光合作用光响应模型的比较

叶子飘, 于强

COMPARISON OF NEW AND SEVERAL CLASSICAL MODELS OF PHOTOSYNTHESIS IN RESPONSE TO IRRADIANCE

YE Zi-Piao, YU Qiang

表1 4个光响应模型拟合冬小麦在20℃和360 μmol·mol-1 CO2时光响应数据所得结果与实测数据的比较

Table 1 Comparison of the measured data of winter wheat (Triticum aestivum) with the results fitted by four models at 20℃ and 360 μmol·mol-1 CO2 concentration

光合参数 Photosynthetic parameters 非直角双曲线模型 Nonrectangular hyperbola model 直角双曲线模型 Rectangular hyperbola model P-M模型 Prado-Moraes model C3植物光响应模型 New photosynthetic model for C3 species 测量值 Measured data 最大净光合速率 Maximum net photosynthetic rate (Pmax, μmol CO 2·m-2·s-1) 51.56 31.27 24.32 22.85 ≈23 初始斜率 Initial slope (α) 0.103 0.084 0.060 0.067 - 光补偿点 Light compensation point (Ic, μmol·m -2·s-1) 11.81 30.60 5.52 28.47 ≈29 光饱和点 Light saturation point (Isat, μmol·m -2·s-1) ≈1 220 ≈750 1 243.08 1 910.56 ≈1 900 暗呼吸速率 Dark respiration rate (Rd, μmol CO 2·m-2·s-1) -1.21 -2.57 -1.243 -1.81 -1.8 决定系数 Determination coefficient (R2) - 0.997 0 0.999 1 0.999 4 -