Читать книгу Sustainable Development Practices Using Geoinformatics - Группа авторов - Страница 25

In summary, the satellite-based remote sensing images are very impressive dataset for urban sprawl study. Moreover, GIS platform provides toolset for analyzing temporal LST and NDVI retrieval over a period, giving chance for comparison and trend delineation. Barasat municipality, although a small city is showing UHI formation, may be due to poor planning and indiscriminate urbanization. However, Barasat municipality being a sub-urban part of Kolkata is facing problem of rapid urbanization and degradation of natural vegetation. Due to poor planning and giving no space for surface air ventilation and greenery in the city, the city is under environmental stress leading to rise in LST and UHI formation. Availability of legacy remote sensing data provides good chance for comparison of changes in environmental conditions in the study area in wholesome perspective.

Figure 1.10 Regression analysis of LST vs. NDVI.

Figure 1.11 Urban Heat Island (UHI) formation in Barasat municipality area in the year 2001, 2011, and 2017.