遗留的延迟了预期的管理对象的完成
Ziteng Wang1, Qingjun Guo1, Rongfei Wei1
1Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
长江流域遗留 (P) 超过了储存值,影响了几个世纪以来的水质. 减少溶解的总P和改善污水处理对于恢复至关重要.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 水质管理水质管理
背景情况:
- 流域中遗留的 (P) 对水质构成持续的威胁.
- 在P输入和生态反应之间的时间延迟使水生生态系统管理复杂化.
- 在长江流域 (YRW) 中遗留P的状态及其长期影响仍然不清楚.
研究的目的:
- 分析P积累趋势和影响因素在YRW从1970-2018年.
- 使用分割线模型来确定流域的P储存值.
- 估计遗留P恢复到基线水平所需的时间.
主要方法:
- 分析不同经济发展时期的P积累趋势和影响因素.
- 通过两种分割线模型,量化确定流域P储存门.
- 使用指数衰变模型估计遗留的P恢复时间.
主要成果:
- 由于人为活动,YRW已经超过了其P储存门.
- 剩余P继续对水生生态系统产生重大影响.
- 据估计,完整的遗留P恢复需要大约1000年.
结论:
- 在YRW中的Legacy P破坏了恢复水质的努力.
- 优先考虑溶解的总P管理和加强污水处理是必不可少的.
- 综合战略,包括减少过剩和减少剩余,对于可持续的管理至关重要.
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