CAJ | 학술논문

以福建省杉木人工林为研究对象，通过固定样地法对不同林龄杉木人工林根系生物量分层调查，探究不同林龄杉木林不同土层根各组分（根兜、粗根、中根、小根、细根）生物量所占全根的比例及随着林龄的变化规律。以R软件构建根各组分最优生物量模型，并通过总量和分量两级联合控制法来建立根各组分相容性模型。结果表明：杉木林根系生物量随林龄的增大而增加，不同根系组分生物量的大小排序为根兜＞粗根＞中根＞小根＞细根，其中根兜和粗根占根系生物量的80％以上，人工林粗根和中根主要分布在20～80 cm土层中。利用R软件构建的非线性相容性模型能较全面、客观地反映根各组分之间生物量的分配关系（R2＞0．77，P＞84?7，e＜0．153），同时解决根各组分模型之间的不相容，提高模型的精度。
이복건성삼목인공림위연구대상，통과고정양지법대불동림령삼목인공림근계생물량분층조사，탐구불동림령삼목림불동토층근각조분（근두、조근、중근、소근、세근）생물량소점전근적비례급수착림령적변화규률。이R연건구건근각조분최우생물량모형，병통과총량화분량량급연합공제법래건립근각조분상용성모형。결과표명：삼목림근계생물량수림령적증대이증가，불동근계조분생물량적대소배서위근두＞조근＞중근＞소근＞세근，기중근두화조근점근계생물량적80％이상，인공림조근화중근주요분포재20～80 cm토층중。이용R연건구건적비선성상용성모형능교전면、객관지반영근각조분지간생물량적분배관계（R2＞0．77，P＞84?7，e＜0．153），동시해결근각조분모형지간적불상용，제고모형적정도。
Based on Chinese fir plantation in Fujian Province, we studied the proportion of root biomass of each compo?nent ( root stake, thick?root, medium?root, small?root, fine?root) with the forest age variation through the fixed sample plot method. We constructed the optimum biomass model of root stake, thick?root, medium?root, small?root, fine?root by using R analysis software. According to controlling the volume and component of root, we built the compatible models and evaluated the models. Results showed that root biomass of the average individual tree decreased with planting age in?crease. Biomasses of different root diameter classes ranked as root stake > thick?root > medium?root > small?root> fine?root. Among them root stake and thick?root accounted for more than 80% of total root biomass. So the thick root were mainly distributed in the 20-80 cm soil layer. The nonlinear compatible model could be established quickly by using R analysis software. It could completely and objectively reflect the distribution relationship of biomasses among various com?ponents( R2>0?77,P>84?7,e<0?153) , solve the incompatibility among the components and improve the accuracy of the models.