Table 1.
Description of morphometric and environmental factors and macroinvertebrates from fiver lakes of Wudalianchi Lake; mean values are indicated for quantitative variables
| Variables | Units | Lotus Lake | Yanshan Mountain Lake | White Dragon Lake | Crane‐chirping Lake | Ruyi Lake |
|---|---|---|---|---|---|---|
| Morphometric variables | ||||||
| Surface area | km2 | 0.43 | 3.37 | 10.58 | 0.48 | 5.88 |
| Perimeter | km | 4.26 | 14.48 | 39.43 | 4.48 | 21.89 |
| Maximum depth | m | 4 | 9.1 | 12 | 5 | 6 |
| Buffer land use | ||||||
| Agricultural land use | % | 47.3 | 48.5 | 51.1 | 54.2 | 52.3 |
| Artificial land use | % | 2.7 | 2.8 | 4.3 | 3.7 | 2.6 |
| Forests | % | 30.8 | 30.5 | 26.3 | 17.9 | 18.3 |
| Water quality | ||||||
| Water temperature | °C | 17.2 | 17.1 | 16.7 | 15.8 | 15.7 |
| Secchi depth | m | 0.63 | 1.42 | 1.09 | 0.88 | 0.91 |
| Dissolved oxygen | mg/l | 9.3 | 9.7 | 10.3 | 7.5 | 8.6 |
| Total phosphorus | mg/l | 0.31 | 0.32 | 0.34 | 0.21 | 0.61 |
| Total nitrogen | mg/l | 1.11 | 0.97 | 1.15 | 1.30 | 1.57 |
| Chlorophyll a | μg/l | 16.7 | 15.5 | 17.8 | 18.4 | 20.5 |
| Macroinvertebrates | ||||||
| Abundance | ind./m2 | 49.99 | 191.55 | 226.79 | 46.86 | 1,122.78 |
| Species richness | 7 | 24 | 27 | 7 | 26 | |