高原农业2025，Vol.9Issue(6)：701-711,810,12.DOI:10.19707/j.cnki.jpa.2025.06.003
色季拉山不同坡向急尖长苞冷杉生长特性研究
Growth Characteristics of Abies georgei var.smithii on Different Slope Aspects in Sejila Mountain
摘要
Abstract
To investigate the effects of slope orientation and altitude on the growth of Abies georgei var.smithii in the southeast of Xizang,fixed monitoring sites were set up at intervals of 100 meters above sea level on the shady and sunny slopes of Sejila Mount,ranging from 3700 to 4300 meters above sea level.The research results indicate that in the population density of Abies georgei var.smithii,the density on shaded slopes is higher than that on sunny slopes,and it shows a trend of first decreasing,then increasing,and then decreasing with increasing altitude;The age structure of the Abies georgei var.smithii population in Sejila Mount is a stable population;The height and crown width of Abies georgei var.smithii in different slope directions show a decreasing trend with increasing altitude,while the average breast height diameter shows an increasing and then decreasing trend on sunny slopes,and a continuous decreasing trend on shady slopes;The radial growth rate of Abies georgei var.smithii on sunny slopes is significantly higher than that on shady slopes,with the growth rate on sunny slopes being 2.71 times that on shady slopes;During the growth process of Abies georgei var.smithii in Sejila Mount,the population density on the sunny slope is higher than that on the shady slope.Compared with the shady slope,the growth rate of Abies georgei var.smithii on the sunny slope is faster,the proportion of small trees is higher,and the trend of increasing population density on the sunny slope is more obvious.关键词
色季拉山/急尖长苞冷杉/径向生长/径级结构Key words
Sejila Mountain/Abies georgei var.smithii/Radial growth/Diameter class structure分类
生物科学引用本文复制引用
王涵,郭凯瑜,屈兴乐,郑维列..色季拉山不同坡向急尖长苞冷杉生长特性研究[J].高原农业,2025,9(6):701-711,810,12.基金项目
西藏农牧学院研究生创新计划资助项目(YJS2022-13),西藏基于树木年轮学的色季拉山林线高度变化及典型树种对气候的响应 （YJS2022-13）
第二次青藏高原综合科学考察研究资助项目(2019QZKK1006) （2019QZKK1006）
阿里生态监测站2024年度监测项目(603324091)资助. （603324091）
