Composition and Biomass of Aquatic Vegetation in the Poyang Lake, China

Table 4

Number of the association area and standing crop (fresh weight) in the total vegetation area and standing crop in the Poyang Lake.

Serial number	Plant community	Quadrat number	Existing quantity (t)
			Fresh weight	Fresh weight range	Dry weight	Dry weight range
1	Imperata cylindrica (Linn.) Beauv	3	38.33	35–45	10.26	9.18–10.8
2	Eleocharis tuberosa (Roxb.) Roem. et Schult.	6	94.08	11.5–380	6.285	4.62–11.34
3	Eleocharis tuberosa (Roxb.) Roem. et Schult.-Polygonum L.	2	137.5	75–200	21.345	20.65–22.04
4	Najas marina	1	35	—	25.53	—
5	Triarrherca sacchariflora	1	40	—	9.32	—
6	Cynodon dactylon (Linn.) Pers.	1	40	—	5.8	—
7	Zizania caduciflora (Turcz. ex Trin.) H.-M.	2	99.76	9.52–190	104.08	6.46–201.7
8	Hydrilla verticillata (L.f.) Royle	2	42.5	35–50	6.195	3.61–8.78
9	Utricularia aurea Lour.	1	50	—	15.28	—
10	Elymus dahuricus Turcz.	3	148.05	14.15–340	23.86333	5.99–55
11	Ceratophyllum demersum L.	4	80	35–150	6.7775	3.07–10.08
12	Vallisneria natans (Lour.) Hara	2	29.75	4.5–55	3.86	3.24–4.48
13	Utricularia vulgaris L.	1	25	—	3.6	—
14	Polygonum L.	6	34.11333	10.34–50	6.218333	4.6–9.71
15	Trapa bispinosa Roxb.	2	57.5	55–60	6.35	2.93–9.77
16	Phragmites communis Trin.	1	120	—	15.43	—
17	Phragmites communis Trin.-; Cynodon dactylon (Linn.) Pers.	1	20	—	9.4	—
18	Triarrhena lutarioriparia	1	27.03	—	11.73	—
19	Limnophila sessiliflora (Vahl) Blume	1	12.8	—	4.29	—
20	Carex spp.	20	72.992	24.84–360	8.7425	4.22–16.96
21	Carex spp.-Eleocharis tuberosa (Roxb.) Roem. et Schult.	1	35	—	8.53	—
22	Nymphoides peltatum (Gmel.) O. Kuntze	5	280	20–280	43.4	3.3–43.4