防城季节性雨林优势种罗浮柿测树因子曲线回归与通径分析
Curve Regression and Path Analysis of Tree Measurement Fac-tors of Dominant Species Diospyros morrisiana in Fangcheng Seasonal Rainforest
李武峥 1邓慧莲 2杨婷 1廖南燕 1左静 1张恒 2李浩楠 2梁士楚2
作者信息
- 1. 广西壮族自治区防城金花茶国家级自然保护区管理中心,广西防城港 538021
- 2. 广西师范大学生命科学学院,广西桂林 541006
- 折叠
摘要
为探究防城季节性雨林优势种罗浮柿(Diospyros morrisiana)的形态特征及其相关生长规律,本研究基于防城那山子季节性雨林1 hm2群落样地实测数据,对其测树因子进行曲线回归和通径分析.结果表明:罗浮柿株高(H)、胸径(D)和冠幅(W)之间存在极显著的相关关系;胸径-株高、胸径-冠幅、株高-冠幅的最优回归方程均为幂曲线模型,表达式分别为 H=3.0248×D0.4501(R2=0.634)、W=0.6600 × D05462(R2=0.613)和W=0.3147×H0.9108(R2=0.545);胸径和株高对冠幅具有极显著正向作用,胸径对株高的影响大于其对冠幅的影响,其对冠幅的影响大于株高对冠幅的影响.因此,罗浮柿的株高和冠幅可通过测定其胸径来估算.
Abstract
In order to explore the morphological characteristics and related growth rules of the dominant spe-cies Diospyros morrisiana in the seasonal rainforest of Fangcheng,this study was based on the measured data of 1 hm2 community sampling plots in the seasonal rainforest of Nashanzi,Fangcheng,and the tree measure-ment factors were analyzed by curve regression and path analysis.The results showed that there was a ex-tremely significant correlation between plant height(H),diameter at breast height(D)and crown width(W)of D.morrisiana.The optimal regression equations of D and H,D and W,and H and W were all power curve models,and the expressions were H=3.0248 × D0.4501(R2=0.634)、W=0.6600 × D0.5462(R2=0.613)and W=0.3147 × H0.9108(R2=0.545)respectively.The effect of D on plant height was greater than that of D on crown width,and the effect of D on crown width was greater than that of plant height on crown width.Therefore,the plant height and crown width of D.morrisiana can be estimated by measuring its diameter at breast height.
关键词
罗浮柿/测树因子/曲线回归/通径分析/季节性雨林Key words
Diospyros morrisiana/tree measurement factor/curve regression/path analysis/seasonal rainfor-est引用本文复制引用
基金项目
国家自然科学基金项目(32260283)
中央财政林业改革发展资金项目(GXZ2022-C3-002212-YZLZ)
2023年度广西大学生创新创业训练计划项目(S202310602177)
出版年
2024
国家科技期刊平台
NSTL
万方数据