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A model for chlorophyll fluorescence and photosynthesis at leaf scale

机译：叶尺度上叶绿素荧光和光合作用的模型

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This paper presents a leaf biochemical model for steady-state chlorophyll fluorescence and photosynthesis of C3 and C4 vegetation. The model is a tool to study the relationship between passively measured steady-state chlorophyll fluorescence and actual photosynthesis, and its evolution during the day. Existing models for chlorophyll fluorescence and photosynthesis are integrated into a relatively simple deterministic model to quantify chlorophyll fluorescence, electron transport, carboxylation and deactivation of antennae in case of light and moisture stress. The model explains the behaviour of the relationship between fluorescence and photosynthesis that has been reported in the literature. Simulations, a sensitivity analysis, and measurements show that variations in total chlorophyll fluorescence correlate well with variations in actual photosynthesis in the late morning and afternoon. Then, photosynthesis is light saturated and limited by stomatal regulation. To calculate the actual photosynthesis rate, an estimate of the maximum carboxylation capacity is needed beside chlorophyll fluorescence. (c) 2008 Elsevier B.V. All rights reserved.
机译：本文提出了一个叶片生化模型，用于稳态叶绿素荧光和C3和C4植被的光合作用。该模型是研究被动测量的稳态叶绿素荧光与实际光合作用及其在白天演变之间关系的工具。现有的叶绿素荧光和光合作用模型被集成到一个相对简单的确定性模型中，以量化在光照和水分胁迫下叶绿素荧光，电子传递，羧化和触角失活。该模型解释了文献中已报道的荧光与光合作用之间关系的行为。模拟，敏感性分析和测量结果表明，叶绿素荧光总量的变化与早晨和下午晚些时候实际光合作用的变化具有很好的相关性。然后，光合作用被光饱和并且受到气孔调节的限制。为了计算实际的光合作用速率，除了叶绿素荧光外，还需要估算最大羧化能力。 （c）2008 Elsevier B.V.保留所有权利。

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