西南林业大学学报2025，Vol.45Issue(5)：73-81,9.DOI:10.11929/j.swfu.202404035
海拔对新源野杏树体结构及枝叶功能性状的影响
Effects of Altitude on Tree Structures and Functional Traits of Branches and Leaves in Prunus armeniaca from Xinyuan
摘要
Abstract
Taking the natural population of Prunus armeniaca at different altitudes in Xinghuagou,Tuergen Township,Xinyuan County,Yili Kazak Autonomous Prefecture as the research object,a total of 12 plots were set up along the elevation of 1 100-1700 m,and the distribution of each 3 plots was used as a gradient.The relation-ship between the tree structures,current-year branches and leaf functional traits of P.armeniaca and altitude changes was studied in 4 gradients,and its adaptability to altitude changes was explored.The results indicated that the population density,DBH and crown width of P.armeniaca were the highest at 1 200-1 350 m altitude,and reached the peak of tree heights at 1 100-1200 m altitude.The population density and crown width of P.armeni-aca forests at different altitudes were significantly positively correlated,and the direct effects of altitude on stand density and DBH were the largest and smallest,respectively.With the increase of altitude,the leaf area,leaf length,leaf width and specific leaf area of P.armeniaca decreased gradually,and the leaf thickness increased gradually.The fresh and dry weight of leaves at 1 350-1 550 m altitude was the largest,and the chlorophyll value at 1200-1 350 m altitude was the largest.Each altitude gradient was significantly negatively correlated with leaf length and leaf width,and was significantly positively correlated with leaf thickness.The direct effect of altitude on leaf dry weight was the largest,and the leaf functional traits at different altitudes had different degrees of vari-ation.The current-year branches of P.armeniaca were the longest at 1 100-1200 m altitude,and the branch thick-ness and leaf number were the largest at 1 200-1350 m altitude.There was a significant negative correlation between altitude change and branch length,and a significant negative correlation with leaf number.Altitude had the greatest direct effect on branch length,and the degree of branch variation increased with altitude.The tree structure and branch and leaf functional traits of P.armeniaca's natural population were significantly correlated with altitude changes,and the changes of population's growth functional traits indicated its adaptability to differ-ent altitude environments.关键词
新疆野杏/海拔/树体结构/枝叶/功能性状/相关性Key words
Prunus armeniaca/altitude/tree structure/branch and leaf/functional trait/correlation分类
园艺学与植物营养学引用本文复制引用
凌孝波,郭传超,吴明江,郑凤,王新宇,杨洋,王瑾,刘立强..海拔对新源野杏树体结构及枝叶功能性状的影响[J].西南林业大学学报,2025,45(5):73-81,9.基金项目
新疆维吾尔自治区自然科学基金项目(2023D01A29)资助 （2023D01A29）
第三次新疆综合科学考察项目(2021xjkk0501)资助 （2021xjkk0501）
国家自然科学基金项目(31460190)资助. （31460190）
