基于网络地理信息系统的林业资源统计数据可视化系统设计

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（WebGIS）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ArcGIS Server和Web Service相结合的方式为前端提供GeoJSON格式数据接口；前端页面层利用ArcGIS API for JavaScript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。

Design of Forestry Resources Statistical Data Visualization System Based on WebGIS

Considering the disadvantages of traditional forestry resources statistics expression that most adopts the texts and tables with low degree of visualization and difficulty to reflect of spatial distribution of forest resources statistics, the article puts forward to construct forestry resources statistical data visualization system based on WebGIS, introduced the key technology, design methods and operational effects, and prospected its development and research. The system adopts B/S three layer architecture mode:the data storage layer stores the four years of world forest resources data and eight years of China forest resources inventory statistical data, and the separate storage mode was used for the spatial data and attribute data. The back service layer provides the data of GeoJSON format to front-end by combining ArcGIS Server and Web Service. The front-end layer uses ArcGIS API for JavaScript to achieve specific modules. In order to improve the visual effect, the system uses Highcharts framework for graphical display of data. The system has enriched the visualization method of forest resources data, and also has effectively expressed the spatial distribution of forest resources statistics, which has improved the degree of visualization for forestry resources statistical data.