Site | Number of samples collected in the year | N | n | Single | Multiple (%) | ||||
---|---|---|---|---|---|---|---|---|---|
2004 | 2005 | 2006 | 2007 | 2008 | |||||
Yunnan | |||||||||
 LZ | – | – | 67 | 4 | – | 71 | 66 | 58 | 8 (12%) |
 DH | – | – | – | 59 | – | 59 | 49 | 41 | 8 (16%) |
 TC | – | – | 106 | – | – | 106 | 93 | 72 | 21 (23%) |
 BN | – | – | 53 | – | – | 53 | 29 | 26 | 3 (10%) |
Hainan | |||||||||
 DF | 22 | – | – | 36 | 48 | 106 | 93 | 83 | 10 (11%) |
 LeD | 17 | – | – | – | – | 17 | 15 | 15 | 0 (0%) |
 SY | – | 8 | – | 5 | – | 13 | 13 | 11 | 2 (15%) |
Total | 39 | 8 | 226 | 104 | 48 | 425 | 358 | 306 | 52 (15%) |