Distribution and Ecologica Risk of Sediment Heavy Metals in the Water-Level-Fluctuation Zone of the Shawan River Section of Yelang Lake

Table 3

Sediment grain-size composition at different sampling sites (corresponding to different inundation times).

Sampling site	Proportion (%)
	Gravel, >1 mm	Sand, 0.22–1 mm	Fine sand, 0.125–0.22 mm	Very fine sand grain, 0.063–0.125 mm	Silt, <0.063 mm
G	33.21	41.26	11.00	10.45	4.09
F	35.06	38.95	13.13	9.64	3.22
E	39.30	39.98	12.20	8.65	4.12
D	35.16	41.72	13.90	5.24	3.97
C	49.70	31.31	10.74	4.62	3.63
B	49.14	34.44	8.22	4.77	3.42
A	45.54	31.56	11.36	8.06	3.46