Open Access
Appendix 1
The limnological characteristics of the six lakes in the Big East Lake water network, the nutrient data on water quality are from Wuhan water environment bulletin (2001–2007). Note: YDH – Yandonghu lake; YXH – Yanxihu lake; SH – Shahu lake; DH – Donghu lake; YCH – Yangchunhu lake; BH – Beihu lake.
| Lakes | Average water area (km2) | Average depth (m) | COD (mg/L) | TN (mg/L) | TP (mg/L) | Water quality grade | Aquatic macrophytes | Substratum type | Number of sampling sites |
|---|---|---|---|---|---|---|---|---|---|
| YDH | 7.5 | 3.3 | 13.76 | 0.88 | 0.0361 | Class III | Abundant | Silt | 4 |
| YXH | 10.8 | 2.5 | 41.33 | 3.76 | 0.1124 | Worse than class V | Abundant | Silt | 4 |
| SH | 2.8 | 1.5 | 57.8 | 8.28 | 0.2423 | Worse than class V | Scarce | Silt | 2 |
| DH | 33 | 2.2 | 30.06 | 2.23 | 0.3309 | Class IV worse than class V | Scarce | Silt | 13 |
| YCH | 0.2 | 1.5 | 28.04 | 1.53 | 0.1082 | Worse than class V | Scarce | Silt | 1 |
| BH | 1.8 | 2 | 26.28 | 2.8 | 0.1313 | Worse than class V | Scarce | Silt | 2 |
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