摘要
过去常用立地质量对林分生长进行评价，实践证明，对一些速生经营强较高的人工林可能欠缺，尤其是经措施，在很大程度上提高了平原地区杨树的地位等级和生长量。
Data of growth were collected from 136 sample plots of intensively cultivated poplar plantations, 8 items and 32 categories of site quality and management intensity were set up as quantitative factors. The collected data of growth were processed in the way of quantification. A trapezoidal scoring table for the site quality and management intensity was compiled by means of programed computation. The correlation coefficient testing shows that the established regression equation for prediction is reliable. According to the testing of partial correlation coefficient, the selected items are basically main factors. The established table may offer scientific evidence for the intensive poplar management.
出处
《林业科学研究》
CSCD
北大核心
1989年第4期395-401,共7页
Forest Research
关键词
杨树
数量化
立地质量
经营强度
poplar
quaatification
site quality
management intensity
