Observation of Green Space at Selected Cities in Bangladesh

Abstract

Enough green area is must needed for healthy and quality life of humans and animals. Not only physical health but also mental health has relation with Green Areas around. Various resources in past has examined relationships between green space and a variety of health outcomes with many researchers finding benefits in terms of levels of physical activity and relationships with levels of obesity, mental health, and other health conditions. Green area survey is important and should be done in regular period. With the help of GIS Software green area can be calculated accurately and quickly. For the years 2012, 2016, and 2020, multi-temporal Landsat TM/OLI satellite pictures were used to categorize Land Use/Land Cover (LULC) classes in Rajshahi City Corporation, Chattogram City Corporation and Rangpur City Corporation, a shift from Green Areas to an urban region, and the directional distribution of urban areas and Green Areas. All Landsat pictures were downloaded at a maximum of one-month intervals to eliminate seasonal variations. The LULC maps were classified using the supervised maximum likelihood classification technique. ArcMap 10.6.1 software was used to prepare the maps and MS Excel software was use to do the analyses. The classified maps show a drastic decrease in green areas in each of the selected city corporation and a rise of urban land use. Rajshahi City Corporation, Chattogram City Corporation and Rangpur City Corporation has seen 12%, 17% and 36% decrease in green areas accordingly in the 8 years’ (2012-2020) time span.