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针对传统林业资源统计数据多采用文字和表格等方式表达,其形式单一、可视化程度低,难以体现林业资源统计数据的空间分布特性等,文中提出构建基于网络地理信息系统(Web GIS)的林业资源统计数据可视化系统,介绍了该系统关键技术、设计方法、运行效果,并提出了系统发展与研究展望。该系统采用B/S模式下的3层架构:数据层存储了4年的世界森林资源统计数据和中国8次森林资源清查数据,并采用空间数据和属性数据分离存储的模式;后台服务层通过Arc GIS Server和Web Service相结合的方式为前端提供Geo JSON格式数据接口;前端页面层利用Arc GIS API for Java Script实现具体模块。为提高可视化效果,采用Highcharts框架对数据进行图形化展示。该系统丰富了林业统计资源数据的可视化方式并有效表达出林业资源统计数据的空间分布性,提高了林业资源统计数据可视化程度。
In view of the fact that the traditional statistical data of forestry resources are mostly expressed in forms such as words and tables, the forms are single and the degree of visualization is low, it is difficult to reflect the spatial distribution characteristics of the statistical data of forestry resources. The paper proposes to construct the forestry resources based on Web GIS Statistical data visualization system, describes the key technologies of the system, design methods, operating results, and put forward the system development and research prospects. The system uses a three-tier architecture in B / S mode: the data layer stores four years of world forest resources statistics and eight times of China’s forest inventory data, and uses spatial data and attribute data to separate storage modes; the background service layer passes ArcGIS Server and Web Services combine the front end to provide Geo JSON format data interface; front page layer ArcGIS API for Java Script to achieve specific modules. In order to improve the visual effect, the data is graphically displayed by Highcharts framework. The system enriches the visualization of forestry statistical resources data and effectively expresses the spatial distribution of statistical resources of forestry resources and improves the visualization degree of forestry resources statistics.