在Khambhat的超动态海湾中的物种化和生物可用性:陆地输入和水力动力学的影响
T K Vyshnavi1, Umesh Kumar Pradhan1, Balaram Sahu2
1CSIR- National Institute of Oceanography, Regional Centre, Lokhandwala Rd. Andheri (W), Mumbai, 400053, India.
Marine pollution bulletin
|November 28, 2025
概括
坎巴特湾的过度含量可能导致肥胖. 人类输入改变了的物种化,影响了生物利用率和生态系统平衡.
科学领域:
- 环境化学环境化学
- 海洋地球化学 海洋地球化学
- 欧洲化研究研究 欧洲化研究
背景情况:
- 坎巴特湾 (GoKh) 是一个由自然和人为 (P) 负载影响的超动态环境.
- 了解悬浮颗粒物 (SPM) 和沉积物中的P物种化和生物可用性,对于评估生态系统健康至关重要.
研究的目的:
- 评估自然和人为P载荷对GoKh中的P物种化和生物利用性的影响.
- 在SPM和沉积物中识别主导的P分数及其来源.
- 评估由于过度的P输入而导致的安化和生态失衡的风险.
主要方法:
- 从GoKh.季节性收集SPM和沉积物.
- 使用SEDEX (顺序提取) 方法分析P分数,包括可交换的P (Ex-P),与铁结合的P (Fe-P),碳酸酸酸P (CFA-P),detritalP (De-P),有机P (Or-P) 和耐火P (Re-P).
- 在沉积物中分析总颗粒 (TPP) 和总 (TP).
主要成果:
- 总颗粒 (TPP) 增加了季风后,由陆地输入和沉积物再悬浮驱动.
- 在SPM中占主导地位的P分数是detritalP (De-P),CFA-P和耐火P (Re-P),表明矿物质丰富的来源和氧气条件下的人为影响.
- 沉积物P池是稳定的,其中De-P来自石化输入,CFA-P作为反应性水库. 沉积物中的较低的Re-P和Or-P表明了氧化基因生成和工业排放.
- 在潮间沉积物中,长期的P结合是由De-P和CFA-P主导的,受水力动力学和沉积物特性的影响.
结论:
- 在GoKh中过度的P负载带来了显著的轻化风险,由蓝色经济扩张等人类活动加剧.
- 人类产生的压力改变了P的生物可用性,可能抑制了初级生产力,并造成了生态失衡.
- 需要管理策略来减轻P负载并保护GoKh生态系统.
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