摘要
以湛江特呈岛红树林区为考察对象,通过底泥TOC向上覆海水释放的模拟对比实验,研究了红树林区底泥中TOC的释放规律和泥水比、温度、pH值三个环境因子对TOC释放的影响,同时对静态和动态体系底泥TOC的释放进行了对比。结果表明,静态下,不同条件释放规律一致,上覆海水TOC的变化呈近似"W"的趋势;泥水比增大会使底泥向上覆海水的TOC释放量增加;温度对底泥TOC释放的影响较为复杂,上覆海水温度较高或较低都有利于底泥TOC的释放;碱性条件有利于沉积物中TOC的释放;海水的运动对沉积物TOC的释放有很好的促进作用。
Contrastive simulation experiment was done to study the release of total organic carbon（TOC） from mangrove sediment at Techeng Island of Zhanjiang,Guangdong Province and influence factors including proportion of mud and water,temperature and pH.The release behaviors in static and dynamic state were also compared.Results showed that the release law was accordant in different conditions and the change of TOC value of overlying seawater was nearly in shape of ＂W＂ in static state.TOC release amount increased with the increase of proportion of mud and water.However,temperature influenced on TOC release complicatedly,high and low temperature of overlying seawater were all in favor of TOC release,and alkalescence condition made for TOC release.Results also showed that the movement of seawater could accelerate the release of TOC from sediment greatly.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第1期34-37,共4页
Environmental Science & Technology
基金
广东省科技计划项目(2007A032600004)
关键词
特呈岛
红树林
底泥
TOC
释放
Techeng Island
mangrove
sediment
total organic carbon（TOC）
release
