大气污染控制有利于沿海环境
Ouping Deng1,2, Shuai Huang1, Chen Wang2
1College of Resources, Sichuan Agricultural University, Chengdu 611130, China.
Environmental science & technology
|December 22, 2023
概括
中国每年将800万的转移到海洋中,主要来自农业和污水. 减少空气污染,特别是氨和氧化排放,是减轻海洋污染的关键.
科学领域:
- 环境科学 环境科学
- 海洋学 海洋学 海洋学
- 生物地质化学生物地质化学
背景情况:
- 是海洋生态系统中关键的限制营养素.
- 自工业前时代以来,陆地气输入海洋的量大幅增加.
- 中国是全球循环的主要贡献者,但陆海运输的途径和来源尚未得到充分了解.
研究的目的:
- 为了量化从中国到海洋的转移.
- 确定气运输的主要来源和途径.
- 评估潜在的减缓战略,以减少海洋污染.
主要方法:
- 综合建模方法结合了CHANS,WRF-Chem和WNF模型.
- 2017年将转移到海洋的估计.
- 对大气沉积对海上叶绿素度的影响分析.
- 确定主要贡献的行业和地区.
主要成果:
- 据估计,2017年从中国向海洋转移了800万 (Tg) 的.
- 大气沉积占总气输入的三分之一,解释了近海叶绿素度变化的约一半.
- 博海海域的气输入量最高 (214公斤N ha-1),远远超过其他地区.
- 农业系统 (55%) 和家庭污水 (21%) 是出口的最大贡献者.
结论:
- 缓解措施可以将气出口到海洋的数量减少43%.
- 通过减少氨和氧化排放来解决空气污染问题对于海洋保护至关重要,为潜在的减少贡献33%.
- 优先考虑农业和运输部门的缩,为海洋环境带来最具成本效益的好处.
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