Fitting Analysis of Light Response Models for Six Species of Callicarpa L.Plants in South Asian Tropical Habitats
In this study,four light models including rectangular hyperbola model,non-rectangular hyperbolic model,modified rectangular hy-perbolic model and exponential model were jointly adopted to evaluate the photosynthetic parameters and light response fitting curves of six Cal-licarpa Linn.species in southern subtropical regions.By comparison of the light saturation point (LSP),light compensation point (LCP),maxi-mum net photosynthetic rate (Pnmax),dark respiration rate (Rd) and apparent quantum efficiency (AQE),as well as the coefficient of determi-nation (R2),root mean square error (RMSE) and mean absolute error (MAE) derived from the four models,the most suitable light response models for these six plants were obtained.The results demonstrated that the modified rectangular hyperbolic model performed the best fitting a-bility for the photosynthetic study of the six Callicarpa species,and the highest light utilization ability under both strong and weak light belonged to C.formosana,and the highest photosynthetic efficiency was found in C.japonica var.Luxurians.In summary,these six Callicarpa species showed both interspecific variability and interspecific similarity in light utilization capacity,and the four light response models differed greatly in the calculation of the photosynthetic potential,however,there was consistency in the model's goodness-of-fit and fitting accuracy.
国家科技期刊平台
NSTL
万方数据
