【摘要】 为动态、准确获取区域农业生产的投入结构、产出水平、经济效益等信息,在时空数据库支持下,以开源SharpMap为地图服务器,利用ASP.NET(C#)语言,建立农业经济监测与评价系统(SHAEWS),SHAEWS的构建包括农业投入产出监测数据库和模型系统两部分。数据库由样本农户动态监测数据、地形图数据和元数据组成。模型系统包含作物数据聚合与分析模型、轮作茬口识别及数据聚合分析模型、柯布-道格拉斯模型和综合评价模型。SHAEWS包括样本数据采集与编辑、样本数据检验、作物评价、茬口评价、投入产出定量模型分析、时序分析、区域分析、报表输出、元数据浏览等9个功能子系统。结果表明,该系统能够把样本监测数据与地图数据相结合,并通过模型运算,实现区域农业投入产出等信息的在线共享、评价与服务。更多还原

【Abstract】 In order to dynamically and accurately obtain the information of input structure,output level,and economic benefits of regional agriculture production,based on the spatial-temporal database and the open source map server of SharpMap,the WebGIS-based information system for investigation and evaluation of economic situation of regional agriculture(SHAEWS) was developed with ASP.NET(C#).The construction of SHAEWS was divided into two parts:agricultural input-output database and model system.The database was composed of sample monitoring data,relief map data and metadata.The model system covered crop data analysis and aggregation model,crop stubbles extraction and analysis model,Cobb-Douglas production model,and comprehensive evaluation model,etc.SHAEWS included nine functional subsystems named as sample data acquisition,sample data examination,crops evaluation,crop stubble evaluation,crops input-output simulation with Cobb-Douglas production function,time series analysis,spatial analysis,data report,and metadata browsing,respectively.The results show that SHAEWS can combine sample monitoring data with map data and through relevant model calculations,can achieve the on-line sharing,analysis,evaluation and consultant service of agricultural input-output information.更多还原