Table 4 NNESS similarity indices between the lists of plants cited by age groups
NNESS(k = 50) | ||||||
|---|---|---|---|---|---|---|
Age | 10–20 years | 20–30 years | 30–40 years | 40–50 years | 50–60 years | + 60 years |
10–20 years | 1.00 | |||||
20–30 years | 0.69 | 1.00 | ||||
30–40 years | 0.64 | 0.69 | 1.00 | |||
40–50 years | 0.57 | 0.65 | 0.64 | 1.00 | ||
50–60 years | 0.53 | 0.56 | 0.60 | 0.59 | 1.00 | |
Above 60 | 0.39 | 0.47 | 0.51 | 0.54 | 0.40 | 1.00 |