Abstract
The islands located adjacent to the mainland provide us a lot of natural resources supported by their specific ecosystem structure and function, but they are easy to suffer from anthropogenic pressures and environmental change impacts. The island ecological integrity evaluation is one of the useful tools for the island protection and management. In this study, we proposed the island ecological integrity concept and developed a multi spatial and temporal scale evaluation index system, including anthropogenic pressures, climate change impacts, ecosystem function, and ecosystem structure. We applied the method and used the multi sources data to evaluate the ecological integrity in Nanri island, Dongan island, and Chuanshi island in Fujian Province, China in 2006 respectively. The result showed that the IACEE scores were 0.61, 0.55 and 0.60 in Dongan, Chuanshi and Nanri islands respectively. The IAP, ICC, IEF and IES scores were 0.72, 0.71, 0.43 and 0.54 in Dongan island; 0.71, 0.70, 0.40 and 0.39 in Chuanshi island; 0.67, 0.58, 0.41 and 0.62 in Nanri island respectively. The results indicated that the indexes system could reveal the islands ecological integrity on different spatial scales and spatial locations.
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