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三峡水库湖北段沉积物磷形态及其分布特征
Authors
张琳
梅裕
毕永红
胡征宇
Publication date
1 January 2011
Publisher
Abstract
应用淡水沉积物的标准测试程序(SMT)测定了三峡水库湖北段长江干流和4条支流中14个采样点沉积物的总磷、无机磷、有机磷、铁/铝磷和钙磷的含量并对不同形态磷之间进行了相关性分析。结果表明,三峡水库湖北段水体表层沉积物中TP和各种磷的赋存形态存在明显的空间差异,TP含量为361.6~1 033.5 mg/kg;In-P是沉积物中磷的主要成分,占TP的58.1%~92.3%;沉积物中TP的增减主要来自In-P,In-P的增减主要来自Ca-P,Ca-P占In-P含量的53.7%~83.7%。而Org-P、Ca-P、Fe/Al-P三者的含量相对独立。长江湖北段一级支流在表层沉积物的TP空间分布特征总体表现为:香溪河>童庄河>袁水河>青干河。与其他支流相比,香溪河沉积物的总磷和各形态磷含量都显著高于其他支流。上述研究结果在一定程度上获得了不同形态磷在三峡水库湖北段的分布特征,为客观评价沉积物潜在的磷释放能力提供依据
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:342005/16211
Last time updated on 15/03/2018