Mapping of Vegetation Density Changes In Special Purpose Forest Area In Sisimeni Sanam Using Sentinel-2a Imagery Data
Pemetaan Perubahan Kerapatan Vegetasi Pada Kawasan Hutan Dengan Tujuan Khusus Sisimeni Sanam Dengan Memanfaatkan Data Citra Sentinel-2a
Keywords:
Vegetation Density, NDVI, Geographic Information SystemAbstract
Sisimeni Sanam Training KHDTK in Kupang Regency, with an area of 3,109.89 hectares, this area is divided into conservation, protection, and production zones, but faces various problems such as fire, encroachment, timber theft, and land degradation. To determine changes in vegetation in the last 7 years (2017 to 2024), a significant method in monitoring changes in vegetation density is by utilizing remote sensing technology with Sentinel-2A imagery. This study aims to determine the accuracy of Sentinel-2A image data and map changes in vegetation density in the last 7 years in the Sisimeni Sanam Training KHDTK. Based on the results of calculations using the confusion matrix table, the accuracy value of the ground check results is 87.8% (OA) and 81% (KA). This shows that the spatial information of density distribution using NDVI obtained has good accuracy and can be trusted. The results also show that within 7 years the KHDTK has experienced changes in vegetation density, namely 0.33 Ha/year for the sparse density class, 1,932.16 Ha/year for the medium density class and 731.85 Ha/year for the medium density class. These changes were identified based on seasonal and climatic dynamics that took place over a period of 7 years.
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