Tree Root Studies

Studies by Rahardjo et al (2010) indicated that tree radar unit (i.e. ground penetration radar) can be used to provide information on the root distribution of trees. The reliability of TRU is site specific. Several factors that affected the results includes: Soil conditions, dielectric number, and scanning grids. The reliability of TRU data based on the root number detected is 40-75% and based on the root depth detected is 80%. The advantage of tree radar unit method over other methods is in the short time required to do the investigation on site.

Left Camera Layout and Right Ring method, Tree root studies using tree radar unit (TRU) in Changi Village, Rahardjo et al 2010

Drip zone method for TRU scanning, Tree root studies using tree radar unit (TRU) in Changi Village, Rahardjo et al 2010

Air spade process, Tree root studies using tree radar unit (TRU) in Changi Village, Rahardjo et al 2010

Verification process diagram, Tree root studies using tree radar unit (TRU) in IMM, Rahardjo et al 2010

3D Scanning Positions, Tree root studies using tree radar unit (TRU) in IMM, Rahardjo et al 2010

Left: Tree radar unit scanning grid, Rahardjo et al 2010 Right: Leica scan station, Rahardjo et al 2010

Tree radar unit scanning sketch at IMM, Rahardjo et al 2010

TRU result and manual sketch comparison on tree in IMM site. Rahardjo et al 2010

TRU result and manual sketch comparison on tree – Pasir Ris, Rahardjo et al 2010

Root CSA at different depths – Pasir Ris, Rahardjo et al 2010

Khaya Senegalensis tree root density map – Changi Village, Rahardjo et al 2010

References