Determining Changes in Green Cover in Urban Areas

In India, urban development is showing a negative effect on green cover and climate. A decrease in a green cover is a critical problem on earth. Geographic Information system is the best technique for location analysis. The GIS help us to get required data related to desired location and visualize it. In this paper, Nagpur, a city in the Maharashtra state of India is chosen as a study area. To detect the changes of green cover in a selective area for a different time, a change detection technique is used. Landsat8 satellite image within the year 2014 to 2020 is used to recognize a green cover change. Normalized Difference Vegetation Index (NDVI) method is used to estimates the mass of vegetation present in a satellite image. By using the NDVI value, a histogram is shown and compared to detect the changes in NDVI. The result shows, NDVI is higher for more number of pixels of an image of the year 2014 and it decreases for an image of the year 2020. Which shows the differences in the green cover of an urban area.