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

BMC Ecology

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

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

ISSN: 1472-6785