使用自组织地图 (SOM) 方法来研究不同水体类型中的溶解有机物 (DOM)
Han Song1, Liangmin Gao2, Xiaolong Li1
1School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China.
概括
煤沉积水 (TX) 中的溶解有机物 (DOM) 与马水库 (MC) 相比,由于人类活动而导致的DOM,从农业排水中显示出更高的化物质. 外部污染对化指数 (HIX) 有显著影响.
科学领域:
- 环境化学环境化学
- 分析水质 分析水质
- 频谱学是一种光谱学.
背景情况:
- 溶解有机物 (DOM) 在水生生态系统中起着至关重要的作用.
- 了解DOM特征对于评估水质和生态健康至关重要.
- 在水体管理中,区分土著和土著DOM源是关键.
研究的目的:
- 描述和比较煤炭沉降水体 (TX) 和马水库 (MC) 中的溶解有机物 (DOM).
- 确定DOM在这些不同的水生环境中的起源和组成.
- 确定影响水体化指数 (HIX) 的因素.
主要方法:
- 三维光光谱学被用来分析DOM.
- 自组织地图 (SOM) 方法,专注于神经元3,14和17,用于DOM分类.
- 主要成分分析 (PCA) 和多重线性回归 (MLR) 被用于进一步分析.
主要成果:
- 煤沉积水 (TX) 中的DOM表现出比马水库 (MC) 中的含量更高的含量.
- 特克萨斯州的DOM主要来源于农业投入和降雨下水,而MC的DOM与人类活动有关,并显示出更大的本土特征和生物活动.
- 在TX,性物质主导了DOM,而MC的DOM主要是本土的.
- 外部污染解释了99.11%的湿化指数 (HIX) 的变化.
结论:
- 该研究使用先进的光谱和化学测量方法成功地区分了两个水体之间的DOM特征.
- 农业排水和降雨是煤炭沉降地区DOM的重要来源,而人类活动则导致水库中的DOM成分.
- 外部污染是控制水生系统中DOM化的一个关键因素.
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