Abstract
Mangroves are the biotic fence of estuarine belts consisting of salt-tolerant trees and shrubs that grow in intertidal zones can be regenerated naturally as well as artificially. Mangrove regeneration refers to the process of restoring or rebuilding mangrove ecosystems that have been already degraded, damaged, or lost from their native place through the monitoring of geomorphological, taxonomical, pedological, ecological aspects. Primary objective of this study lays on the remote sensing application through several important health monitoring indices (NDVI, SAVI, OSAVI & VCCI) over the minute part of Indian Sundarbans to get proved on the possibility of mangrove regeneration. Change detection analysis on indices proves that there is possible growth and development in mangrove colonization over the same. Secondary objective is to comprehend the association of field related study with the remotely sensed data on species diversity assessment over the same where, the native species are Peyara Bain, Jat Bain, Kalo Bain, Tora, Horgoj Kanta, Kankra, Goran, Khalisi. Latter objective is associated with the tertiary one that unveils the correlation between several physico-chemical properties of soil samples taken from the field with the species accommodation. Textural classes are ranged between clay to silty clay that helps to get foundation of hard wood based species (Bain type) specifically with the salinity ranges between 200ppt (Site 2) to 633ppt (Site 1) approximately that presents the zone is highly saline zone as specifically Bain types can sustain high salinity. Importance Value Index (IVI) & species diversity indices have been run to support whether the zone is diversified or not. Equilibrium between deforestation and regeneration through reforestation has to be attained in near future as deforestation for the livelihood purposes exist so that this newly born island named Dorabagda forest, upper part (Gopalganj) of Kaikhali village would be the best example of mangrove regeneration site.