不同遮阴下刺楸幼苗的光响应特性及最适模型  

Light Response Characteristics and Optimal Model of Kalopanax septemlobus Seedlings under Different Shading Treatments

作　　者：袁梦琦 李黎明 檀婷婷 兰雪涵 张一 吴生海 王玉莹 孙光伟 杜凤国[1,3] YUAN Meng-qi;LI Li-ming;TAN Ting-ting;LAN Xue-han;ZHANG Yi;WU Sheng-hai;WANG Yu-ying;SUN Guang-wei;DU Feng-guo(College of Forestry,Beihua University,Jilin Jilin 132013,P.R.China;Comprehensive service center of Shisidaogou Town Changbai County,Baishan Jilin 134402,P.R.China;Key Lab.of State Forestry Administration on Conservation and Efficient Utilization of Precious and Rare Forest Resources in Changbai Mountain,Jilin Jilin 132013,P.R.China)

机构地区：[1]北华大学林学院,吉林吉林132013 [2]长白县十四道沟镇综合服务中心,吉林白山134402 [3]长白山特色森林资源保育与高效利用国家林业局重点实验室,吉林吉林132013

出　　处：《西部林业科学》2022年第2期155-160,168,共7页Journal of West China Forestry Science

基　　金：吉林省科技发展计划项目(20030217-1)。

摘　　要：为探究光响应模型对不同遮阴环境下刺楸幼苗光响应参数的适应性,采用4种模型(直角双曲线模型、直角双曲线修正模型、非直角双曲线模型、指数模型)分别拟合4种遮阴环境下(0%、30%、50%与70%遮阴)的刺楸幼苗的光响应参数,分析不同遮阴环境下刺楸幼苗光响应的变化并利用R^(2)、MAE、MSE结合实测值与拟合值对4种模型拟合效果进行综合评价。结果显示:不同遮阴处理影响刺楸幼苗的光响应参数,遮阴处理后的刺楸幼苗适应弱光能力较强,在弱光环境下的光合能力也较强,而无遮阴处理的刺楸幼苗对强光的利用能力高于遮阴处理后的幼苗;0%和70%遮阴处理下指数模型的拟合效果最佳,30%和50%遮阴处理下非直角双曲线模型拟合最佳。In order to explore the adaptability of different light response models to the light response parameters of Kalopanax septemlobus seedlings under different shading environments,the light response parameters of K.septemlobus seedlings under four shading environments(0%shading,30%shading,50%shading and 70%shading)were fitted by rectangular hyperbolic model,modified rectangular model,non-rectangular hyperbolic model and exponential model.The changes of light response of K.septemlobus under seedlings under different shading environments were analyzed,and the fitting effects of four models were comprehensively evaluated by R^(2),MAE and MSE combined with the measured values and fitting values.The results showed that different shading treatments affected the light response parameters of K.septemlobus under seedlings.The seedlings of K.septemlobus with shading treatment had strong adaptability to weak light and strong photosynthetic ability in weak light environment.The utilization ability of strong light of K.septemlobus seedlings without shading treatment was higher than that of seedlings with shading treatment.The fitting effect of exponential model was the best under 0% and 70% shading treatment,and the fitting effect of non rectangular hyperbolic model was the best under 30% and 50% shading treatment.

关 键 词：刺楸 遮阴 光响应模型 光合参数 

分 类 号：S792.99[农业科学—林木遗传育种]