| .过量硼对淡水浮游植物生长及种类变化的影响[J].农业环境科学学报,2013,32(2):. |
| 过量硼对淡水浮游植物生长及种类变化的影响 |
| Effect of Excess Boron on Growth and Composition of Freshwater Phytoplankton |
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| DOI：10.11654/jaes.2013.02.004 |
| 中文关键词: 淡水浮游植物 硼毒害 硼耐受性 优势种 |
| 英文关键词: freshwater phytoplankton boron toxicity boron tolerance dominant species |
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| 摘要点击次数: 2028 |
| 全文下载次数: 1518 |
| 中文摘要: |
| 以自然水体中的浮游植物为对象，通过室内模拟试验，研究了硼浓度为0~400 mg·L-1的水体中浮游植物的生长和种群变化。结果表明：低浓度的硼（≤50 mg·L-1）会提高浮游植物生物量，增大浮游植物多样性；高浓度的硼（≥100 mg·L-1）会降低浮游植物生物量，减小生物多样性；蓝藻门的皮状席藻和微小平裂藻对硼耐受性最强，可以在硼浓度为400 mg·L-1的水体中存活并成为优势种。低浓度硼对某些淡水浮游植物的生长有促进作用，高浓度硼则有抑制作用。随水体中硼浓度升高，耐受性弱的浮游植物种类的优势地位逐渐被高耐受物种取代。 |
| 英文摘要: |
| To investigate the effect of different concentrations of boron（0~400 mg·L-1） on the growth and composition of freshwater phytoplankton, laboratory experiments were conducted in the present study. The results showed that lower concentrations of boron（≤50 mg·L-1） increased the biomass and biodiversity of phytoplankton, whereas the higher concentrations of boron（≥100 mg·L-1） decreased the biomass and biodiversity of phytoplankton. Particularly, Phormidium corium and Merismopedia tenuissima were the most tolerant species and were able to survive at boron concentrations up to 400 mg·L-1. These results suggested that lower concentrations of boron accelerated the growth of specific freshwater phytoplankton species, while higher concentrations of boron inhibited the growth of phytoplankton. Moreover, with the increase of boron concentrations, the dominant species of those with less boron tolerance were replaced progressively by more tolerant species. |
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