【摘要】 在区域土壤环境时空数据库支持下,以G eoW eb为地图服务器,利用A SP、JavaScript和HTM L程序语言,建立基本农田土壤环境质量评价系统(PFSEG IS),PFSEG IS的构建包括基本农田土壤环境数据库和模型系统两部分。数据库由样点监测数据、地形图数据和元数据组成。模型系统包含单因子评价模型、综合评价模型和空间插值模型。PFSEG IS包括样本数据采集、样本评价、区域模拟、信息统计、元数据浏览5个功能子系统,把监测数据与地图数据相结合进行空间分析处理,并通过模型运算,实现了基本农田土壤环境质量信息的在线共享、评价与咨询服务。更多还原

【Abstract】 Based on the support of the regional soil spatial-temporal database and the map server of GeoWeb,the WebGIS-based information system for evaluation of soil environment in prime farmland(PFSEGIS) was developed with ASP,JavaScript and HTML.The construction of PFSEGIS is divided into two parts: soil environmental database and model system.The database consists of sample monitoring data,relief map data and metadata.The model system covers single index evaluation model,comprehensive evaluation model,and spatial interpolation model,etc.The PFSEGIS includes five functional subsystems named as sample data acquisition,sample data(evaluation),regional simulation,data statistical analysis and metadata browsing,respectively.Combining sample monitoring data with map data,spatial analysis and relevant modeling process were conducted.PFSEGIS can be used for the on-line sharing,evaluation and consultant service of soil environmental information.更多还原