森林与环境学报2024，Vol.44Issue(5)：530-538,9.DOI:10.13324/j.cnki.jfcf.2024.05.010
气候对天山中部不同海拔天山云杉径向生长的影响
Response of radial growth of Picea schrenkiana var.tianschanica to climate change at different elevations in central Tianshan
摘要
Abstract
This study investigated the effects of climatic factors on radial growth of Picea schrenkiana var.tianschanica at various altitudes in Central Tianshan Mountains.Tree-ring core samples were collected at three altitudinal levels(1 900,2 200,2 500 m)within the practice forest of Xinjiang Agricultural University.Dendrochronological techniques,including temperature,precipitation,the standardized precipitation evapotranspiration index,and the Palmer drought severity index,were employed to analyze meteorological data from 1955 to 2022.The results indicate that at low altitudes,tree-ring width is positively correlated with previous June and current June-August temperatures,previous August precipitation,and the current June-September Palmer drought severity index(P＜0.05).At mid-altitudes,tree ring width was positively correlated with the previous June temperature,August precipitation,and previous June-August standardized precipitation evapotranspiration index(P＜0.05).At high altitudes,tree-ring width was negatively correlated with the current January temperature and previous November to the current March standardized precipitation evapotranspi-ration index(P＜0.05),but positively correlated with the current June-July precipitation(P＜0.05).Therefore,in the forest,P.schrenkiana var.tianschanica growth is closely linked to the environmental moisture conditions,which vary with altitude.Precipi-tation is pivotal for radial growth of P.schrenkiana var.tianschanica at low altitudes,whereas temperature and precipitation jointly affected growth at mid-altitudes,with temperature exerting a greater impact than precipitation on radial growth at higher altitudes.关键词
天山云杉/树木年轮学/年轮宽度/径向生长/气候因子Key words
Picea schrenkiana var.tianschanica/dendrochronology/tree-ring width/radial growth/climatic factors分类
农业科技引用本文复制引用
王强,叶尔江·拜克吐尔汉,徐栋,陈浩..气候对天山中部不同海拔天山云杉径向生长的影响[J].森林与环境学报,2024,44(5):530-538,9.基金项目
中央财政林业改革发展资金"基于大样地的天山云杉林生物多样性空间规律及植被生态过程"(新林规字[2022]9号). （新林规字[2022]9号）
