FIELD OBSERVATION AND LABORATORY TEST FOR NUTRIENT RELEASE REDUCTION FROM BOTTOM SEDIMENTS WITH SAND CAPPING AT YOKOHAMA PORT
FIELD OBSERVATION AND LABORATORY TEST FOR NUTRIENT RELEASE REDUCTION FROM BOTTOM SEDIMENTS WITH SAND CAPPING AT YOKOHAMA PORT
复制标题
横滨港盖砂减少底部沉积物养分释放的现场观察和室内试验
DOI：
10.2208/prooe.21.737
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Katsuhisa Komatsu
中科院分区：
文献类型：
--
作者：
Y. Nobusawa;K. Murakami;T. Kitamura;T. Koizumi;Y. Kameyama;Katsuhisa Komatsu
本文介绍了横滨港底泥覆沙减少营养盐释放的最新效果。东京湾的水质受到严重污染，因为受污染的沉积物释放了大量的营养物质。为了减少沉积物中营养物质的释放，横滨市政府在横滨港进行了封沙工程。在横滨口岸进行了无污染底泥采样，并进行了底泥营养盐释放速率的实验室测试。结果表明，未封沙沉积物的养分释放速率大于封沙沉积物。因此，认为封沙对减少养分释放的作用在建沙后5~10年仍能维持。
This paper describes the last.ing effect of nutrient release reduction from bottom sediments with sand capping at Yokohama Port. The water quality in Tokyo Bay is st.ill contaminated because of a large amount of nutrient release from contaminated sediments. In order to reduce the nutrient release from the sediments, Yokohama Municipal Government conducted a sand capping const.ruction at Yokohama Port. In the st.udy, we carried out the undist.urbed bottom sediment sampling at Yokohama Port, and carried out the laboratory test.s for nutrient release rate from the sediments. From the st.udy, it is found that the nutrient release rate from the sediments without sand capping is larger than the sediments with sand capping. Therefore it is considered that the effect of sand capping on nutrient release reduction st.ill maintains for 5 to 10 years after the const.ruction.