优化小水体作为减轻污染的自然解决方案
He Duan1,2, Wangzheng Shen1,2, Qingsong Wang1,3
1Key Laboratory for Environment and Disaster Monitoring and Evaluation of Hubei, Jianghan Plain-Honghu Lake Station for Wetland Ecosystem Research, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430077, China.
Environmental science & technology
|September 3, 2025
概括
中国的小型水体 (SWB)
科学领域:
- 环境科学
- 农业科学
- 生态学
背景情况:
- 小水体对于农业景观中的营养循环至关重要.
- 它们的大规模 (N) 清除能力尚不清楚.
- 田是气排放的重要来源.
研究的目的:
- 评估中国大米种植地区SWB的除效率.
- 评估SWB在减轻农业污染方面的潜力.
- 通过SWB确定增强去除的最佳策略.
主要方法:
- 使用了结合生物地化学因素的N去除模型.
- 分析了来自中国大米种植区的175万个小米田 (<0.33公) 的数据.
- 评估了SWB分布和巨覆盖对N去除的影响.
主要成果:
- 每年可能消除169.97千克,占全国作物排放量的23.62%,经济效益为168亿美元.
- 在SWB分布和N排放热点之间存在空间不匹配.
- 针对性地增加关键区域的SWB和增强宏菌覆盖率 (25-50%) 可以显著提高去除效率.
结论:
- 优化SWB分布和增加巨型植物覆盖面是有效的以自然为基础的污染解决方案.
- 战略性地放置SWB可以提供比均增加更高的去除效率.
- 这些策略在土地资源限制下最大限度地提高生态和经济效益.
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