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作 者 ：陈文音,袁少雄,李化军,林丰平,李青,胡进民,陈章和*

期 刊 ：生态学报 2010年 30卷 10期 页码：2639~2646

关键词：黑藻；温度；光照强度；生长；净化效果；

Keywords:Hydrilla verticillata, temperature, light intensity, growth, decontamination efficiency,

摘 要 ：研究温度和光照对黑藻（Hydrilla verticillata (Linn. f.) Royle）生长和净化污水效果的影响。结果表明在35 ℃、25 ℃的培养中黑藻生长旺盛，经过15d的培养，植株生物量显著高于5 ℃的处理（P<0.05），对总氮（TN）的去除率达到78%，对总磷（TP）的去除率达到98%；在15 ℃中黑藻生长较慢，对污水的净化效果有所下降，但对TN和TP的去除率仍达到76%和82%；在5 ℃的培养中黑藻的生长受到抑制，对TN和TP的去除率都仅为46%，显著低于15、25 ℃和35 ℃的处理（P<005）。在较高光照强度（2000—4000 lx）的培养中黑藻的生长和对污染物的去除率无显著差异，而在较低光照强度（1000 lx）下，黑藻生长量和对TN和氨态氮（NH4-N）的去除率显著降低（P<0.05）。

Abstract:Effects of temperature and light intensity on plant growth and decontamination efficiency were investigated in micro-scale wetlands vegetated by H. verticillata (Linn. f.) Royle. Results indicated that after a 15d cultivation period, biomass of H. verticillata grown in 25℃ and 35℃ was significantly higher than that in 5℃ (P< 0.05). The average removal rates in 25℃ and 35℃ were 78% for total nitrogen (TN), and 98% for total phosphorus (TP). H. verticillata grew slower in 15℃ than in 25℃ and 35℃, and displayed lower TN and TP removal rates (76% and 82% respectively). Growth of H. verticillata was limited and the removal rates were the lowest in 5℃, with a TN removal rate of 46% and a TP removal rate of 46%, which were significantly lower than the removal rates in higher temperatures examined during this study (P< 0.05). There were no significant differences in biomass and removal rates among 2000 lx, 3000 lx and 4000 lx, while there were significant differences in biomass and removal rates of TN and ammonium between 1000 lx and other light intensities (P< 0.05).

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