A study on the Water quality and the change detection of aquatic vegetation of Satajaan beel, North Lakhimpur, Assam

Abstract

Abstract Water quality assessment is one of the important processes to understand the environmental status of the wetland. The study is carried out to analysis of the water quality and change detection of aquatic vegetation in Satajaan Wetland, situated in Lakhimpur, Assam in the floodplain of Ranganadi river. 10 water sample has been collected from the selected samples station through random sampling method to understand the quality of water. For the study we have assessed Physical parameters like temperature, pH, Electric Conductivity, Total dissolved solid and chemical parameters such as Salinity, alkalinity, CO2, Dissolved oxygen, Cl-, Total Hardness, Ca2+, Mg2+, Na+, K+, SO42-, NO3-, F-, PO43 etc. For the statistical analysis of the water parameter, we have done Correlation coefficient analysis, PCA and HCA. WQI of the study area has been also observed by using weighted arithmetic method. Along with the water quality parameter we also try to analysis the change of area of aquatic vegetation in the study area using NDVI. From the NDVI calculation it has been observed that the area of the aquatic vegetation in the study area has been decreaded year by year. The rate of degradtion of aquatic vegetation in the study area is calculated 2.84 acer or 7.84%.