高原农业2025，Vol.9Issue(3)：311-321,11.DOI:10.19707/j.cnki.jpa.2025.03.004
林芝市散生古树资源与空间分布格局
Resource and Spatial Distribution Pattern of Scattered Ancient Trees in Linzhi City
摘要
Abstract
Scattered ancient trees have witnessed the changes in human history and are important empirical data for studying local paleoclimate,plant distribution,and ecological changes.This study combined traditional statistical methods with GIS spatial analysis.Nearest neighbor analysis was used to determine the spatial distribution pattern,while kernel density estimation identified high-value areas of ancient tree distribution.The correlation between tree growth indicators and environmental factors was also analyzed.The results were as follows:(1)There were 549 scattered ancient trees in Linzhi City,belonging to 18 families,26 genera,and 34 species,and four species of walnut,poplar of Xizang,juniper and walnut were the dominant species.(2)The highest number of ancient trees were those with a height of 10～20 m,a diameter at breast height(DBH)of 3～7 m,and a crown width of 10～19 m.(3)In terms of spatial distribution patterns,the ancient trees in Linzhi exhibited a clustering distribution,with the area around Bujiu Township identified as a high-density zone(480 km2～510 km²),and moderate-density zones identified in Jiangda Township of Gongbujiangda County,Zhongda Township of Lang County,and Songzong Town of Bomi County.(4)The analysis of different factors revealed a highly significant correlation between the east-west and north-south crown widths,a positive correlation between tree height and both DBH and crown width,and a negative correlation between population density and both elevation and slope.关键词
林芝市/散生古树/资源组成/空间分布格局Key words
Linzhi City/Scattered ancient trees/Resource composition/Spatial distribution pattern分类
农业科技引用本文复制引用
骆师堂,万丹,李超,周金龙,高鑫,杨来仙,陈嵚崟,潘刚..林芝市散生古树资源与空间分布格局[J].高原农业,2025,9(3):311-321,11.基金项目
西南高山峡谷区水土流失综合防治技术与示范项目(2022YFF1302904)资助. （2022YFF1302904）
