Table 7.
Average distribution and significance test among three groups invasive weeds using Kruskal–Wallis Test.
| Country/Region | Year | Average Area (km2 ± S.E.) | |||
|---|---|---|---|---|---|
| Group 01 | Group 02 | Group 03 | K–W Test | ||
| Total | Current | 1039 ± 198 C | 2163 ± 1126 BC | 15,322 ± 2928 AB | * |
| 2050 | 4875 ± 880 C | 28,489 ± 6271 B | 11,2538 ± 17,906 A | *** | |
| 2070 | 11,206 ± 2307 C | 53,721 ± 7356 B | 131,753 ± 20,314 A | *** | |
| Southern | Current | 1031 ± 200 C | 1934 ± 901 BC | 13,934 ± 2837 A | * |
| 2050 | 4537 ± 871 C | 22,487 ± 4253 B | 54,106 ± 6340 A | *** | |
| 2070 | 10,058 ± 1961 C | 33,162 ± 3870 B | 55,026 ± 6056 A | *** | |
| Central | Current | 6 ± 5 C | 212 ± 212 BC | 1371 ± 328 AB | * |
| 2050 | 159 ± 78 C | 1940 ± 627 B | 47,115 ± 8862 A | *** | |
| 2070 | 963 ± 325 C | 12,008 ± 1638 B | 52,880 ± 8560 A | *** | |
| Northern | Current | 2 ± 1 | 17 ± 16 | 18 ± 15 | N.S. |
| 2050 | 179 ± 61 C | 4062 ± 2284 BC | 11,317 ± 3492 AB | * | |
| 2070 | 185 ± 59 C | 8551 ± 2894 B | 23,847 ± 6568 AB | *** | |
*, p < 0.05; ***, p < 0.001; N.S., not significant; S.E., standard error; K–W test, Kruskal–Wallis test; the letter A, B, and C used to show difference among the groups.