摘要
以位于北方农牧交错带的内蒙古林西县16个乡镇为样本,利用因子分析方法对所选指标体系进行筛选,从26项指标中筛选出7项综合指标,消除了由于各因子的相互作用引起的噪音干扰,降低各因子之间的重叠性。在此基础上,根据生态经济区划分的相似性原则、区域共轭性原则和自然区域完整性原则,运用灰色星座聚类法对研究区生态经济系统进行聚类分区,林西县生态经济系统可以划分为3大区域:中东部河谷平川粮食经济作物区、中南部低山丘陵牧粮综合发展区及西北部中山牧粮果水保林区。排序检验的结果表明聚类结果基本正确,能较好地反映研究区农业生态经济类型的客观状况。最后,根据各分区不同的生态经济特征,对各区的开发对策及今后的发展方向进行了详细的分析与评述。图1,表5,参6。
Linxi county, located in the north-east of Inner Mongolia, is taken as a case. The factor analysis is used in this paper to filter the indexes system which have been chosen. Few indexes are selected those explain most of the variance observed in a much larger number of socioeconomic-environmental variables. On this basis and acoording to comparability rule, regional conjugation rule, nature field integrality rule in eco-economic region divisiom, the villages in Linxi county are classified by using greyconsteUation cluster analysis. Seven synthestic indexes including most information and reduced interference between associated indicators are selected out of 26 indexes. Linxi hilly-mountain ecosystem should be divided into three agri-eco-economic regions with different integral functions. The three regions are low hilly-mountain husbandry-food agri-eco-economic region, mid-mountain husbandry-food-fmid-water conversation agri-eco-economic region and river valley plain food-crops principal yield area. At last, the policy and measures matched with divisional regions are brought forward.
出处
《农业系统科学与综合研究》
CSCD
2008年第1期78-82,共5页
System Sciemces and Comprehensive Studies In Agriculture
基金
国家重点基础研究发展规划资助项目(G2000018607)
