Open AccessAnalysis of vegetation cover and built-up areas in the Percut watershed landscape, North Sumatra Province using sentinel-2 imagery
Author(s) -
Bejo Slamet,
Muhammad Syahputra,
Harry Kurniawan,
M Saraan,
M M Harahap
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/912/1/012089
Subject(s) - normalized difference vegetation index , watershed , vegetation (pathology) , land cover , environmental science , enhanced vegetation index , hydrology (agriculture) , vegetation cover , remote sensing , vegetation index , hectare , cover (algebra) , significant difference , physical geography , land use , geography , geology , climate change , ecology , archaeology , mathematics , medicine , statistics , agriculture , oceanography , pathology , computer science , biology , machine learning , geotechnical engineering , engineering , mechanical engineering
Changes in land cover have an impact on the health condition of a watershed. This research was conducted by utilizing Sentinel-2 imagery for the recording period 2020 and 2021. Three indices were used in this study, namely, the Normalized Difference Built-up Index (NDBI), Normalized Difference Water Index (NDWI) and Normalized Difference Vegetation Index (NDVI). NDBI analysis indicates there is an increase in the built-up area of 2,092.62 hectares which means land conversion. NDWI classification shows an increase in the wetness area of 308.58 hectares, mainly occurring in the downstream part of the watershed, located to the north. There is an increase in the area of non-vegetated areas reaching 288.96 hectares in the Percut watershed based on the results of the NDVI analysis.