Characteristics of nutrients in the Jiulong River and its impact on Xiamen Water, China

Baohong Chen; Weidong Ji; Jinmin Chen; Cai Lin; Haining Huang; Yunlong Huo; Xianbiao Ji

doi:10.1007/s00343-013-2263-3

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Characteristics of nutrients in the Jiulong River and its impact on Xiamen Water, China

Updated：2023-05-16

- Characteristics of nutrients in the Jiulong River and its impact on Xiamen Water, China
- Journal of Oceanology and Limnology Vol. 31, Issue 5, Pages: 1055-1063(2013)
- Affiliations：
  
  1. Third Institute of Oceanography State Oceanic Administration
  2. College of Information Science and Technology Xiamen University
- Author bio：
- Funds：
- DOI：10.1007/s00343-013-2263-3
  CLC：
- Online First：07 September 2013，
  
  Published：2013
- Accepted：
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Chen, B., Ji, W., Chen, J. et al. Characteristics of nutrients in the Jiulong River and its impact on Xiamen Water, China., Chin. J. Ocean. Limnol. 31, 1055–1063 (2013). https://doi.org/10.1007/s00343-013-2263-3
DOI：

Chen, B., Ji, W., Chen, J. et al. Characteristics of nutrients in the Jiulong River and its impact on Xiamen Water, China., Chin. J. Ocean. Limnol. 31, 1055–1063 (2013). https://doi.org/10.1007/s00343-013-2263-3 DOI：

摘要

Abstract

Water samples were collected at 20 sites on 4 occasions in 2009 (twice in May

and once in both August and November) along the Jiulong River

South China to examine how nutrient inputs from the Jiulong River could affect the nutrient status of the Xiamen Water. Samples were analyzed for nitrite (NO2-N)

nitrate (NO3-N)

ammonium (NH4-N)

phosphate (PO4-P)

silicate (SiO3-Si)

salinity

and temperature

to determine the nutrient and trophic status of the river. The results indicate that nutrients are derived mainly from river runoff. NO3-N was the main form of DIN in most parts of the river. In addition

NO3-N

DIN

and SiO3-Si behave conservatively. There is a surplus of DIN and SiO3-Si in the river

and PO4-P is a limitation on phytoplankton growth. The concentration of DIN is typically above 0.60 mg/dm3

and higher than 1.00 mg/dm3 in most parts of the river. The concentration of PO4-P is typically above 0.02 mg/dm3

while the concentration of SiO3-Si is higher than 1.00 mg/dm3. Between 2003 and 2008

samples were collected 3 times per year (May

August and November) at 27 sites in the Xiamen Water and analyzed for NO2-N

NO3-N

NH4-N

PO4-P

salinity

and temperature. We discovered that the Jiulong River was the key source of DIN into the Xiamen Water

but not PO4-P

indicating the reason of the N/P molar ratio imbalance in the Xiamen Water. In the future

the effects of high DIN concentrations on the phytoplankton communities and marine ecosystems of the Xiamen Water shall be studied.

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Keywords

references

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