【作者】 黄新峰；

【导师】 亢新刚；

【作者基本信息】 北京林业大学 ， 森林经理， 2004， 硕士

【摘要】 天然云冷杉林是我国寒温带常绿针叶林中分布最广的森林类型。它不仅能为国民经济提供各种经济用材，同时也是重要的造纸和人造纤维的原料，又由于地处高海拔，因而在水源涵养、保持水土、维护生态平衡等方面也起着重要作用。本文以吉林省汪清林业局和白河林业局的云冷杉林为例，共设置57块标准地对影响更新的多种因素进行分析比较，从中筛选变量构造线性回归方程，从9个因素中筛选出三个重要因素，蓄积量、海拔高度和腐殖质厚度。 对金沟岭林场的更新幼树株数分布、年龄和高度特征、对地径和胸径之间的关系进行了比较分析。对全径阶株数分布进行分析探讨，同时运用数学模型，进行模拟，结果显示，多个曲线的拟合效果良好。全林直径分布显示，本地区云冷杉林的更新能够保证森林的正常演替，达到可持续经营的目的。更多还原

【Abstract】 Natural Spruce-Fir Mixed Stand was the most universal forest type in temperate zero and Frigid Zone in China. It not only supplied various timber products, but also was very important materials of industry of paper and artificial fibre; because of its high altitude it played an important role in water and soil conservation, maintaining ecological balance. This paper selected the natural spruce-fir mixed stands in Wangqing Forestry Bureau and Baihe Forestry Bureau Jilin province as a research object.57 standard plot were settled. Through analysis and comparison, 3 factors were superior among 9 factors. That was stand volume, altitude and thickness of humus.Then the author analyzed the seedlings distribution, age and height structure. The relation between base diameter and the breath-height diameter was researched. All diameter class distribution was modeled with mathematical methods. The results showed modeling were desirable. From the number distribution of all stand, the conclusion was got, which was that the forest of this area could finish the natural succession and reached the goal of sustainable forest management.更多还原