农田的石膏修改,以减少的损失 - - 采集范围尺度上的证据.
Petri Ekholm1, Markku Ollikainen2, Eliisa Punttila3
1Finnish Environment Institute, Syke, Latokartanonkaari 11, 00790 Helsinki, Finland.
Journal of environmental management
|March 30, 2024
概括
用石膏修改农田有效减少了 (P) 和沉积物流入沿海水域. 这项研究表明石膏.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 水质管理水质管理
背景情况:
- 农业排水,特别是 (P),是造成沿海水污染的主要原因之一.
- 对农田的石膏应用是一个建议的经济有效的策略,以减轻P和沉积物损失.
- 了解石膏修改的长期有效性和环境影响对于可持续农业至关重要.
研究的目的:
- 评估石应用在减少沿海水域营养物质和沉积物负载方面的有效性.
- 评估石膏对粒子P (PP),总悬浮固体 (TSS) 和溶解有机C (DOC) 的河流流量影响的持续时间.
- 为了比较P和沉积物损失从石膏修改的领域与未经修改的领域.
主要方法:
- 处理1490公的粘土农田用化石 (4公-1公).
- 使用在线传感器监测接收河水质量,并在修改后5年内采样.
- 将流量数据与上游控制区和修改前数据进行比较.
主要成果:
- 至少5年,立即和持续地减少PP,TSS和DOC的河流流量.
- 在5年监测期间,PP (15%),TSS (25%) 和DOC (8.9%) 流量显著下降.
- 与未经修改的领域相比,修改的领域显示PP (35%),TSS (59%) 和DOC (64%) 的损失明显较低,这表明石膏的有效性.
结论:
- 石膏应用是一种可行的方法,可以减少农田的P和沉积物流失.
- 土壤中石膏的残留存在表明长期利益的潜力,尽管效率可能随着时间的推移而下降.
- 侵蚀性和空间性能的变化凸显了在应用石膏时需要仔细考虑特定地点的条件的需要.
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