Buffer zone length,

l (m)

Constant

Corr. Coef.

y

c

R

0

0.0004

1.6247

0.999

50

0.0007

1.886

0.712

100

0.001

2.0873

0.972

150

0.001

2.1851

0.997

200

0.001

2.4357

0.997