2.2-Reasons and limitations of transpiration measurements in mountainous areas

Abstract

Paper presents the up-to-date method of measurement of the transpiration, its application and also limitations in mountainous areas. The relationship of measured transpiration to meteorological characteristics, particularly net radiation and air temperature over the canopy is discussed and for diurnal courses of transpiration recommended. A simple multiregression model for calculation of hourly transpiration is then presented. The use of model for long term seasonal calculation is limited due to the absence of data on soil moisture content and the natural vegetational cycle within the studied catchment.