塑料时代:中国因作物生产和城市化而造成的河流污染
Yanan Li1,2, Qi Zhang1,2, Jantiene Baartman3
1College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions of MOE, China Agricultural University, Beijing 100193, China.
Environmental science & technology
|August 1, 2023
概括
2015年,超过700千的塑料进入了中国的河流,主要是来自农业薄膜的巨型塑料和管理不善的废物. 这种塑料污染影响着河流生态系统,需要针对绿色发展制定有针对性的控制政策.
科学领域:
- 环境科学 环境科学
- 水的质量 水的质量
- 污染控制 污染控制
背景情况:
- 全球各地的河流面临着大量的巨型塑料和微型塑料污染.
- 河流塑料的来源包括农业,城市化,污水和废物管理不善.
- 了解塑料来源对于有效的环境管理至关重要.
研究的目的:
- 量化中国河流中的塑料污染,区分宏观塑料和微型塑料.
- 确定关键来源和贡献部门,包括农业和城市化.
- 开发一个综合模型来评估河流塑料污染.
主要方法:
- 开发和应用综合的MARINA-Plastics模型 (中国-1.0).
- 包括来自作物生产的塑料来源 (皮膜,温室),污水系统和管理不善的固体废物.
- 在395个中国子盆地对塑料污染的分析.
主要成果:
- 据估计,2015年有716千塑料进入了中国的河流.
- 巨型塑料占塑料总质量的85%.
- 71%的塑料来自中国中东地区人口密集的密集农业地区;农业塑料薄膜贡献了20%,垃圾管理不善占65%,污水占微塑料的大部分.
结论:
- 垃圾管理不善和农业塑料薄膜是中国河流塑料污染的主要原因.
- 针对这些来源的有针对性的政策对于减轻塑料污染至关重要.
- 通过为污染控制战略提供信息,这些发现支持绿色发展倡议.
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