CAJ | 학술논문

通过对思茅松31株样木的测定，分析了思茅松天然林单木根系生物量的变化规律；运用幂函数对模型进行拟合，分别构建了单木主根生物量、侧根生物量和根系总生物量的估算模型。结果表明：（1）基于胸径、地径的单变量模型，以及基于胸径与树高、地径与树高的二变量模型，相关系数均高于0．93；主根生物量模型和根系总生物量模型相关系数均高于0．95。（2）主根、侧根、根系总生物量都以地径和树高为变量拟合效果最佳，其相关系数分别达到0．9661、0．9572和0．9721；以地径为变量拟合效果次之，其相关系数分别达到0．9641、0．9512和0．9688。
통과대사모송31주양목적측정，분석료사모송천연림단목근계생물량적변화규률；운용멱함수대모형진행의합，분별구건료단목주근생물량、측근생물량화근계총생물량적고산모형。결과표명：（1）기우흉경、지경적단변량모형，이급기우흉경여수고、지경여수고적이변량모형，상관계수균고우0．93；주근생물량모형화근계총생물량모형상관계수균고우0．95。（2）주근、측근、근계총생물량도이지경화수고위변량의합효과최가，기상관계수분별체도0．9661、0．9572화0．9721；이지경위변량의합효과차지，기상관계수분별체도0．9641、0．9512화0．9688。
We investigated the root biomass models of 31 sample trees of Pinus kesiya var.langbianensis in Simao District of Yunnan Province by power function, and built the individual biomass models of main root, lateral root and the total root of the Simao pine natural forest.The correlation coefficients (R2) of the models were higher than 0.93, and those of main root and total root biomass were higher than 0.95.Main root, lateral root and total root biomass fitting models with basal diameter and tree height as variables are the best with R2 of 0.966 1, 0.957 2 and 0.972 1, respectively.Then the models with the diameter were secondary with R2 of 0.964 1, 0.951 2 and 0.968 8, respectively.