TABLE 1.

The key environmental factors among different seasons of Lake Fuxian in 2015.

	Spring	Summer	Autumn	Winter
T (°C)	15.1 ± 0.4	21.9 ± 2.8	20.7 ± 2.4	16.3 ± 0.0
pH	8.53 ± 0.02	8.33 ± 0.69	9.30 ± 0.38	8.98 ± 0.74
NTU	5.39 ± 3.21	30.71 ± 1.44	16.75 ± 2.34	23.53 ± 7.07
ORP (mV)	236.20 ± 70.08	50.30 ± 25.52	1.23 ± 11.75	−4.78 ± 16.27
Cond (mS cm–1)	0.27 ± 0.00	0.31 ± 0.01	0.30 ± 0.01	0.27 ± 0.00
DO (mg L–1)	9.77 ± 0.45	7.81 ± 1.22	6.80 ± 2.53	8.39 ± 0.06
DOC (PPM)	4.53 ± 1.75	15.86 ± 8.70	6.91 ± 1.69	6.96 ± 1.72
TN (mg L–1)	0.33 ± 0.11	0.22 ± 0.07	0.34 ± 0.07	0.39 ± 0.04
TP (mg L–1)	0.02 ± 0.00	0.01 ± 0.00	0.01 ± 0.00	0.02 ± 0.00
NO3-N (mg L–1)	0.06 ± 0.06	0.04 ± 0.04	0.10 ± 0.03	0.10 ± 0.06
PO4-P (μg L–1)	1.00 ± 0.58	3.22 ± 0.91	2.11 ± 0.65	3.83 ± 1.43
NH4-N (mg L–1)	0.04 ± 0.01	0.03 ± 0.01	0.06 ± 0.05	0.02 ± 0.01

The values are listed as mean ± sd.