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引用本文:张兰芳,朱伟,操家顺,梅新敏,张俊.污染水体中悬浮物对菹草(Potamageton crispus)生长的影响.湖泊科学,2006,18(1):73-78. DOI:10.18307/2006.0111
ZHANG Lanfang,ZHU Wei,CAO Jiashun,MEI Xinming,ZHANG Jun.Effect of suspended matter in the polluted water on the growth of Potamageton crispus. J. Lake Sci.2006,18(1):73-78. DOI:10.18307/2006.0111
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污染水体中悬浮物对菹草(Potamageton crispus)生长的影响
张兰芳, 朱伟, 操家顺, 梅新敏, 张俊
河海大学环境科学与工程学院水环境生态研究所, 南京 210098
摘要:
以菹草(Potamageton crispus)为对象,通过对植物鲜重、叶绿素含量、净产氧量、过氧化物酶(POD)和过氧化氢酶 (CAT)活性的观测,研究了悬浮物附着对沉水植物生理生化作用的影响.结果表明,在苏州苗家河重污染水体中,高负荷的悬浮物对菹草的生长产生重大影响.实验25 d,有悬浮物附着的菹草的生物量仅为对照样的63.93%,叶绿素含量及叶绿素a/b值仅为对照样的66.24%和63.88%;植物体内的过氧化物酶活性及过氧化氢酶活性也呈现下降趋势,分别为对照样的61.25%和40.30%.悬浮物是重建沉水植物的重要限制因素之一.
关键词:  污染水体  沉水植物  悬浮物  生理生化特性
DOI:10.18307/2006.0111
分类号:
基金项目:国家“十五”重大科技专项“863”课题“苏州城市水环境质量改善技术研究及综合示范(2003AA601070)”;镇江市水环境质量改善与生态修复技术研究及示范(2003AA601011)联合赞助
Effect of suspended matter in the polluted water on the growth of Potamageton crispus
ZHANG Lanfang, ZHU Wei, CAO Jiashun, MEI Xinming, ZHANG Jun
Institute of Water Environment and Ecology, College of Environmental Science and Engineering, Hohai University, Nanjing 210098, P. R. China
Abstract:
In order to analyze the effect of the attachment of suspended matter on the physiological and biochemical characteristics of macrophyte, several indices were tested: fresh weight (FW), chlorophyll content, net primary production, peroxides(POD) activity and catalaes(CAT) activity. Results showed that high loading suspended matter in Miaojia River in Suzhou had significant effect on the growth of Potamageton crispus. After the experiment was finished, its biomass, chlorophyll content, and ratio of chlorophyll a/b of Potamageton crispus being attached with suspended matter were only 63.93%, 66.24% and 63.88% of the reference one respectively. Activities of POD and CAT of Potamageton crispus decreased, which were 61. 25% and 40. 30% of the reference one. Suspended matter was one of the important factors controlling the reconstruction of submerged macrophyte.
Key words:  Polluted water  submerged macrophyte  suspended matter  physiological and biochemical characteris-ties
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