A MODEL FOR THE RELATIONSHIP BETWEEN LIGHT-INTENSITY AND THE RATE OF PHOTOSYNTHESIS IN PHYTOPLANKTON
A MODEL FOR THE RELATIONSHIP BETWEEN LIGHT-INTENSITY AND THE RATE OF PHOTOSYNTHESIS IN PHYTOPLANKTON
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DOI：
10.1016/0304-3800(88)90057-9
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发表时间：
1988-09-01
影响因子：
3.1
通讯作者：
PEETERS, JCH
中科院分区：
文献类型：
--
作者：
EILERS, PHC;PEETERS, JCH
本文建立了一个浮游植物光合速率与光照强度关系的动力学模型。该模型描述了光合作用过程和那些与光抑制和恢复从光抑制。本文研究了该模型的稳态性质，导出了生产曲线，导出了最大生产率pm、最佳强度Im和特征强度Ik以及h曲线初始斜率的简单表达式。引入了一个新的无量纲参数来衡量光抑制的程度。迭代最小二乘算法为拟合曲线的参数提供了一种简单的方法。建议在对数尺度上以无量纲形式（p/pm vs. I/Im）呈现生产曲线。这在比较不同的光合作用模型时特别有用。将该曲线与Vollenweider和Platt等人的曲线进行比较表明，除了在高光强下，它们的行为都相似。与经验曲线相比，该模型的主要优势是其基于生理机制。这使得有可能以机械的方式导出温度的影响。本文提出了一个程序来整合浮游植物生产的水柱分析。
A dynamic model of the relationship between light intensity and the rate of photosynthesis in phytoplankton has been developed. The model describes the photosynthetic processes and those connected with photoinhibition and recovery from photoinhibition. In this paper, the steady-state properties of the model are studied and a production curve is derived from it. Simple expressions are derived for the maximum production rate pm, the optimal and characteristic intensities Im and Ik, and the initial slope of h curve. A new dimensionless parameter is introduced that measures the degree of photoinhibition. An iterative least-squares algorithm provides an easy method for fitting the parameters of the curve. It is proposed to present production curves in a dimensionless from (p/pm vs. I/Im) on logarithmic scales. This is especially useful in comparing different photosynthetic models. Comparison of the curve with those of Vollenweider and Platt et al. shows that they all behave similarly, except at high light intensities. The main advantage of this model compared to empirical curves is its foundation on physiological mechanisms. This makes it possible to derive effects of temperature in a mechanistic way. A procedure is presented to integrate the phytoplankton production of a water column analytically.