森林工程2025，Vol.41Issue(6)：1127-1134,8.DOI:10.7525/j.issn.1006-8023.2025.06.003
红松针叶功能性状与光合特性对坡向的响应
The Responses of Functional Traits and Photosynthetic Characteristics of Pinus koraiensis Needles to Slope Aspects
摘要
Abstract
Used 15-year-old Pinus koraiensis on three slope aspects(sunny slope,semi-sunny slope,and shady slope)in Wangjiagou Management Area,Maoshan Experimental Forest Farm of Northeast Forestry University,as materials to investigate the responses of the functional traits and photosynthetic characteristics of Pinus koraiensis needles to the dif-ferences in environmental factors on different slope aspects.The results showed that the soil moisture content of the shady slope was 5%higher than that of the sunny slope,and the photosynthetically active radiation of the sunny slope was 3 times that of the semi-sunny slope and 10 times that of the shady slope.The specific leaf area of Pinus koraiensis needles on shady slopes was about 1.29 times that of sunny slopes.Pinus koraiensis growing on the shady slope obtained more light energy by expanding the specific leaf area.The stomatal density,water content and NSC content of the conifer-ous leaves on the sunny slope were significantly higher than those on the semi-sunny slope and the shady slope.The pho-tosynthetic capacity of the one-year coniferous leaves was higher than that of the two-year coniferous leaves,and the pho-tosynthetic characteristics on the sunny slope were higher than those on the semi-sunny slope and the shady slope.The environmental conditions on the sunny slope were more conducive to the growth and development of Pinus koraiensis.The main environmental factors affecting the photosynthetic characteristics of Pinus koraiensis needles were land surface temperature and photosynthetically active radiation,and the main environmental factors affecting the functional traits of Pinus koraiensis needles were photosynthetically active radiation.Pinus koraiensis of different slopes adapted to environ-mental changes by adjusting their own needle morphology,photosynthetic characteristics and nutrient distribution to form a unique adaptation strategy.The environmental factors that affect the growth and development of Pinus koraiensis trees are not single,but the result of the coupling of multiple environmental factors.关键词
坡向/红松/环境因子/功能性状/光合特性Key words
Slope aspect/Pinus koraiensis/environmental factors/functional traits/photosynthetic characters分类
农业科技引用本文复制引用
郭会杰,石珈源,刘威,魏如萧,黄磊,沈海龙..红松针叶功能性状与光合特性对坡向的响应[J].森林工程,2025,41(6):1127-1134,8.基金项目
国家自然科学基金项目(31972950) （31972950）
"十四五"规划国家重点研发计划项目课题(2022YFD2201002). （2022YFD2201002）
