基于组件式GIS的冬小麦遥感估产系统的开发研究

为给政府管理部门和冬小麦生产者提供适用于生产管理与决策支持的空间信息支持，基于组件式GIS的二次开发技术，利用面向对象的可视化编程语言Borland Delphi，设计开发了冬小麦遥感估产计算机软件系统。该系统包括四大子系统模块：数据管理模块、参数运算与模型模拟模块、信息统计与分析模块以及专题图制作与输出模块。通过系统功能和输入遥感图像数据，可实现大范围的冬小麦种植品种区划、面积分布等基本农情信息的简单查询；通过图像计算处理获取植被指数信息，结合样点参数建立长势和产量估算模型，可以进行实时的长势分级监测和产量预报，并且可以输出遥感监测分级专题图等信息产品。该软件系统的开发，是对作物遥感估产方法进行定量化、信息化研究的积极探索。

Development of Winter Wheat Yield Estimation System by Remote Sensing Based on COMGIS

The technology system for winter wheat yield estimation by remote sensing based on COMGIS technology, and prepared using object oriented visual programming language Borland Delphi7.0. It consisted of four sub modules:a simple query and display module, data analysis and database management module, computing and Model Simulation module parameters, which were the core module of the system, as well as thematic map production and output modules. Through the system functions and the input of remote sensing image data, simple query functionality can be realized such as wide range of winter wheat varieties division, the area information distribution and other basic agricultural situation; and the same time the vegetation indices (VI) obtained from the input image computing, combined with sample point parameters, the Growth and yield estimation model could be established, and could be useed for growth monitoring and yield estimation, further the classification monitoring thematic maps and other thematic data, as the final products could be output from the system. The implementation of technology system, is necessary to explore the agricultural statistics, and information development.