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DMicroplasticsata and code for microplastic transport, retention and management scMicroplasticsenarios in China's river network
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This is a dataset and code package, not a research study. It provides data, computer notebooks and models tracking microplastic pollution release, movement, and buildup in China's rivers from 2000 to 2100, including future scenarios for managing this pollution.
This repository provides data and Jupyter notebooks for analysing microplastic releases, river-network transport, retention responses and management scenarios in China over 2000–2100.The package is organised into six folders. The first four contain the inputs, analysis notebooks and outputs associated with the four main manuscript figures: historical spatial patterns of microplastic releases, waterborne fluxes and retention; reach-scale retention responses and warning thresholds; future waterborne fluxes and threshold exceedance under management scenarios; and natural retention improvement with source-specific contributions.The fifth folder contains selected supplementary-analysis notebooks for abundance validation, process-parameter sensitivity, river-size comparisons and threshold robustness. The sixth contains model-workflow notebooks covering source generation, point-source allocation, diffuse-source allocation, river transport and management scenarios, together with the shared annual BAU river-network outputs and river geometry used in the main analyses.Spatial datasets are supplied as Shapefiles, and numerical datasets as CSV or gzip-compressed CSV files.
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Rivers across China carry substantial microplastic loads, and this review finds that abundance is closely tied to population density, with urban rivers showing higher concentrations than rural ones. More than 60% of microplastics detected in most rivers were smaller than 1 mm — the size range most readily ingested by aquatic organisms and most difficult to remove by conventional treatment. The authors identify sewage plants, surface runoff, and atmospheric deposition as the main sources, and flag gaps in current risk assessment frameworks for river microplastics.
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This review synthesizes recent findings on microplastic pollution across China's rivers, lakes, reservoirs, and coastal waters. Researchers found that contamination levels vary dramatically by location, with urban waterways showing the highest concentrations and polypropylene and polyethylene being the most common polymer types. The study identifies rivers as major transport pathways carrying microplastics from inland areas to the sea and evaluates strategies for reducing this pollution.
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