基于GIS和EMA的县域农业生态系统空间差异研究——以福建省为例  

Spatial Difference in Agro-ecosystem on County Scale Based on Emergy Analysis——A Case Study on Fujian Province

作　　者：胡晓辉[1] 黄民生[1] 

机构地区：[1]福建师范大学地理科学学院,福建福州350007

出　　处：《江西农业大学学报》2008年第2期358-366,共9页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家社会科学基金资助项目(05BJY075);福建省自然科学基金资助项目(D0610004)

摘　　要：为了从根本上了解区域内部生态系统的网络运行效率和发展潜力的空间差异,采用EMA(能值分析)方法,以福建省县域单位农业生态系统为研究对象,建立反映农业生态经济系统4大层面的13项能值指标,并运用主成分分析法筛选出主要能值评价指标,结合G IS(地理信息系统)技术,对该省67个县(市)样本的农业各层面综合发展水平进行等级划分和空间差异分析。结果表明:沿海与内陆县(市)在农业发展各层面上都存在着明显的空间差异;沿海低地县(市)在农业经济发展水平上和农民生活水平上有绝对优势,但这种优势可持续力很弱;山区贫困县(市)在农业自然环境条件与可持续发展性能上有明显的区域比较优势。分析结果为区域农业生态规划管理与决策提供客观的数据依据,对区域产业布局与可持续发展战略有一定的实际意义。In order to fundamentally understand the spatial difference in the operating efficiency of regional interior ecosystem network and the development potential,by using EMA （Emergy Analysis） method and takes county scale unit agro - ecosystem in Fujian as the research object, 4 levels of 13 emergy indicators for the agro - ecological economic system were established, and using principle component analysis major emergy evaluation indices were selerted. Some indexes and certain ranks were created for the development of the agro - ecosystem at deferent levels according to the 67 county（or city） samples of the province by GIS technology. The result showed that： there is a clear special difference of agricultural development between coastal and inland areas; low -lying coastal counties （or cities） have absolute advantages in the agricultural economic development level and farmers＇ living standards, but these advantages have a very weak sustainable ability. Some poor mountainous counties （or cites） have obvious regional comparative advantages in agriculture natural environment condition and sustainable development capacity. The analysis result provides quantitative bases objectively for agricultural managements and decisions at all ranks, and has the practical significance for regional industry layout and sustainable development strategy.

关 键 词：地理信息系统 能值分析(EMA) 农业生态系统 空间差异 县域 福建省 

分 类 号：S181[农业科学—农业基础科学]