2024年11月28日，由北京市发展和改革委员会资源节约和环境保护处主持的“北京市重要水体和生态涵养区土壤微塑料的赋存现状评价”项目结题会成功召开。该项目聚焦北京市重要水体及典型生态涵养区农田土壤，通过深入调研与监测，剖析土壤残膜及微塑料的赋存状况，并与国内外同类研究比对，初步明确了北京市重要水体和土壤中的微塑料污染程度。结题会上，亚太中心区域化学品管理室主任陈源就项目成果进行了详细汇报，涵盖重要水体和土壤中微塑料的赋存特征、基于数学模型的溯源分析以及针对性政策建议等关键内容。与会领导与专家对项目给予高度评价，同时建议清华大学进一步优化成果，助力北京市污染防治工作取得更大成效。本项目的顺利结题，为深入了解和治理北京市微塑料污染提供了重要科学依据，也为后续研究与政策制定奠定了坚实基础。

On November 28, 2024, the Division of Resource Conservation and Environmental Protection of the Beijing Municipal Commission of Development and Reform successfully held the project conclusion meeting of the "Evaluation of the Occurrence Status of Microplastics in the Water of Important River Basins and Farmland Soils of Typical Ecologically Sensitive Areas in Beijing". This project focused on water in important river basins and farmland soils of typical ecologically sensitive areas in Beijing. Through in-depth research and monitoring, the occurrence status of microplastics in the water of important river basins and that of residual plastic film and microplastics in farmland soils was analyzed. And by comparing it with the microplastic pollution in similar water bodies and soils at home and abroad, preliminarily clarifying the level of microplastic pollution in the water and soils in Beijing. At the conclusion meeting, Dr. Chen Yuan, Chief of Regional Chemicals Management Branch of the Basel Convention Regional Centre for Asia and the Pacific/Stockholm Convention Regional Centre for Capacity-building and the Transfer of Technology in Asia and the Pacific (hereinafter referred to as "BCRC China"), presented a detailed report on the project's achievements, covering key aspects such as the occurrence characteristics of microplastics in water and soils, source-tracing analysis based on mathematical models, and targeted policy recommendations. The participating leaders and experts highly appraised the project and suggested optimizing the results in the future to contribute more to the prevention and control of pollution in Beijing. The successful conclusion of this project has provided an important scientific basis for in-depth understanding and controlling microplastic pollution in Beijing and has also laid a solid foundation for subsequent research and policy formulation.