## 21/12/2013 · non-rectangular hyperbola function ..

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### exponential and non-rectangular hyperbolic function models

In order to correlate net leaf photosynthesis (*P*_{n}, µmol CO_{2} m^{−2} s^{−1}) as a function of photosynthetic flux density (PPFD) the dataset was fitted to a non-rectangular hyperbola (; ) as follows:

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### The model is a non-rectangular hyperbola ..

The non-rectangular hyperbola was more accurate with complicated parameters while the negative exponential function was more practical with simple parameters in the light response curves.

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The results showed that the sequence of fitting effect of the four light response models was in descending order of modified rectangular hyperbola model > exponential model > nonrectangular hyperbola model > rectangular hyperbola model.

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