摘要
本文应用主分量分析法对吴忠新灌区生态经济类型进行了初步划分与研究。分析结果表明:在社会、经济、生态因素的综合影响下,该区可分为五个明显不同的生态经济类型区:1、城郊型农业区;2、过渡城郊型衣业区;3、农、牧结合区;4、农、林、牧结合区;5、干旱风沙区。
In this paper the PCA methods are applied to the classification of ecologi-cal economic types. The results show that under the comprehensive impact of social,and ecological factors this area can be divided into 5 types:1/suburban agricultural area;2/ transitional suburban agricultural area;3/the area of animal husbandry and agriculture; 4/the area of forestry,livestoch breeding and agriculture;5/dry sandy wind area.
出处
《农业科学研究》
1992年第4期65-70,共6页
Journal of Agricultural Sciences
关键词
主分量分析
生态经济类型
新灌区规划
PCA methods
ecological economic type
prograrmme of new irrigation area