Table 2.

Suburban aquatic plants quantitative data.

Life style	Plant name	Frequency/%	Coverage/%	Important value	Serial number
Submerged plants	Potamogeton crispus	4	4.45	0.95	1
	Ceratophyllum demersum	5	0.21	0.05	2
Floating-leaved plants	Spirogyra	38	1.18	0.68	1
	Lemna minor	19	0.56	0.32	2
Hygrophytes	Polygonum lapathifolium	81	3.62	0.20	1
	Ceratium glomeratum Thuill	29	2.71	0.15	2
	Ranunculus sceleratus	57	2.36	0.13	3
	Alternanthera Philoxeroides (Mart.) Griseb	57	1.95	0.11	4
	Veronica persica	33	1.57	0.09	5
	Lamium amplexicaule L.	33	1.56	0.09	6
	Ranunculus cuneifolius Maxim.	43	0.93	0.05	7
	Herba Ranunculi Japonici	24	0.89	0.05	8
	Cymbidium nanulum	19	0.79	0.04	9
	Be-gonia pedatifida Levl.	14	0.52	0.03	10
	Rorippa indica	14	0.44	0.03	11
	Mazus japonicus	5	0.25	0.01	12
	Poaannua	5	0.13	0.01	13
	Capsella bursa-pastoris (Linn.) Medic.	10	0.07	0.01	14
Emerging plants	Iris tectorum Maxim.	38	3.37	0.41	1
	Arundinella anomala Steud.	38	2.69	0.32	2
	Phragmites australis	19	1.55	0.19	3
	Typha orientalis	5	0.43	0.05	4
	Canna indica	11	0.31	0.04	5