AUTHOR=Wang Ziwen , Yao Lijun , Yu Jing , Chen Pimao , Li Zhen , Yang Weiwei 

TITLE=Evaluation of the ecological carrying capacity of Wailingding marine ranching in Zhuhai, China by high-resolution remote sensing

JOURNAL=Frontiers in Marine Science

VOLUME=Volume 11 - 2024

YEAR=2024

URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2024.1354407

DOI=10.3389/fmars.2024.1354407

ISSN=2296-7745

ABSTRACT=Evaluation of ecological carrying capacity of marine ranching is a prerequisite and guarantee for ensuring the sustainable development of aquaculture activities, protecting and maintaining the stability and security of marine ecosystems. Based on high-resolution satellite remote sensing data and survey data of Wailingding marine ranching in Zhuhai from 2006 to 2021, this study constructed marine ecological carrying capacity (MECC) index system with 3 levels: resources, environment and ecology. A combination of Analytic Hierarchy Process (AHP) method and entropy method was applied to assign values to index, and then, the MECC of marine ranching was evaluated based on state-space model and the Weighted Bonferroni Mean (WBM) model. Results showed that MECC of Wailingding marine ranching increased from 0.49 ( 2006) before the marine ranching construction to 0.79 (2021) after the marine ranching construction. Marine ranching had elevated MECC from a loadable state to a fully loaded state. The intertidal subsystem, with a weight of 52.51%, dominates the MECC of marine ranching, in which resource and environmental factor are the major influencing factors. The increase rate of state-space model (61.73%) was higher than that of the WBM model (44.34%), indicating that state-space model is more feasible for the MECC assessment of Wailingding marine ranching.