Skip to main content

Table 3 Polynomials with the best fit (y = total grass DM yield, x = ETTE ha-1)

From: Tree thinning as an option to increase herbaceous yield of an encroached semi-arid savanna in South Africa

Subhabitat Season after thinning Polynomial r2 P
UCA 2 quadratic: y = 948.0 - 0.278 + 0.000021x2 0.78 0.021
UCA 3 quadratic: y = 980.0 - 0.3985 + 0.000039x2 0.90 0.005
CA 2 cubic: 686.3 - 0.4284x + 0.000254x2 + 0.29E-7x3 0.99 0.003
CA 3 quadratic: 630.0 - 0.2132x + 0.000019x2 0.64 0.099
RCA 2 quadratic: 1 968.0 - 0.066x - 0.000073x2 0.95 0.005
RCA 3 quadratic: 1 047.3 - 0.3558x + 0.000038x2 0.98 0.001