Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Result of relationship analysis between response variable (community encroachment rate) and explanatory variables
| Explanatory variables | Variable response (Y) | P-value | ||
|---|---|---|---|---|
| quite severe | severe | really severe | ||
| Number of family members | 0.919 | |||
| 1–3 People | 10 | 21 | 20 | |
| >3 People | 33 | 61 | 55 | |
| Age of the head of the family | <0.001 | |||
| 36–45 years | 20 | 14 | 8 | |
| >45 years | 23 | 68 | 67 | |
| Health of the head of the family | 0.517 | |||
| Not supporting | 7 | 19 | 19 | |
| Supporting | 36 | 63 | 56 | |
| Flood | <0.001 | |||
| Heavy | 30 | 17 | 3 | |
| Really heavy | 13 | 65 | 72 | |
| Landslide | <0.001 | |||
| Wide | 30 | 16 | 5 | |
| Really wide | 13 | 66 | 70 | |
| Whirlwind | <0.001 | |||
| Speedy | 43 | 71 | 28 | |
| Really speedy | 0 | 11 | 47 | |
| Earthquake/liquefaction | <0.001 | |||
| High | 15 | 62 | 58 | |
| Really high | 28 | 20 | 17 | |
Variables of forest damage level (Y) and explanatory/independent (X) variables in CART analysis
| Response variable | ||
| Encroachment rate by community (Y) | 1 | Quite severe |
| 2 | Severe | |
| 3 | Really severe | |
| Explanatory variable | ||
| Number of family (people) (X1) | 1 | 1–3 |
| 2 | >3 | |
| Age of the head of family (years) (X2) | 1 | 36–45 |
| 2 | >45 | |
| Health of the head of family (X3) | 1 | Supporting |
| 2 | Not supporting | |
| Flood (X4) | 1 | Heavy |
| 2 | Really heavy | |
| Landslide (X5) | 1 | Wide |
| 2 | Very wide | |
| Whirlwind (X6) | 1 | Speedy |
| 2 | Very speedy | |
| Earthquake/liquefaction (X7) | 1 | High |
| 2 | Very high | |