中国大气N2O的水产养殖来源:系统类型,管理实践和测量方法的比较
Yifei Zhang1, Guanghui Zhao2, Ping Yang3
1School of Environmental Ecology and Biological Engineering, Institute of Changjiang Water Environment and Ecological Security, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan, 430205, China; Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
Environmental research
|December 22, 2024
概括
中国中国中国中国.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 气候科学 气候科学
背景情况:
- 水产养殖是一个不断增长的全球粮食生产部门.
- 水产养殖产生的温室气体排放,特别是氧化 (N2O),没有得到很好的量化.
- 了解N2O排放对于评估水产养殖对环境的影响至关重要.
研究的目的:
- 为了估计中国水产养殖系统的N2O排放量.
- 确定影响不同水产养殖类型N2O排放的因素.
- 为了比较水产养殖N2O排放强度与其他水生系统.
主要方法:
- 综合了来自139个水产养殖场的数据,这些数据来自59个同行评审的出版物.
- 估计的N2O排放使用各种模型,包括风驱动的扩散模型.
- 分析了基于系统类型,物种,物理尺寸,水文和管理的排放变化.
主要成果:
- 据估计,中国的水产养殖系统每年排放9.68 Gg N−1 (4.12 Tg CO2-eq yr−1) 的N2O.
- 内陆池系统显示N2O流量和排放因子较高.
- 小而浅的池以及单一的农业被确定为N2O排放热点.
结论:
- 水产养殖的N2O排放量很大,但差异很大.
- 内陆池水产养殖需要有针对性的减缓策略.
- 需要进一步的研究和现场测量,以改善N2O排放量库存,特别是共同培养系统.
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