摘要
通过求出侧柏叶面积的一元回归模型 ,定量说明济南近郊山体侧柏树的生态效益、经济效益。
By means of regression equation with one unknown quantity for leaf area of Biota orientalis,ecological and economical benefits of this tree species were quantitatively obtained.These have showed the value of ecological forests for public welfare.
出处
《防护林科技》
2001年第2期15-16,共2页
Protection Forest Science and Technology
