Identification of urban expansion patterns in Bangkok metropolitan region through time series of landsat images and landscape metrics

Abstract

Urban expansion has different patterns which affect land development and police planning. Increasing in the number of the population puts force to expand the built-up areas in the Bangkok Metropolitan Region (BMR) predominantly in vicinities of Bangkok, which causes several problems in terms of physical and social aspects. Therefore, understanding the pattern of the urban expansion is a key challenge to allocate enough infrastructure and respond to the land demand for inhabited people in this area. The classification of the pattern of urban expansion analyzed from Landsat5-TM images in 1988, 1993, 1998, 2003, 2008, 2011, and 2014 respectively. The urban area, built-up construction, was mainly extracted by supervised classification and was analyzed patterns using spatial landscape metrics. The result could be found that the origin of the urban area of the BMR was established in the east of the Chao Phraya River with a clustered or radial settlement. Each province of the BMR is extended from the urban area itself, from the center of the city, and is also connected together via the main road as a linear settlement. Finally, a dispersed settlement could be discovered in the areas which are far away from the road network like an urban sprawl. © Springer Nature Switzerland AG 2020.