Estimation of the Transpiration Rate of Urban Individual Trees by the "3D 3T-Model" and IR Remote Sensing

Geographically dispersed trees (e.g. street trees) are a remarkable characteristic of urban landscape. Though the transpiration of these dispersed trees is important to environmental and water managements, the only available methodology to measuring it is by using sap flow method, which is seriously limited due to the reasons of its destructive and representative. In this study, a methodology is developed based on the "3D 3T-model" and IR remote sensing. Then it is verified by comparing with the results of sap flow method. Results show that the developed method can estimated the transpiration rate of individual trees well. This is the first time that large tree transpiration is successfully estimated by non-contact and non-injured method in the world.