论文部分内容阅读
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，或者用来预测野生动物对栖息地的适应性和测定昆虫危害的潜能
Taking Larix olgensis Henry plantation as the research object and using the analytical standard of 8 clade branches set by Songjianghe Forestry Bureau as the basic data, Cvh), crown cross-sectional area Ca (h), and canopy surface area Cs (h). The total crown equation, the crown volume above a certain height, the cumulative cross-sectional area equation at a given height, and the canopy surface area equation system were established by non-linear regression with 217 regressed timber canopy crowns. The principle of sexual prediction, respectively, the model estimates the shape coefficient of the crown. The ability to construct single-tree competition indices by predicting the size of the canopy and its associated tree-finding factor, or to predict wildlife habitat suitability and potential for insect damage detection