Research On Virtual Geographic Environment Platform For Water Ecological Security Remote Sensing Monitoring

Water ecological security protection and governance is the focus problem of human sustainable development strategy in the 21 st century.At present,Large number of rivers,lakes,reservoirs and other water environment in china are suffering from serious water pollution problems,water ecological security has become one of the most prominent problems ecological security issues.In order to effectively deal with the serious situation of frequent occurrence of water pollution and pollution in Poyang Lake area,it is urgent to improve the capability of rapid and accurate perception of the dynamic change of water environment in the region,early warning of water environmental pollution disaster,status assessment and decision support abilityIn view of the above problems,this paper takes Poyang Lake water ecological security as the background,using virtual geographical environment to study Poyang Lake water ecological security,based on satellite remote sensing data and water ecological security model integrated treatment of visual expression,to explore the feasibility of the construction of Poyang Lake water ecological security for the virtual geographical environment of the key technology.The main data sources are from GF-1,LANDSAT and MODIS satellite remote sensing data,combined with the dynamic monitoring technology of waters and the remote sensing model of water ecological security,this paper analyzed the objectives,functions and implementation ideas of the data environment,model environment,expression environment and collaborative environment in virtual geographic environment.Through the seamlessly interaction with virtual geographic environment simulation and decision support platform,the multi-dimensional dynamic geographical environment is designed,and realized a quick and easy analysis of understanding the geographical environment and monitoring of water ecological security integrated knowledge sharing work platform,and support geometric,physical,and modeling process requirements,as well as geophysical visualization of model results,and the platform is tested preliminary.The construction and research of this platform can provide a new perspective for the monitoring of water ecological security,and at the same time,it provides an effective breakthrough for the deep application of virtual geographic environment theory and technology while enriching the virtual geography environment theory.The preliminary operation of the platform shows that: the virtual ecological environment platform for water ecological security monitoring constructed in this study can meet the needs of remote sensing monitoring of water ecological security.The use of ArcSDE + SQL Server way can effectively manage and integrate multi-source,multi-dimensional,multi-scale massive remote sensing data and basic geographic information data,and it can realize the integrated storage of spatial database and model database.Based on IDL language design and development of water ecological security remote sensing visualization platform can be a very good completion of the data visualization work,which highlight the performance environment of virtual geographic environment.The virtual geographic environment hardware platform built with proprietary hardware facilities can not only connect the virtual geographical environment of the module,enhance the visual sense of immersion,but also can provide researchers of the different levels and decision makers a collaborative work platform to study and explore the water ecological security.