Wetlands are one of our most important yet endangered and under-valued
environments. Sustainable management of wetland ecosystem is necessary as it
serves the important functions such as food storage, water quality maintenance
and providing habitat for different species of wildlife. More than 75% of commercial
fish species require wetlands to complete part of their life cycle. Many local
and migratory birds also utilize coastal wetlands as breeding and roosting
sites as well as providing food and habitat for many animal and plant species.
Wetlands are also a valuable buffer against coastal erosion, storm surges and
flooding. A study has been carried out to delineate the wetland, in and around
Namkhana island of West Bengal, India, using IRS LISS-III data of the year 2010
and ETM data (2013). The data have been analyzed and the wetlands have been
qualitatively characterized based on turbidity and aquatic vegetation status
also recognizes pond area by Normalized Difference Pond Index, delineates open
water features and enhances their presence in remotely-sensed digital imagery.
Thus this study highlights the usefulness of remotely sensed data for wetland
mapping, seasonal monitoring and characterization.
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