Table 4. Spearman rank correlations of length of the last fallow period and the number of cycles with other site characteristics (n = 25).

Variable Spearman rank rs
Landscape context Fallow length Number of Cycles
Percentage of milpa perimeter with mature forest 0.510** -0.622**
Amount of mature forest in 500 m radius 0.391* -0.581**
Spared trees (all spp.)
Density -0.055 ns -0.048 ns
Minimum dbh of spared trees -0.024 ns 0.042 ns
Maximum dbh of spared trees 0.804*** -0.779***
Mean dbh of spared trees 0.772*** -0.693***
Density of vegetation
Percentage of plots with vegetation cover >90% -0.542** 0.420*
Substrate
Rockiness 0.444* -0.409*
*P <0.05, **P <0.01, ***P <0.001, ns = not significant