底泥疏浚效果及环境效应研究进展

被引：120

作者：

钟继承

范成新

机构：

[1] 中国科学院南京地理与湖泊研究所

[2] 中国科学院南京地理与湖泊研究所南京中国科学院研究生院

[3] 北京

来源：

湖泊科学 | 2007年 / 01期

关键词：

底泥疏浚; 效果; 环境效应; 污染物; 底柄生物;

D O I：

暂无

中图分类号：

X524 [湖泊、水库];

学科分类号：

摘要：

底泥疏浚的效果至今仍存在很大争议,其中之一是疏浚后所产生的环境效果有可能偏离人们的期望,疏浚能够有效的削减沉积物中营养物、重金属和持久性有机物等污染物含量,但疏浚过程中会引起污染物向水体释放,疏浚后的界面过程有可能对疏浚效果产生较大影响,底泥疏浚对水体富营养化的控制有成功的经验也有失败的教训,不同的湖泊疏浚后对营养盐释放的控制效果不同．底泥疏浚往往对底栖生物产生危害,具体表现为种类、丰富度与生物量的减少,群落结构发生变化,多样性降低；疏浚后微生物胞外酶活性降低,底泥疏浚对沉积物代谢功能存在显著影响,底栖生物和酶活性的恢复需要长期的过程．底泥疏浚对湖泊水污染控制具有时效性,疏浚方式、疏浚深度与疏浚时令是疏浚工程应关注的问题．

引用

页码：1 / 10

页数：10

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