1023
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B7. Beijing 2008
80000
70000
60000
50000
40000
30000
20000
10000
—♦—Area
Linear (Area)
1998/07 1999/07 2000/07 2001/07 2002/07 2003/07 2004/07 2005/07 2006/07
Area 53046.4 37513.3 31835.1 38680.4 31476.5 71621 35983 2 27899.3 40641.7
Figure 5. Change of vegetation area between years 1998-2006
Figure 6. Change of vegetation area between years 1998-2006
Fleute, A.R., 1998, A soil-adjusted vegetation index (SAVI).
Remote Sensing of Environment, 25, 295-309
Mijiddorj, R., Bayasgalan, Sh., 2006, “Integrated Assessment
on Drying Process in the Ongi River Basin”, Ulaanbaatar,
Mongolia
“NGO ONGIINHON”: http://www.onggiriver.com/
SPOT-VEGETATION: http://www.free.vgt.vito.be/
ACKNOWLEDGEMENTS
We would like to thank SPOT /VEGETATION
(www.free.vgt.vito.be) data center for providing satellite data
and “NGO ONGIINHON” in Mongolia for their contribution to
ground truth collection.
in the
Onggi river basin /MSAVI/.
45000
40000
35000
30000
25000
20000
15000
10000
5000
1998/07 1999/07 2000/07 2001/07 2002/07 2003/07 2004/07 2005/07 2006/07
Area 40640.6 27403.2 23171.5 29169.8 14780.7 37807 24531.1 18196.2 28921.2
in the
Onggi river basin /NDVI/.
REFERENCES