Table 5 Newly increased snail infested meadows regions in the Poyang Lake area during 1993–2016
| Year | Southern | Northern | ||
|---|---|---|---|---|
| Numbers | Area (ha) | Numbers | Area (ha) | |
| 1998 | 1 | 19.98 | 0 | |
| 2000 | 0 | 1 | 58.13 | |
| 2001 | 5 | 244.55 | 2 | 129.71 |
| 2002 | 15 | 1011.91 | 16 | 3385.83 |
| 2003 | 1 | 68.70 | 0 | |
| 2004 | 0 | 1 | 11.20 | |
| 2008 | 0 | 1 | 0.10 | |
| 2009 | 0 | 1 | 7.67 | |
| 2010 | 1 | 141.00 | 0 | |
| 2013 | 1 | 3.87 | 5 | 99.48 |
| 2014 | 0 | 2 | 5.49 | |
| 2015 | 1 | 27.30 | 0 | |
| 2016 | 1 | 27.30 | 25 | 4751.74 |