AusPlots soils survey and sampling processes are comprised of soil characterisation, soil observation, soil bulk density, soil samples and soil metagenoics and described in detail in individual method descriptions.
White, A., Sparrow, B., Leitch, E., Flitton, R., Foulkes, J., Lowe, A., and Caddy-Retalic, S. (2012) AusPlots-Rangelands Survey Protocols Manual, Version 1.2.9, pp. 45 - 58. Terrestrial Ecosystem Research Network (TERN) and University of Adelaide. Available for free download at http://tern.org.au/AusPlots-Rangelands-Survey-Protocols-Manual-pg23944.html
TERN is supported by the Australian Government through the National Collaborative Research Infrastructure Strategy, NCRIS.