area.

We confirmed that the expansion of oil palm plantations occured in the moratorium area, not to far from Sentarum Lake Nature Reserve. Ramdani (2013) reported that this expansion have been threat the lake environment due to huge sedimentation. In July 2009, despite the wet months in West Kalimantan, Sentarum Lake Nature Reserve no longer able to hold water as well as in the year 1990, and large scale of bare-soil appeared (bright yellow and dark red color of the center and right of Figure 2). Large scale of dried-swamp vegetation were appeared in the period 2004-2009. Furthermore the lake also became more shallow in this period as shown in the Figure 2, the color of the water became lighter than in the year 1990 (Ramdani, 2013). (Please read full article here)

Figure 2. Sedimentation process in the lake
Figure 2. Sedimentation process in the lake (Ramdani, 2013)

The expansion occured on Suhaid and Klaru area (Figure 3). Suhaid is flat sandy terraces coverred by deeper peatland, Klaru is swamps, which is permanent waterlogged floddplains, while Gambut is deeper peat swamps, commonly domed.

Figure 3. The expansion occured on moratorium area which is dominated by peatland
Figure 3. The expansion occured on moratorium area which is dominated by peatland. Red color represented for moratorium area, while yellow color represented for peatland

The rate of expansion is remarkable compared with the year 2009, when oil palm plantations occupied only ~23 km2. In the year 2013, the oil palm plantations occupied ~300 km2 of peatland. The area of oil palm plantations increased 277 km2.

Figure 4. Oil palm plantations on year 2009
Figure 4. Oil palm plantations on July 2009, despite the wet months in West Kalimantan, Sentarum Lake Nature Reserve no longer able to hold water as well as in the year 1990. Large scale of bare-soil appeared in bright yellow and dark red color (Ramdani, 2013).

The expansion of oil palm plantations surrounding Sentarum Lake Nature Reserve in the year 2013 is shown in Figure 5 below.

Figure 5. The remarkable expansion of oil palm plantations captured by Landsat 8 image, acquisition date June 24, 2013.
Figure 5. The remarkable expansion of oil palm plantations captured by Landsat 8 image, acquisition date June 24, 2013.

Reference
Ramdani, F., 2013. Environmental change monitoring of a large seasonal-tropical lake with low accessibility in West Kalimantan, Indonesia. Inovasi Online ISSN 2085-871X, pp. 51-55

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2 thoughts on “Sentarum Lake Nature Reserve Surrounded by Oil Palm Plantations”

  1. What bands combination did you use to create the june 24 2013 image which shows cleared areas as pink? Thanks for the useful post.

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