Marine ecological security assessment from the perspective of emergy ecological footprint

Introduction Marine ecological security assessments are considered as a basis for coordinating marine economic development and protection. Methods We propose an assessment method based on the emergy footprint which first measures of natural elements ecosystem. Considering role economic, social waste discharge factors in ecosystem, evaluation index is constructed, dynamic conducted long time series data to characterize change trend security. Results The Guangxi ecosystem was selected case study, by collecting from 2008 2020. results show that Guangxi's has always been ecologically secure state, but since 2010, intensity increasing, indicating deterioration. Therefore, some targeted suggestions put forward. Discussion This provides new tool offers guidance sustainable utilization ecosystems.