藏东横断山区昌都市古树名木资源特征及分布研究

Characteristics and Distribution of Ancient and Famous Tree in Chamdo,Hengduan Mountains Area,Eastern Tibet

对西藏昌都地区古树名木资源现状及生长特征进行相关研究,为完善西藏古树名木资料及以后的研究提供基础。本研究通过对昌都地区古树名木资源的现状进行实地调查,并对古树的树龄、树高、冠幅及胸围进行回归模型分析。研究区内分布有古树8科16属,共414株,优势树种为藏川杨。一元二次回归显示古树名木的四个生长特征之间表现为同步增长的趋势,且多元线性回归模拟关系密切,为以后推算古树名木资源的树龄提供一种切实可行的方法。昌都地区的古树较多,但分布相对集中,回归分析结果对以后的研究具有一定的参考价值。

The related research on the status quo and growth characteristics of ancient and famous tree resources in the Chamdo area of Tibet was carried out,which provided a basis for the improvement of ancient and famous Tibetan trees and future research.This paper conducted a field survey of the status of ancient and famous trees resources in Chamdo,and analyzed the tree age,tree height,crown width and chest circumference of the old trees by regression model.The distribution of the study area had eight families,16 genera of old trees,and a total of 414 trees,which the dominant species was Populus szechuanica var.tibetica.The quadratic regression indicated that the four growth characteristics of ancient and famous trees showed a trend of simultaneous growth,and the multiple linear regression simulations were closely related,which provided a practical method for estimating the age of ancient and famous trees.There are many ancient trees in the Chamdo area,but the distribution is relatively concentrated.The regression analysis results have certain reference value for future research.