摘要
最近的研究表明,单位国土面积上的羊绒产量不但与草地资源、温度、湿度和降雨 量等自然环境因素存在关系,还与社会经济因素和土地利用方式等非自然因素相关。通过实地 调查和统计分析,发现中国羊绒生产的分布具有地带性,与中国土壤、植被地带性分布及气候 的渐变方向是一致的。本文对与羊绒生产分布相关的18个因子进行主成分分析,认为温度、湿 度、降雨量、积温等气候因子与5个草地资源因子是制约羊绒生产及分布的最主要因子。
Recent study indicated that the cashmere yield per unit area not only was subjected to environmental factor, such as grassland resources, temperature, humidity, and rainfall etc. , but also was subjected to some social factor, such as economy, way of land utilization and so on. Though mvestigation and Statistical cmalysis, The study also exposed that the geographis changing direction of cashmere production was accord to that of soil and vegetation type. The results showed that “Environmental factors”-temperature, humidity, rainfall, heat and grassland resource factors were the key limited factor among 18 faetors analyzed in this paper.
出处
《家畜生态学报》
2005年第5期41-46,共6页
Journal of Domestic Animal Ecology
基金
国家重点基础研究发展规划资助项目(G2000018602)
关键词
羊绒
相关因子
地带性分布
主成分分析
Cashmere
correlative factor
regional distribution
principal component analysis