TY  - EJOU
AU  - Phuong, Vu Thi 
AU  - Thien, Bui Bao 

TI  - Monitoring Vegetation Cover Changes in a Rapidly Urbanizing Region: A Case Study in Da Nang City, Vietnam
T2  - Revue Internationale de Géomatique

PY  - 2025
VL  - 34
IS  - 1
SN  - 2116-7060

AB  - Vegetation is crucial to ecosystems, thus, detecting and assessing changes in vegetation cover are receiving increasing attention. In this study, we combine remote sensing data and geographic information systems to assess vegetation cover changes in Da Nang city, Vietnam, between 1988 and 2022. Remote sensing images for the years 1988, 2000, and 2010 were obtained from Landsat 5-TM satellite data, and imagery for 2022 was obtained from Landsat 9-OLI/TIRS satellite data. In each satellite scene, we used supervised classification and spectral indices (NDWI—Normalized Difference Water Index, NDVI—Normalized Difference Vegetation Index, and SAVI—Soil Adjusted Vegetation Index) to classify land cover and assess vegetation cover. The land cover analysis revealed a significant decrease in vegetation cover and a significant increase in built-up land. The built-up land area increase of 120.12 km<sup>2</sup> (12.25%) negatively impacted the area of vegetation, causing this land cover class to decrease by 97.69 km<sup>2</sup> (9.96%) in 2022 compared to 1988. Overall, NDVI provides better estimates of vegetation cover variation than SAVI. The findings of this study can support planners in developing appropriate strategies to maintain ecological balance and prevent vegetation loss.
KW  - Landsat; GIS; remote sensing; Da Nang city; vegetation index

DO  - 10.32604/rig.2025.062829