Multispectral vegetation analysis for land cover change within Mount Makiling, Philippines
2012
Barua, L.D.
Land cover change is commonly regarded as the conversion of one land cover type to another. Several studies quantity change using delineated land cover types derived from remotely sensed data. FAO's forest assessment show a notable decrease in Philippine forest conversion from 1990 to 2000 and 2000 to 2005 (FAO, 2010). In another study, Makiling Forest Reserve (MFR) indicates forest cover increase accompanied by spatial reconfiguration of prominent land uses (Combalicer et al., 2010). Protective measures are implemented to safeguard of MFR from land use conversion. However, another type of vegetation change is present. Decrease in vegetative cover that characteristically change an area but subtle enough not to change overall classification is regarded as degradation (Lambin, 2003). Land cover change was studied using remote sensing (RS) and geographic information system (GIS). Vegetation and soil indices were analyzed using change vector analysis (CVA). Results indicate at 43.4% increase, 51.0% retention, and 5.6% decrease of vegetative cover within MFR from 1993 to 2009. Computations indicate 4.6% of MFR experienced forest degradation. The study demonstrates a rapid land cover change assessment method. Results can be used as guide for monitoring activities as well as identification of conservation priorities, especially in areas lacking baseline data.
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