A peaked function for modeling temperature dependence of plant productivity |
| |
Institution: | 1. Institute of Desert Meteorology (IDM), China Meteorological Administration (CMA), Urumqi 830002, China;2. Xinjiang Normal University, Urumqi 830054, China;3. College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 734000, China |
| |
Abstract: | We suggests that temperature response of plant productivity can be modeled by the Arrhenius function modified to describe the effect of temperature on enzyme activity: GA(T) = 2f(T)/(1 + f2(T)), where f(T) = exp(Ea/RTopt ? Ea/RT), R the universal gas constant, Ea the activation energy and Topt is the optimal temperature. In common with other functions used for modeling the temperature response of plant productivity, the curve of function G is almost symmetrical and bell-shaped. The special convenience of GA is that it relates the width of the “bell” to thermodynamic concepts, such as activation energy of chemical reactions converting carbon dioxide and water to carbohydrates. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|