4种经验模型在藏川杨光响应研究中的适用性  

Applicability of Four Empirical Models on Photosynthesis Light Response of Populus szechuanica Schneid

作　　者：王圣杰[1] 黄大庄[1] 闫海霞[1] 徐学华[1] 马向超[1] 

机构地区：[1]河北农业大学林学院

出　　处：《北华大学学报（自然科学版）》2011年第2期208-212,共5页Journal of Beihua University（Natural Science）

摘　　要：采用直角双曲线模型、非直角双曲线模型、直角双曲线修正模型和指数函数模型分别对藏川杨（Populus szechuanica Schneid）叶片光响应曲线进行了拟合与比较,探讨了几种模型在藏川杨光响应研究中的适用性.结果表明：不同模型对同一种植物光响应曲线的拟合结果存在差异,采用非直角双曲线模型和直角双曲线模型拟合出的光补偿点（LCP）、最大净光合速率（Pmax）高于实测值,光饱和点（LSP）远低于实测值;函数模型拟合的最大净光合速率较为接近实测值;采用直角双曲线修正模型拟合的藏川杨叶片光响应参数均比较准确.The photosynthesis light response curve of leaf of Populus szechuanica was fitted and compared by using nonrectangular hyperbolic model,rectangular hyperbolic model,modified rectangular hyperbolic model and index function model,and the applicability of four empirical models on photosynthesis light response of Populus szechuanica Schneid was discussed.The results showed that the fitted results by using the different models for the same species were different.The parameters LCP and Pmax were higher than measured data which simulated by nonrectangular hyperbolic model and rectangular hyperbolic model and the LSP was lower than measured data;Pmax which was simulated by index function model was near to measured data,the parameters of light-response curve simulated by modified rectangular hyperbolic model were more accurate than those of other models.

关 键 词：藏川杨 经验模型 光响应 适用性 

分 类 号：S718.43[农业科学—林学]