Analysis vegetation change on coal mine reclamation using Normalized Difference Vegetation Index (NDVI)

Abstract

Vegetation cover is a critical indicator and sensitive in degradation land. This study aims to explore the comparative analysis of vegetation index in the ex-mine reclamation area. The study is conducted on 2.03 ha area reclamation planted in 2017. The analysis is performed by measure Normalized Difference Vegetation Index (NDVI) from 2017 to 2020 using the Sentinel-2 satellite imagery dataset and processed by ArcGIS Pro 2.6 software. RGB drone photogrammetry acquired in April 2020 and vegetation photos featured with geotagging is used to validate vegetation index analysis. The result shows NDVI first and second-year revegetation demonstrates no significant improvement (less than 0.33), nevertheless third and fourth-year revegetation shows dramatically increase of NDVI, respectively 0.369 and 0.417 with the percentage of healthy vegetation 68.13% and 81.39%. This shows that NDVI and the percentage of vegetation health improve over the year.