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由Lophodermium maximum B.Z.He.et Yang引起的红松(Pinus koraensis sieb.et zudd.)落针病,在我省的发生面积逐年扩大,较为严重地威胁了红松人工林的生产。本文通过主要林分因子大致相同的三块典型样地51株调查生物量的样木、11株解析木样木、39株标准木样木,研究由红松落针病的为害而造成的不同患病级间的生物量损失与材积损失。得出,林木因落针病所引起的损失是一整体的动态损失,是一个以时闭(年)为系数的累积变量。同时拟合出各患病级林木的器官生物量方程,对防治森林病害具有一定参考价值。
Pinus koraensis sieb.et zudd., Caused by Lophodermium maximum B.Z.He.et Yang, has been expanded year by year in our province and threatened the production of Korean pine plantation more severely. In this paper, 51 samples of woody biomass, 11 samples of wood-like wood and 39 samples of wood-like wood from three typical sample plots with the same main stand factors were used to study the differences caused by the damage of red pine needles Loss of biomass and volume loss between diseased stages. It is concluded that the loss caused by forest needle drop is an overall dynamic loss, which is a cumulative variable with time closure (years) as a coefficient. Simultaneously, the organism biomass equation of each diseased tree was fitted, which is of certain reference value for the prevention and treatment of forest diseases.