Decomposition of plant’s litter changes the water chemistry of wetlands in dhemaji district of Assam

This study was done for the aim to bring notice to local people about the reason of degrading wetlands and suggestion to develop this degraded wetland to get benefits. Submerged plants are the generator of oxygen in the aquatic system. Siltation being the major cause, the beel turns into unproductive areas with extensive weed cover. In controlled growth situation either naturally or by human interference aquatic plants can purify water, but if uncontrolled growth takes place they can reach the levels of pests & are frequently regarded as aquatic weeds aquatic plants can reduced DO, BOD, pH. Many terrestrial plants are also found in the ecotone region of wetlands the aquatic plants litters degrading on beel change the composition of water quality. The results are important in the context of the possible adverse impacts on aquatic life. Water sample were collected and some parameter were analyzed on spot with water analysis kit and soil samples were collected for laboratory analysis. Water and air temperature were recorded with thermometer. D.O value was as low as 2mg/l-10mg/l. Mg content was as low as 0.48mg/l-26.0mg/l. Total alkality ranges from 20mg/l-27mg/l. Soil phosphorous minimum content is found to be 0.1mg/l & highest 80mg/l which shows the unproductively of water bodies