Evaluation of ecological carrying capacity of Dajinshan Island

Abstract:

According to the survey data from Integrated Investigation and Assessment of Shanghai Coastal Ocean (908 Project for short), as well as the related remote sensing images, statistical yearbook and research data by scholars in recent years, we established the layered index system and analyzed the index weight to the ecological carrying capacity of Dajinshan Island by using Analytic Hierarchy Process. The membership degree value of each index was calculated through Fuzzy Comprehensive Evaluation to quantitatively analyze the correlation between ecological carrying capacity and ecological resilience, carrying capacity of resources, and ecosystem stress. This study shows that the maximum membership degree of the ecological resilience, carrying capacity of resources and ecosystem stress of Dajinshan Island are 0.36, 0.48 and 0.86, respectively, and the ratings are all excellent. And the maximum membership degree of total ecological carrying capacity is 0.49, and the rating is excellent. We conclude that ecological carrying capacity is generally positively correlated with the carrying capacity of resources and ecological resilience, while it is negatively correlated with ecosystem stress.