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太湖溶解有机质光谱和氮磷污染的区域分布差异特征

祝 鹏 华祖林 张润宇 郭建阳 吴丰昌 廖海清

祝 鹏, 华祖林, 张润宇, 郭建阳, 吴丰昌, 廖海清. 太湖溶解有机质光谱和氮磷污染的区域分布差异特征[J]. 环境科学研究, 2010, 23(2): 129-136.
引用本文: 祝 鹏, 华祖林, 张润宇, 郭建阳, 吴丰昌, 廖海清. 太湖溶解有机质光谱和氮磷污染的区域分布差异特征[J]. 环境科学研究, 2010, 23(2): 129-136.
ZHU Peng, HUA Zu-lin, ZHANG Run-yu, ZHANG Run-yu, WU Feng-chang, LIAO Hai-qing. Characteristics of Spatial Distribution Differences of Spectrum of Dissolved Organic Matter and NitrogenPhosphorus Pollution in Taihu Lake[J]. Research of Environmental Sciences, 2010, 23(2): 129-136.
Citation: ZHU Peng, HUA Zu-lin, ZHANG Run-yu, ZHANG Run-yu, WU Feng-chang, LIAO Hai-qing. Characteristics of Spatial Distribution Differences of Spectrum of Dissolved Organic Matter and NitrogenPhosphorus Pollution in Taihu Lake[J]. Research of Environmental Sciences, 2010, 23(2): 129-136.

太湖溶解有机质光谱和氮磷污染的区域分布差异特征

基金项目: 国家重点基础研究发展计划(973)项目(2008CB418200)

Characteristics of Spatial Distribution Differences of Spectrum of Dissolved Organic Matter and NitrogenPhosphorus Pollution in Taihu Lake

  • 摘要: 对太湖水体溶解有机质三维荧光光谱、紫外吸收系数、溶解性有机碳(DOC)、总氮和总磷的分布特征进行了研究,定量估算了溶解有机质的来源. 研究发现:太湖水体溶解有机质的各物理化学参数以及氮磷质量浓度的区域分布特征明显. 水体三维荧光光谱显示有2个特征的类蛋白荧光峰,但不同湖区水样荧光峰位置以及强度并不完全一致. ρ(DOC)和荧光强度〔Fn(355)〕与吸收系数(α)有显著的相关性,但其相关关系也存在明显的区域特征. 根据有机质光谱学和理化指标的分布特点、梯度变化规律及地理特征要素,将太湖分为4个区域(Ⅰ,Ⅱ,Ⅲ和Ⅳ区),讨论了各区域的特征和变化规律. 利用有机质来源与荧光光谱指数的定量关系,估算了溶解有机质的来源贡献率,结果显示,北部湖区城市污水、陆源和生物活动对DOM的来源均有影响,其他湖区DOM以生物作用为主,陆源贡献率均不超过25%.

     

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出版历程
  • 收稿日期:  2009-11-13
  • 刊出日期:  2010-02-25

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