The character of chlorophyll-a and its grey relationship with nitrate in the Pearl River estuary in summer

Authors

  • Yinxia Wang South China Sea Institute of Planning and Environmental Research, State Oceanic Administration, Guangzhou 510300, China
  • Jisheng Zeng South China Sea Institute of Planning and Environmental Research, State Oceanic Administration, Guangzhou 510300, China
  • Lei Chen South China Sea Institute of Planning and Environmental Research, State Oceanic Administration, Guangzhou 510300, China
  • Quansheng Lou South China Sea Institute of Planning and Environmental Research, State Oceanic Administration, Guangzhou 510300, China
  • Jian Xie South China Sea Institute of Planning and Environmental Research, State Oceanic Administration, Guangzhou 510300, China
  • Huamei Huang South China Sea Institute of Planning and Environmental Research, State Oceanic Administration, Guangzhou 510300, China
  • Yang Gao South China Sea Institute of Planning and Environmental Research, State Oceanic Administration, Guangzhou 510300, China

Keywords:

grey relation degree

Abstract

Based on the data of chlorophyll-a, nitrate and nitrite derived from the samples collected from the Pearl River estuary during 2004 to 2008, the spatial-temporal character of chlorophyll is analyzed and the correlation between chlorophyll-a, nitrate, and nitrite is studied using Grey System Theory. The distribution of chlorophyll has significant annual variation. There are two high chlorophyll regions, lying around the Wanshan Islands and the Qi'ao Islands, and the high chlorophyll distribution always exists near the Wanshan Islands during all the observed years. There is a good grey correlation between chlorophyll and nitrite, especially around the Qi'ao Islands. From the Lingding Sea to the Shenzhen coast, the grey correlation is not as significant as that in other regions. Except for the Humen and Shenzhen bay stations, all the other stations have a positive degree of grey relation. The sign of the grey relation degree between chlorophyll and nitrate has an obvious spatial difference, with a negative correlation near the coast and a positive correlation in the estuarine region.

References

Cai, Y.M., Ning, X.R., Liu, Z.L., 2002. Studies on primary production and new production of the Zhujiang Estuary, China. Acta Oceanologica Sinica 24(3), 101–111.

Chen, S.Y., Long, A.M., Zhou, W.H., Jian, W.J., Xu, H.Z., Zhang, F.Q., Sun, C.C., Zhang, J.L., 2006. Monitoring and analysis of key water quality parameters in northern South China Sea. Journal of Tropical Oceanography 25(1), 15–18.

Ge, D.B., Wu, X.L., Zhu, W.L., 2005. Chlorophyll-a and its relationship with water quality in Southlake, Yueyang City. Environmental Monitoring in China 21(4), 89–94.

Han, X.Q., Ye, L., Xu, Y.Y., Cai, Q.H., 2006. Analysis of the spatial and temporal changes of chlorophyll-a concentration in XiangXi Bay in spring and its impact factors. Acta Hydro Biologica Sinca 30(1), 89–94.

Huang, L.M., 1992. Annual distribution of chlorophyll a and carotenoids in the Pearl River Estuary. Marine Environmental Science 11(2), 13–18.

Huang, W.J., Qi, Y.Z., Ruan, Z.F., 1997. Analysis of Grey Incidence of Ecology Factor in Dapeng Bay, South China Sea. Ecologic Science 16(1), 34–39.

Juan, C.C., Rosario, J.E., Antonio, P.B., 2000. Numerical analysis of hydrogeochemical data: A case study. Applied Geochemistry 15(7), 1053–1067.

Kang, J.H., Chen, X.Q., Huang, B.Q., 2010. Study on the spatial and temporal variation of surface chlorophyla in Taiwan Strait and its adjacent water. Journal of Oceanography in Taiwan Strait 29(1), 34–41.

Lau, S.S.S., Lane, S.N., 2002. Biological and chemical factors influencing shallow lake eutrophication: a long-term study. Science of the Total Environment 228(3), 167–181.

Liu, Y., Li, S.Y., Wu, R.H., Chen, X.G., 2002. Monitoring and analysis of phytoplankton and the key water quality parameters in the Four Pearl River Openings and the nearby beach waters, PR China. Environmental Monitoring in China 18(2), 26–29.

Long, A.M., Chen, S.Y., Zhou, W.H., Xu, J.R., Sun, C.C., Zhang, F.Q., Zhang, J.L., Xu, H.Z., 2006. Distribution of Macro-nutrients, Dissolved Oxygen, pH and Chl a and their Relationships in Northern South China Sea. Marine Science Bulletin 25(5), 9–16.

Lu, B.W., Wang, R.C., 1996. Distribution characteristics of surface layer chlorophyll-a concentration on different spatial scales in the East China Sea in spring. Oceanologia Et Limnologia Sinica 27(5), 487–491.

Pan, Y.L., 1987. Chlorophyll-a and the primary productivity in ocean. Ocean Science 11, 62–65.

Reynolds, C.S., 1984. The ecology of fresh water phytoplankton. Univ. Press, London, Cambridge.

Ruan, X.H., Shi, X.D., Zhao, Z.H., Ni, L.X. Wu, Y., Jiao, T., 2008. Correlation between chlorophyll-a concentration and environmental factors in shallow lakes in plain river network areas of Suzhou. Journal of Lake Sciences 20(5), 556–562.

Vilehez, C., Vega, J.M., 1994. Nitrite uptake by Chlamydomonas reinhardtii cells immobilized in caleium alginate. Applied Microbiology and Biotechnology 41(1), 137–141.

Wang, H., Gao, H., Zhou, H.Y., Guo, W.D., 2005. Preliminary study on the chlorophyll-a and nutrients in seawater of the mangrove area of Qi'ao Island in Zhujiang River estuary. Journal of Oceanography in Taiwan Strait 24(4), 502–507.

You, L., Cui, L.F., Liu, Z.W., Yang, B., Huang, Z.F., 2007. Correlation analysis of Parameters in Algal Growth. Environmental Science and Technology 30(9), 41–44.

Downloads

Published

2016-07-02

Issue

Vol. 19 No. 3 (2016): Marine environments and dynamic processes in the northern South China Sea

Section

Research article

License

Manuscripts must be original. They must not be published or be under consideration for publication elsewhere, in whole or in part. It is required that the lead author of accepted papers complete and sign the MSU Press AEHM Author Publishing Agreement and provide it to the publisher upon acceptance.