Chemometry use in the evaluation of the sanya bay water quality

Authors

  • Jun-De Dong Tropical Marine Biological Research Station in Hainan
  • Yan-Ying Zhang Tropical Marine Biological Research Station in Hainan
  • You Shao Wang Tropical Marine Biological Research Station in Hainan
  • Mei-Lin Wu Institute of Oceanology; Tropical Marine Environmental Dynamics South China; Key Laboratory
  • Si Zhang Tropical Marine Biological Research Station in Hainan
  • Chuang-Hua Cai Tropical Marine Biological Research Station in Hainan

DOI:

https://doi.org/10.1590/S1679-87592010000400008

Keywords:

Chemometric method, Sanya Bay, Hainan, China, Water quality, Nutrient, temporal and spatial variations

Abstract

In this study, chemometric method is employed to identify anthropogenic effects on the water quality in Sanya Bay, South China Sea, and its marine and natural characteristics. Principal component analysis has extracted the four latent factors, thus explaining 85.52% of the total variance. Cluster analysis and principal component analysis have identified three different patterns of water quality based on anthropogenic effects and marine characteristics: Cluster I located in the outer and middle parts of the bay, Cluster II close to downtown Sanya, Cluster III located in the Sanya River estuary. In terms of the temporal pattern, principal component analysis and cluster analysis have distinguished the dry season from November to the following April, and the rainy season from May to October. The temporal pattern is related to climate and natural characteristics. The similarity index between variables and scores of samples can further distinguish the contribution of the variables to the samples. Both the polluting sources external to the Sanya River and the water from the South China Sea exercise an important influence on the water quality in Sanya Bay. These results may be valuable for socioeconomic development and human health in the Sanya Bay area.

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Published

2010-12-01

Issue

Section

naodefinida

How to Cite

Chemometry use in the evaluation of the sanya bay water quality. (2010). Brazilian Journal of Oceanography, 58(4), 339-352. https://doi.org/10.1590/S1679-87592010000400008