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Transport and transformation of mercury in main mangrove wetlands of China

Abstract

本论文的主要研究内容有以下几个方面:(1)红树林湿地沉积物中汞的分布特征及形态分布;(2)红树林湿地水体中汞的含量;(3)红树林湿地大气中汞的含量及沉积物-大气界面汞的通量;(4)红树林湿地红树植物中总汞含量,从而探讨中国主要红树林湿地汞的迁移转化。通过本论文的研究取得以下成果: 1.按省区污染状况,我国红树林湿地汞污染程度依次为:福建最重,广西最轻,海南与广东居中。 2.红树林湿地中汞含量的差异是众多环境因素和人类活动相互交叉影响的结果。红树林湿地中,pH值、粒度、有机质、Fe/Hg、Mn/Hg与总汞含量显著相关。其中,粘粒和Fe/Hg是影响沉积物中汞含量最显著的因素。红树林湿地不同的土...In order to study transfer and transform of mercury in main mangrove wetlands of China, samples of plant, sediment, water, air were collected from thirteen mangrove wetlands which cover main mangrove areas of China. This paper focus on the following topics: (1) distribution of total Hg concentration and species in sediments of mangrove wetland; (2) total Hg concentrations in water of mangrove wetl...学位:理学硕士院系专业:生命科学学院生物学系_生态学学号:2005130214

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