Table 1 Water level requirements of aquatic vegetation during each growth period.
From: Estimating the ecological water levels of shallow lakes: a case study in Tangxun Lake, China
Months | Growth stages | Water level requirements |
|---|---|---|
February-March | Germination | Low water level, higher than the lowest EWL |
April-May | Seedling growth | Gradually increased water level, the rising speed must be less than 0.6 m/month |
June-July | Growth and Diffusion | High water level, the rising speed must be less than 0.7 m/month |
August-September | Maturation | High water level, lower than the warning water level |
October-November | Seed propagation | Gradually decreased water level, the drawdown speed must be less than 3 cm/day |
December-January | Dormancy | Low water level |
