福建省县域农业生态系统的能值空间差异分析  

Spatial variation in agro-ecosystem based on county level emergy analysis in Fujian Province

作　　者：胡晓辉[1] 黄民生[1] 张虹[1] 任婵娟[1] 

机构地区：[1]福建师范大学地理科学学院,福州350007

出　　处：《中国生态农业学报》2009年第1期155-162,共8页Chinese Journal of Eco-Agriculture

基　　金：国家社会科学项目(05BJY075);福建省自然科学基金项目(D0610004);2008年度福建师范大学地理科学学院研究生创新基金项目资助

摘　　要：采用能值分析方法,以福建省县域单位农业生态系统为研究对象,建立了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GIS技术对该省67个县(市)样本的农业复合系统各方面进行了等级划分和空间差异表达。结果显示该空间差异存在着明显的地理与地势指向性,沿海低地县(市)在农业经济发展水平和农民生活水平上有绝对优势,但优势可持续力很弱;内陆山区县(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。并据此将福建省农业生态系统在空间上划分为闽西北山区、闽东北沿海及近海地区、中部内陆地区和闽东南沿海地区4个农业生态特征区,为区域农业生态规划与决策管理提供较为科学的依据。This paper used emergy analysis method at unit county scale to study the spatial variation in agro-ecosystem in Fujian Province. The paper established 13 emergy indicators grouped into 4 levels of agro-ecological economic systems, and selected major emergy evaluation indices by component analysis. Indices and ranks were created for agro-ecosystem development at different aspects for the 67 counties using GIS platform. The result shows clear spatial variations in the agro-ecosystems. These variations are driven by geographical and hypsographieal factors. Low-lying coastal counties / cities have absolute advantage in agro-economic development and farmers＇ living standards. These advantages are, however weak and can therefore be hardly sustainable. Some inland mountainous counties / cites have obvious regional comparative advantage in natural agro-environmental condition and sus- tainable development capacity. Based on the results, these are spatially classified into 4 groups. The study provides scientific bases for regional agro-ecological planning and management decisions at all ranks.

关 键 词：能值分析 农业生态系统 GIS 空间差异 县域 福建省 

分 类 号：S181[农业科学—农业基础科学]