Abstract
Water is an essential ingredient of life. Currently, this natural resource has been under pressure from the socio-economic development. This paper presents the application of remote sensing technology to monitor organic pollutants in water from Hoa An bridge to the confluence of the Saigon and Dong Nai River. The river water indicator was surveyed as Dissolved Oxygen (DO) and was calculated via spectral channels of Landsat 8 at the time of January 21, 2014. Research methods was approached in the direction of: Qualitative simulation from the spectral characteristics, and quantitative simulation based on regression analysis. The results showed that the concentration of the observed indicator DO had a linear correlation with the ratio based on green band B3 and red band B4 of Landsat 8 image. From the regression, this study established the spatial distribution maps to simulate organic pollutants in rive water of the studied area. The classification system was built according to the standards of QCVN08:2008/BTNMT. The study results shows that the application of remote sensing monitoring river water quality is a good support tool for environmental management purposes, to help policy-makers to see and have better decisions for the local socio-economic development.
Highlights
Water resource is an essential part of life, determining the success of strategy, project, plan for socio-economic development, assuring the national defense and security
This paper presents a study on the spectral properties of remote sensing images, incorporating image modification indices to detect changes in organic properties within river surface water, and to analyze regression correlations to determine the concentration of pollutant spatially distributed across the river
Remote sensing is a feasible method for monitoring surface water organic pollution from the spectral characteristics associated with regression analysis
Summary
Water resource is an essential part of life, determining the success of strategy, project, plan for socio-economic development, assuring the national defense and security. This precious, important natural resource is scarce and under pressure from economic and social development. Water are used in agricultural and industrial activities, manufacturing, entertainment and environment that need fresh water. Fresh water is a renewable resource; the supply of fresh and clean water in the world as well as in Vietnam is gradually decreasing. Water demand has surpassed supply in some parts of the world, while the world's population continues to increase, making water demand rise. Awareness of the importance of water protection for ecosystem needs
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