Depending on the geographic locale of the Indian Sundarbans was diversified in terms of salinity which directly reduced the growth of mangrove vegetation. Above-ground biomass estimation was carried out for five even–aged dominant mangrove species (Sonneratia apetala, Excoecaria agallocha, Avicennia alba, Avicennia officinalis and Avicennia marina) in western and central sectors of Indian Sundarbans during 2011 to 2013. Among the selected species, A. marina (60.15 tha-1) showed maximum above-ground biomass in western sector followed by A. officinalis (55.88 tha-1), S. apetala (52.85 tha-1), A. alba (51.55 tha-1) and E. agallocha (26.41 tha-1). In central sector, the maximum above-ground biomass was observed in A. marina (49.74 tha-1) followed by A. officinalis (44.46 tha-1), S. apetala (42.52 tha-1), A. alba (36.96 tha-1), and E. agallocha (17.94 tha-1). The growth was more in the species of western Indian Sundarbans compared to the central Indian Sundarbans. The relatively higher values of AGB in the western sector compared to the central sector are reflections of salinity.