Design and Application of Automatic Monitoring System of Water Environment Using GIS

in order to achieve more effective management and monitoring of water environment, an automatic system is designed for the environment Heihe River Basin Zhangye through GIS (geographic information system). The EFDC (environmental fluid dynamics code) model used establish annual average data permanganate index Yingluoxia, Gaoya hydrological station, Liubaqiao from 2015 2019 are fit verify quality model. trend suggests that simulated three observation points close measured data. fitting degree reveals R curve 0.793, while station higher than 0.8, with good degree. relative error between value (mg/L) small, change basically consistent, prediction small. successfully established applied early warning total phosphorus index.