Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Instantaneous leaf net photosynthetic CO2 assimilation rate (A), stomatal conductance to H2O (gs), intercellular CO2 concentration (Ci) and water use efficiency (WUE; A/transpiration) as a function of volumetric soil water content (SWC). Data have been normalised with their maximum values (Ymax) determined by fitting Eq. (1) to the data. Lines in the two upper panels represent fits to data using Eq. (1). Note that the values on the x-axis are in descending order.
