浙江省土地环境与生猪分布的相关特征及其生态学意义

研究表明,各县单位土地面积上的生猪年末存栏效与土地类型单位间的数量对比结构(丘陵山地面积÷土地总面积×100)星极显著负相关(r=0.7806,n=62),但与相应的农业人口关系甚少(r=0.1380,n=62),如果考虑到滨海区两个县的土地最适宜于植棉的特殊性,计算中予以去除,则相关系数为0.8663(n=60)。 全省九个地区的土地类型单位间的数量对比结构与生猪在33年中的增长倍数具极显著的相关性(r=0.7925,n=9)。多元相关分析表明,生猪增长倍数、单位土地面积上的生猪年末存栏数、单位土地面积上的粮食产量、土地类型单位间的数量对比结构之间存在着显著的相关性。 另外,优良生猪品种的形成与分布,也受土地环境的深刻影响。 据此认为,土地与生猪之间处于某种相对稳定的生态平衡。根据这种平衡关系布局养猪业,当更为合理。

A CORRELATIVITY BETWEEN LAND ENVIRONMENT AND DISTRIBUTION OF PIG AND ITS ECOLOGICAL SIGNIFICANCE IN ZHEJIANG PROVINCE

It is found that the amount of pig per sauare kilometer is very strongly cor-rlated with land structure (acreage of hilly region × 100/total acreage of land, thesame below) (r= 0.7806, n=62) , but little related with agricultural population(r= 0.1380, re =62) . If the specific properties of land in two coastal regions areconsidered, the correlation coefficient increases up to 0.8663 (re =60).And there is a fairly high correlation between the rate of development of pig and land structure (r= 0.7925,n= 9 ). I...