摘要
以长白落叶松（ＬａｒｉｘｏｌｇｅｎｓｉｓＨｅｎｒｙ）人工林为研究对象，利用松江河林业局设置的８块团状枝解析标准地作为基础数据，采用树干一致性削度方程的研究方法，建立了能预估任意部位的树冠体积Ｃｖｈ）、树冠横断面面积Ｃａ（ｈ）及树冠表面积Ｃｓ（ｈ）的一致性树冠体积／冠形方程系统。由２１７株伐倒木树冠资料采用非线性回归方法建立了预估全树冠方程、某一指定高度以上的树冠体积、某一指定高度处的累积的横断面面积方程及树冠表面积方程系统，并根据一致性预估的原则，分别模型预估了树冠的形状系数。通过预测树冠的体积及其相关的测树因子用来构造单木竞争指数。
On the basis of study on eight branch-analytical sample plots for Larix olgensis Henry of Songjianghe Forest Bureru, using the research methods of stem that was compatible with the prediction of taper equation, a compatible crown volume and taper equation system to estimate total crown volume, crown volume above a specified height, cumulative crown sectional area and cumulative crown surface area at a specified height are presented The eqations to estimate total crown volume, crown volume above a specified height, cumulative crown sectional area and cumulative crown surface area at a specified height are developed by regression, using the data collected on crowns of 217 felled trees According to a compatible rules, crown taper indices were predicted using individuel model The crown volumes and assoiciated measures can be used to compute indices or to compute other measures such as wildlife habitat suitability or insect damage potential
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1996年第6期14-20,共7页
Journal of Northeast Forestry University
基金
国家自然科学基金资助项目
关键词
长白落叶松
树冠
体积
横断面面积
表面积
Larix Olgensis Henry
Crown volume
Crown sectional area
Crown surface area
Crown taper indices
