Diagnostic model construction and example analysis of habitat degradation in enclosed bay: I. diagnostic model construction |
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| Authors: | Ge Yu Peng Sun Guangxing Liu Donghui Xu Guangmao Ding Dongren Huang |
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| Institution: | 1. Key Laboratory of Marine Environmental Science and Ecology, College of Environmental Sciences and Engineering, Ocean University of China, Qingdao, 266100, China
2. Fujian Provincial Ocean and Fisheries Monitoring Center, Fuzhou, 350003, China
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| Abstract: | Presently, research is lacking regarding the diagnosis and evaluation of habitat degradation in enclosed bay systems. We established a diagnostic model for enclosed bay habitat degradation (EBHD model) using a multi-approach integrated diagnostic method in consideration of driving force-pressure-state-influence-response. The model optimizes the indicator standardization with annual average change rate of habitat degradation as the basic element, to reflect accurately the impact of the change and speed of degradation on the diagnostic results, to quantify reasonably the contribution of individual diagnostic indicator to habitat degradation, and to solve the issue regarding the influence of subjective factors on the evaluation results during indicator scoring. We then applied the EBHD model for the Sansha Bay in Fujian Province, China, evaluated comprehensively the situation of habitat degradation in the bay, and screened out the major controlling factors in the study area. Results show that the diagnostic results are consistent in overall with the real situation of the study area. Therefore, the EBHD model is advantageous in terms of objectivity and accuracy, making a breakthrough in diagnosis and evaluation for habitat degradation in enclosed bay systems. |
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| Keywords: | enclosed bay habitat degradation diagnostic model Sansha Bay |
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