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Study of marine debris around a tourist city in East China: Implication for waste management
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Marine debris was surveyed in a coastal tourist city in eastern China, revealing patterns driven by tourism, fishing, and poor waste management. The study argues that effective debris management requires understanding local sources, which differ significantly between developed and developing regions.
Marine debris characterization is fundamental for developing policies aiming at ending the flow of marine debris at the source. China has the largest coastal population in the world. For this emerging economy, the sources of debris might be different from those in regions at different developmental stages. As a typical coastal tourist city and a special economic zone in East China, there are multiple sources of marine debris continuously produced around Xiamen. Marine debris characterization here could provide insights into regulatory measures. Therefore, the abundance and composition of marine debris around Xiamen were investigated. Average densities of floating, beached, benthic macro-debris and floating microplastics (0.5 mm - 5 mm) were 3963 ± 2027 items km, 0.13 ± 0.08 items m, 20,274 ± 15,873 items km and 36,455 ± 33,935 items km, respectively. Based on the Clean Coast Indexes, the beaches investigated were supposed to be "very clean" most of the time (73.2% ± 34.9%). Wastes with low value for recycling/reuse, such as grocery bags, ropes, and foams, were the main items of marine debris in the study area. Both domestic sources from the upstream and local fishing/aquaculture activities significantly contributed to marine debris. Obvious regional differences in benthic debris categories could be explained by both natural factors and the rural-urban gap in economic levels, waste-management strategies and infrastructure. These might be common features in this emerging market and densely populated economy. The findings provide insights into the sources of mismanaged waste around this tourist city and some neglected deficiencies in China's current solid waste management system.
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