贵州玉屏县古大树资源特征及空间分布格局

Characteristics and Spatial Distribution Pattern of Ancient Tree Resources in Yuping County,Guizhou Province

本文根据2019年玉屏县古树的普查结果资料,分析了古树的资源特征和分布特点。结果表明:玉屏县共有古树622株,分属24科37属46种,其中有7种为珍稀濒危植物,共有12个古树群。该县三级古树最多(540株),其次是二级古树(48株),最少是一级古树(34株);古树胸径集中在40.0~99.9cm,树高集中在18~25m,冠幅集中在4~15m。玉屏县古树主要分布在乡村(95.66%),城市分布少(4.34%),各乡镇间古树数量和物种数有较大差异。玉屏古树总体保护较好,有88.59%为长势健康,长势较差占8.24%,濒危和死亡分别占2.57%和0.64%。

Based on the survey data of ancient trees in Yuping County in 2019,the resource and distribution characteristics of ancient trees were analyzed.The results showed that there were 622 ancient trees in Yuping County,belonging to 24 families,37 genera and 46 species.Among them,7 species were rare and endangered plants,and there were 12 ancient tree groups.In this county,there were 540 ancient trees in the third grade,48 in the second grade and 34 in the first grade.The DBH of ancient trees was 40.0-99.9cm,tree height was 18-25m and crown width was 4-15m.In Yuping County,ancient trees were mainly distributed in rural areas(95.66%)and less in cities(4.34%).There were great differences in the number of ancient trees and the number of species among villages and towns.The overall protection of ancient trees in Yuping was good,88.59%of them were healthy,8.24%have a poor growth,2.57%were endangered and 0.64%were dead.