Table 4. Fragmentation indices for total forest cover combining all forest classes, and individual forest classes at each land-cover date. Euclidean nearest neighbor distance (ENN) was used to measure isolation, patch cohesion (PC) was used as an indicator for physical connectivity among like patches, and percentage of like adjacencies (PLA) was used as a measure of aggregation among similar patches.
| |
| |
|
|
Isolation: ENN (m) |
|
Connectivity: PC (%) |
|
Aggregation: PLA (%) |
|
Category |
1986 |
1996 |
2001 |
|
1986 |
1996 |
2001 |
|
1986 |
1996 |
2001 |
| |
|
Forest cover |
110.8 |
120.5 |
115.8 |
|
99.86 |
99.91 |
99.92 |
|
95.62 |
96.37 |
96.61 |
|
Natural forest |
130.6 |
135.4 |
142.7 |
|
99.76 |
99.68 |
99.68 |
|
94.83 |
94.02 |
93.91 |
|
Reforestation |
337.0 |
202.3 |
187.9 |
|
86.59 |
97.06 |
97.91 |
|
71.34 |
81.81 |
81.36 |
|
Charral |
164.3 |
191.1 |
250.9 |
|
93.28 |
93.33 |
93.82 |
|
74.14 |
75.20 |
77.28 |
|
Secondary forest |
526.4 |
215.7 |
227.9 |
|
83.46 |
89.09 |
92.68 |
|
67.39 |
70.48 |
74.05 |
|
Riparian forest |
238.5 |
216.9 |
188.1 |
|
87.57 |
89.20 |
92.19 |
|
67.66 |
71.78 |
74.57 |
|
| |
|