| 引用本文: | 迟杰,王倩怡,马永民.湖泊水体中HCHs沉降通量及其与浮游植物间响应关系.湖泊科学,2008,20(3):323-326. DOI:10.18307/2008.0309 |
| CHI Jie,WANG Qian-yi,MA Yong-min.Settling fluxes of HCHs and the relations to algal biomass in a eutrophic lake. J. Lake Sci.2008,20(3):323-326. DOI:10.18307/2008.0309 |
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| 摘要: |
| 于2006年跨春夏秋三季对一封闭的小型湖泊水体中颗粒物的沉降通量和浮游植物生物量进行了采样调查,测定了沉降颗粒物中的TOC含量和六六六(HCHs)含量.结果表明,湖水中浮游植物在春末以及秋季密度较大,浮游植物密度、叶绿素含量和总悬浮颗粒物浓度总体变化趋势基本一致,说明水体总悬浮颗粒物浓度与浮游植物生物量密切相关;春季颗粒物沉降通量较大,且与总悬浮颗粒物浓度和叶绿素含量之间存在一定的滞后性,夏季和秋季颗粒物沉降通量保持在一个较低水平;HCHs的沉降通量呈现春季较大的现象,与颗粒TOC沉降通量变化趋势相一致,表明HCHs的沉降主要受颗粒TOC沉降通量的控制. |
| 关键词: 六六六 沉降通量 浮游植物 |
| DOI：10.18307/2008.0309 |
| 分类号: |
| 基金项目:国家自然科学基金项目(20677042)资助 |
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| Settling fluxes of HCHs and the relations to algal biomass in a eutrophic lake |
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CHI Jie1, WANG Qian-yi1, MA Yong-min2
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1.School of Environmental Science and Technology, Tianjin University, Tianjin 300072, P.R.China;2.Tianjin Centres for Disease Control and Prevention, Tianjin 300011, P.R.China
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| Abstract: |
| Particle settling fluxes, phytoplankton biomass and concentrations of HCHs and TOC, sampled from a small
blocked lake, were monitored from spring to autumn in 2006. The results showed that biomass of phytoplankton was high at
the end of spring and autumn. The same change trend was found with phytoplankton biomass, chlorophyll concentrations and
suspended particulate materials, and a closely relationship found between suspended particulate materials and phytoplankton
biomass. Particle settling fluxes were high in spring in which there was a lag period with suspended particulate materials and
chlorophyll concentrations, and kept lower in summer and autumn. HCHs settling fluxes were high in spring which was
consistent with the change trend of organic carbon settling fluxes. This indicated that HCHs settling fluxes were mainly
controlled by organic carbon settling fluxes. |
| Key words: HCHs settling fluxes phytoplankton |
