1 To quantify water use and carbon uptake (represented by stem growth) of Pterocarpus indicus, Swietenia macrophylla and Lagerstroemia speciosa, the common street tree species in Bangkok that differ in water-use characteristics as preliminarily shown in a previous study (Tor-ngern and Panha 2016), and determine their whole-tree WUE.
2 To assess and compare drought impacts on WUE of the three species across seasons.
