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辽宁东部山区人工红松林,大多数是通过次生林改造、人工栽植红松而发展起来的。这些人工红松林,一般地可划分为3种林型: 1.异龄复层阔叶红松林(简称林型Ⅰ) 2.同龄阔叶红松林(简称林型Ⅱ) 3.红松纯林(简称林型Ⅲ) 为了进一步探讨3种林型林地生产力的高低,我们于1974年设立了3种林型固定观察地,进行深入观察,10年的观测结果作以整理与分析。
The artificial korean pine forests in the eastern mountainous areas of Liaoning Province were mostly developed through secondary forest transformation and artificial planting of Korean pine trees. These artificial Korean pine forests can generally be divided into three types of forest: 1. Aging cladded broad-leaved Korean pine forest (referred to as forest Ⅰ) 2. Same age broad-leaved Korean pine forest (referred to as forest Ⅱ) 3. Pure Korean pine (Type III for short) In order to further explore the productivity of the three kinds of forest types, we established three kinds of fixed observation places in 1974 for further observation. The results of 10 years of observation were collated and analyzed.