Tree density estimations using plotless sampling in four field sites (30 sampling points, 10 replicates).

<p>Tree density estimation is the mean of 10 estimations using each method with 30 random sampling points; half 95 CI is the half width of the 95% confidence interval for the 10 estimates; NN is Nearest Neighbour; BD is Basic Distance; OD is Ordered Distance; PCQM is Point Centred Quarter Method; VAT is Variable Area Transect.