农业生态经济系统综合评估的方法与技术应用研究

以福建省为例进行农业生态经济系统综合评估研究.借助GIS、RS工具和多种数学方法完成了对原始指标数据采集与甄别的大量基础工作;构建了包括总体层、状态层、基准层、变量层、要素层等5个层面的综合评估指标体系框架;将原始组合指标经无量纲化后生成可资对比的指数;采用熵权法确定了各指标的权重并实现了指标体系的逐层收敛;在GIS平台上完成了对各市(县)农业生态经济水平的空间分布分析,从中揭示的一些极端现象可为不同层面的农业决策者有针对性地总结经验和发现偏差提供参考.

Methods and techniques for comprehensive agricultural eco-economic system assessment

A research was conducted on the comprehensive assessment of agricultural eco-economic systems in Fujian Province. Using GIS & RS along with mathematical methods, a series of data collection and discrimination of original indicator data was performed. A frame of comprehensive indicator system of assessment of agricultural eco-economic system (with 5 levels including top, status, norm, variable and element) was set up. Original combination indicators were transformed into comparable indices by the de-dimensionalization. The indicator weight was ascertained based on entropy weight method and the indicator system gradually converged. Using GIS platform, the spatial distribution of the agricultural eco-economic levels for the cities/counties were analyzed and extreme phenomena exposed. Such information can be used as a guiding reference at different levels of agricultural decision-making.