Soil sampling was completed in January 2013. At each land-use four
repetitions consisting of 12 subsamples each were collected from the 0
to 10-, 10 to 20- and 20 to 30-cm depth increments around the center
point using a Dutch auger. Sampleswere sieved through a 2-mmscreen
and dried at 50 °C prior to P determinations. Other soil chemical properties
and particle sizes were analyzed and correlated with the P pools.
Additionally, undisturbed soil samples were collected to measure soil
bulk density using a metal cylinder (height 5 cm × internal diameter
5 cm, approx. 100 cm−3). Those values were subsequently used to
calculate the P stocks for each layer.