Hydrogeophysical Investigations of a Cork Oak Habitat, Portugal

P015 HYDROGEOPHYSICAL INVESTIGATIONS OF A CORK OAK HABITAT PORTUGAL 1 Summary During experiments at a cork oak site in Portugal heterogenous soils including root zones were studied by geoelectric georadar and TDR methods in respect of analyzing the water budget. An empirical relationship between moisture content on one side and resistivity and GPR velocity on the other side are established and used for studying the hydrologic situation in the investigation area. Also resistivity technique was used to image the internal structure of tree trunks. Introduction and objectives The global increase of water use is faced by a limited availability in