思茅松单木根系生物量的估算模型  

Biomass Estimation Models of Individual Root for Pinus kesiya var. langbianensis

作　　者：肖义发[1] 欧光龙[1] 王俊峰[1] 胥辉[1] 农世新 

机构地区：[1]西南地区生物多样性保育国家林业局重点实验室(西南林业大学),昆明650224

出　　处：《东北林业大学学报》2014年第1期57-60,共4页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(31160157)

摘　　要：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0.966 1、0.957 2和0.972 1;以地径为变量拟合效果次之,其相关系数分别达到0.964 1、0.951 2和0.968 8。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.

关 键 词：思茅松 根系生物量 主根 侧根 生物量模型 

分 类 号：S758.5[农业科学—森林经理学]