| 云南八角立地类型划分 |
| |
| 引用本文： | 陈炳林.云南八角立地类型划分[J].经济林研究,1993,11(2):48-51. |
| |
| 作者姓名： | 陈炳林 |
| |
| 作者单位： | 西南林学院 昆明 |
| |
| 摘 要： | 选用海拔、坡度、坡位、土壤类型、土层厚度、土壤中速效磷含量作为云南八角立地类型划分的初终因子,将各因子分级,按主导因子原则应用逐步回归方法,筛选出海拔和土层厚度两个主导因子,并建立了最优回归方程。根据最优回归方程估测了两个主导因子的7个等级,划分成12个立地类型的单株风干果重量。根据产量对各立地类型进行分析和评价。
|
| 关 键 词： | 八角 立地类型 云南 |
Site Type Classification For Illicium verum In Yunnan |
| |
| CHEN BINGLIN,Southwest Forestry College.Site Type Classification For Illicium verum In Yunnan[J].Economic Forest Researches,1993,11(2):48-51. |
| |
| Authors: | CHEN BINGLIN Southwest Forestry College |
| |
| Abstract: | The site of Illicium verum in Yunnan were classified into 12 types by applying stepwise regression analysis. Seven factors, i.e., slope gradient, sampling site, soil group, soil layer thickness, and content of rapidly available phosphorus were selected as initial variables. By grading these variables and using the principal factor method, elevation and soil layer thickness ( with 7 grades ) were determined to be principal factors, on the basis of which the optimal regression equation was established. Each site type was evaluated according to the estimated yield derived from the optimal regression equation. |
| |
| Keywords: | Illicium verum Site type Quantitative study Yunnan |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
