Physical-Mechanistic Parameterizations of Drought-Stressed Plants Conditions: A Systematic Literature Review.

Physical-mechanistic parameterization of plant transpiration rates can be performed by relating it to stomatal conductance, as done in Ag_s models (A for net CO₂ assimilation and g_s for stomatal conductance to water vapor). A model of this kind was developed by Jacobs (1994), describing the transpiration rate as a response to environmental factors like air humidity, temperature and radiation. The model does not consider the effect of drought stress on plants, and in order to simulate transpiration rates in drought-stressed plants, semi-empirical parameterizations of the variables CO₂ compensation point Γ, mesophyll conductance g_m, maximum CO₂ assimilation rate A_m,max, dark respiration R_d, and leaf angular distribution G need to be adapted. To adapt the Jacobs (1994) model to drought-stressed plants, a systematic literature review has been performed to select physical parameterizations for Γ, g_m, A_m,max, R_d, and G which represent it. A systematic literature review is a literature review directed to a scientific question. It objectives to identify, evaluate, select and summarize all available research with high quality to answer the question. In our case, the question is related to which physical-mechanistic parameterizations for Γ, g_m, A_m,max, R_d, and G can represent a drought-stress plants condition. The physical-mechanistic parameterizations will be inserted in the Jacobs (1994) model and results will be compared to the original model using data of a field experiment performed in very dry conditions in the municipality of Piracicaba, Brazil.