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Ying Yong Sheng Tai Xue Bao. 2012 Jan;23(1):213-21.

[An approach for integrated assessment of eco-risk in coastal waters based on catastrophe theory: taking Luoyuan Bay as a case].

[Article in Chinese]

Author information

1
Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, Fujian, China. kliangchen@gmail.com

Abstract

Based on catastrophe theory, this paper established an index system and catastrophe progression model for the integrated assessment of eco-risk in coastal waters, including three risk types of "eutrophication-heavy metal pollution-organic pollution" and three dimensions of "water-sediment-organism". According to the related quality standards, a four-level evaluation standard of eco-risk (zero, low, medium, and high) was proposed, and by using the monitoring data of 2007 and 2009, an integrated assessment of the eco-risk in Luoyuan Bay was conducted. In 2007-2009, the spatial variation of the eco-risk in Luoyuan Bay had a downward trend from bayhead to baymouth, and the risk level in 2009 was overall lower than that in 2007. The key factor of the eco-risk in the Bay was eutrophication. The approach established in this paper could identify the spatiotemporal variation characteristics of eco-risk in coastal waters, and better reflect the key eco-risk factor, providing a basic approach for effective forecasting and early warning of eco-risk in coastal waters.

PMID:
22489502
[Indexed for MEDLINE]

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