西南林业大学学报2025，Vol.45Issue(3)：26-34,9.DOI:10.11929/j.swfu.202401048
不同海拔引种地3种芍药科植物的光合特性及速率的影响因子分析
Analysis of the Main Influencing Factors on Photosynthetic Characteristics and Photosynthetic Rate of 3 Species of Peony Introduced in Different Elevation Regions
摘要
Abstract
The study measured the diurnal variation of photosynthetic parameters and environmental factors in the mountain and plain areas of Jinan and analyzed the correlation between Pn and environmental factors.Mul-tiple linear stepwise regression was used to explore the main determinants of Pn.The path analysis was employed to calculate the path coefficient and decision coefficient influencing Pn in 3 species of peony,and to explore the main factors affecting photosynthetic characteristics and photosynthetic rate of 3 peony species at different alti-tudes.The results indicate that in different elevation regions the annual precipitation is similar,while the monthly average temperature in high elevation regions tends to be lower than that in low elevation regions.Additionally,the vapor pressure deficit is generally lower in high elevation regions compared to the low elevation regions.The growth and flowering exhibited superior performance in high elevation regions compared to the low elevation re-gions.In addition to the Tr of P.lactiflora with similar values in high and low elevation regions,the Pn,Gs and Ci of the 3 species of peony exhibited higher values in high elevation regions compared to the low elevation regions.The Pn of the 3 species of peony indicates a significant positive correlation with PAR,a significant negative cor-relation with Ca and either a significant or highly significant negative correlation with ta,VPD and RH.The step-wise regression analysis demonstrates that ta is the most important environmental factor affecting the Pn of P.rockii.The relationship between Pn and ta is linear(R2=0.632),with ta being the primary determinant of Pn and having a decision coefficient of 0.324.Gs is the most important environmental factor affecting the Pn of P.lacti-flora.The relationship between Pn and Gs follows a quadratic function(R2=0.883).Gs serves as the primary de-terminant of Pn,with a decision coefficient of 0.841.Ca is the most important environmental factor affecting the Pn of P.anomala subsp.veitchii.Furthermore,there exists a linear relationship between Pn and Ca(R2=0.995).Ca serves as the primary determinant of Pn,with a decision coefficient of 0.747.To conclude,P.lactiflora has ac-climated to the warm temperate zone in different elevation regions.The Pn of P.rockii is suppressed under high temperature.P.anomala subsp.veitchii is suitable for high elevation regions with lower Ca levels.关键词
芍药科/光合特性/通径分析/环境因子/相关性/海拔Key words
Paeoniaceae/photosynthetic characteristics/path analysis/environmental factor/correlation/el-evation分类
农业科技引用本文复制引用
张谦,陈俊强,陈海燕,张广意,刘海燕,孙音,韩田雨,姜楠南..不同海拔引种地3种芍药科植物的光合特性及速率的影响因子分析[J].西南林业大学学报,2025,45(3):26-34,9.基金项目
山东省重点研发项目(2020LZGC011)资助. （2020LZGC011）
