Table 3 Characterization of a simplified national forested landscape of 100,000 ha in an agricultural area through two functional (diversity and redundancy) and three complex spatial network (connectivity, centrality and modularity) indices at three different spatial scales (stand, ownership, and landscape). This territory includes a public forest of 30,000 ha and 300 privately owned forests separated by agricultural fields, roads and small villages. The “landscape after intervention” column provides an example of the improved tree richness, functional indexes and network attributes following targeted silvicultural intervention (see Table 2 for details). Figs. 3 and 4 depict the management plan provided in Table 2
From: The functional complex network approach to foster forest resilience to global changes
Forest stand | Forest patch | Landscape before intervention | Landscape after intervention | |
|---|---|---|---|---|
Quantity | 5000 | 300 | 1 | 1 |
Mean Area (ha) [min, max] | 40 [10; 120] a | 240 [30; 500] | 100,000 | 100,000 |
Mean Richness (nb of tree species) ± standard deviation [min, max] | 3 ± 2 [1; 10] | 6 ± 3 [3; 12] | 15 | 20 |
Mean Diversityb ± standard deviation [min, max] | 0.21 ± 0.14 [0; 0.39] | 0.32 ± 0.03 [0.22; 0.37] | 0.33 | 0.45 |
Mean Redundancyc ± standard deviation [min, max] | 0.85 ± 0.04 [0.73; 0.99] | 0.86 ± 0.02 [0.80; 0.93] | 0.85 | 0.93 |
Connectivityc | – | – | 0.45 | 0.81 |
Centralityb | – | – | 1.27 | 3.67 |
Modularityc | – | – | 0.53 | 0.39 |
Resilience of landscape | – | – | Low | High |