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- Title
Seasonal dynamics of nitrogen-and phosphorus absorption efficiency of wetland plants in Minjiang River estuary.
- Authors
Zhang Wen-long; Zeng Cong-sheng; Zhang Lin-hai; Wang Wei-qi; Lin Yan; Ai Jin-quan
- Abstract
Taking the native Phragmites australis and invasive Spartina alterniflora in Minjiang River estuary as test objectives, this paper studied the seasonal dynamics of their biomass and nitrogen- and phosphorus absorption efficiency. A typical single-peak curve was presented for the seasonal dynamics of aboveground biomass and nitrogen- and phosphorus absorption efficiency of the two species. P. australis had the maximum aboveground biomass (2195.33 g∙m-2) in summer, while S. alterniflora had it (3670.02 g∙m-2) in autumn. The total nitrogen (TN) and total phosphorus (TP) contents of P. australis reached the peak (21.06 g∙m-2 of TN and 1.12 g∙m-2 of TP) in summer and in autumn, respectively, while those of S. alterniflora all reached the peak (26.76 g∙m-2 of TN and 3.23 g∙m-2 of TP) in autumn. Both of the two species had a higher absorption efficiency in TN than in TP (P<0.01), and S. alterniflora had a significantly higher absorption efficiency of TN and TP than P. australis (P<0.05). To some extent, the N/P, C/N, and C/P ratios of plants could indicate the nitrogen- and phosphorus absorption efficiency of the plants.
- Subjects
CHINA; PHRAGMITES australis; SPARTINA alterniflora; WETLAND plants; PLANT biomass; NITROGEN; PHOSPHORUS; RIVER ecology; ESTUARIES
- Publication
Yingyong Shengtai Xuebao, 2009, Vol 20, Issue 6, p1317
- ISSN
1001-9332
- Publication type
Article