Ground check for Mining area Ground check for Residential area

4.6.5 Ground check for Mining area

Figure 29 shows that NPP in the mining area varied from 400 gC m -2 yr -1 to 600 gC m -2 yr -1 . It was difficult to access the large and wide mining area since we need an authorization to enter those areas, so we dealt with small remaining mining area. Since the resolution of our data was 250-meter and the mining area was at a very small scale, the vegetation surrounding the mining area might affect the result. Figure 29 Ground check location for mining area

4.6.6 Ground check for Residential area

Figure 30 shows that the NPP value in the residential area varied from 0 gC m -2 yr -1 to 700 gC m -2 yr -1 . The value of NPP increased as long as we got far from the center of the city. The lowest NPP was found in the middle of the residential area. Figure 30 Ground check location for residential area

V. CONCLUSION AND

RECOMMENDATION

5.1 Conclusion

Estimation of NPP using NASA CASA model has shown that high value of NPP has occurred in April and May of every year and low NPP during September and October. In addition, NPP over Kalimantan ranges from 0 to 1,800 gC m -2 yr -1 . The values of the yearly average of NPP in Kalimantan from 2001 to 2010 were 762.77 gC m -2 yr -1 , 703.74 gC m -2 yr -1 , 778.68 gC m -2 yr -1 , 745.6 gC m -2 yr -1 , 797.54 gC m -2 yr -1 , 713.27 gC m -2 yr -1 , 790.01 gC m -2 yr -1 , 768.53 gC m -2 yr -1 , 752.94 gC m -2 yr -1 , and 867.65 gC m -2 yr -1 respectively. The results have shown that high NPP was found in the forest area with a value from 1,200 gC m -2 yr -1 to 1,600 gC m -2 yr -1 . It was followed by palm oil plantation with NPP of 1,000 gC m -2 yr -1 to 1,300 gC m -2 yr -1 . For peatland, the value of NPP varied between 200 gC m -2 yr -1 and 600 gC m -2 yr -1 . For water body, the results have shown that NPP varied from 0 gC m -2 yr -1 to 100 gC m -2 yr -1 . For residential area, NPP was between 0 gC m -2 yr -1 and 700 gC m -2 yr -1 . It increased as long as we got far from the center of the city. In term of mining area, the value of NPP was very low varying between 400 gC m -2 yr -1 to 600 gC m -2 yr -1 . This high value might be the result from reforestation and from the vegetation surrounding the mining area since the resolution of the MODIS data used is 250- meter. Geographic and physic condition of the area affected the distribution of NPP. If the region is very mountainous, the value of NPP was very low at about 200 gC m -2 yr -1 and 400 gC m -2 yr -1 . However, in the border of Kalimantan, the value of NPP was high reaching 1,400 gC m -2 yr -1 and even 1,800 gC m -2 yr -1 . We found out that plenty of forests were still remaining in those areas on the border but we couldn’t verify for the whole area.