MODIS Land Cover Compare with NEP
71 land cover type 1, it has chosen land cover data are used land cover year 2004
and NEP estimation during normal climate event year 2005. Figure 4.20 show land cover type-1 derived from MODIS data and estimation result of Net
Ecosystem Production NEP. The MODIS land cover product is designed to support scientific
investigations that require information related to the current state and seasonal-to- decadal scale dynamics in global land cover properties. The product consists of two
suites of science datasets. MODIS Land Cover Type includes five main layers in which land cover is mapped using different classification systems.
Figure 4.20 Comparison of land cover data type-1 from MODIS and NEP
MODIS land cover data type I used to validate and assessment of NEP has shown with general result. There are 16 classes of land cover data over Sumatra
Island but the result is not give clearly result. For example, when overlay estimation of NEP result with positive value as indicated carbon sink into land
cover data, the result has shown with the same classes which is as class of „evergreen need-leaf forest‟. However, when overlay estimation of NPP result
with negative value as indicated as carbon source into land cover data, the result has shown with the same classes which is as class of „urban areas‟.
72 Figure 4.20 also has shown that urban areas in land cover data have same
location with estimation result of NEP. Urban areas indicated as carbon source and in NEP values is show with negative value.
As the MODIS land cover and other products have demonstrated, robust, repeatable, and semi-automated mapping of global land cover with wide areas.
However, there is some limitation of information resulted from MODIS land cover with general information. Moving forward, significant challenges exist in
merging high frequency moderate resolution observations from sensors like MODIS with lower frequency but higher spatial resolution sensors such as
Landsat or other satellite data.
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V. CONCLUSION AND RECOMENDATION