| 赵北北,刘永,李纯厚,徐姗楠,齐占会,肖雅元.氮营养对两种红树植物根际去除柴油污染的影响[J].农业环境科学学报,2015,34(10):1865-1872. |
| 氮营养对两种红树植物根际去除柴油污染的影响 |
| Effects of Nitrogen Nutrition on Diesel Fuel Removal by Rhizosphere of Two Mangrove Seedlings |
| 投稿时间：2015-04-17 |
| DOI：10.11654/jaes.2015.10.005 |
| 中文关键词: 秋茄 桐花树 根际 柴油去除 氮营养 |
| 英文关键词: Kandelia candle Aegiceras corniculatum rhizosphere diesel fuel removal nitrogen nutrition |
| 基金项目:广东省海洋渔业科技推广专项科技攻关与研发项目(A201101I04,A201201I05);国家自然科学基金青年科学基金项目(41006073);广东省低碳发展专项资金项目(2012-007) |
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| 中文摘要: |
| 采用温室沙培试验4个月,研究了在不同氮营养水平下红树植物秋茄(Kandelia candle)和桐花树(Aegiceras corniculatum)对柴油污染的修复作用,并探讨了氮营养对秋茄和桐花树在柴油污染暴露情况下的生长影响,以及对柴油污染去除效果的影响.结果表明,柴油污染对红树植物秋茄和桐花树的生长具抑制作用,柴油浓度越高抑制越明显,且对根部的抑制作用比对地上部显著,增加氮营养水平可以促进红树植物对高浓度柴油污染的耐受性.在各种污染水平下,柴油中总石油烃在秋茄和桐花树的非根际区去除率为72%~80%,在根际区则高达90%以上.相同污染水平下,增加氮营养水平可有效促进秋茄和桐花树根际对柴油的生物去除效率. |
| 英文摘要: |
| Oil spill pollution has drawn more and more attention in recent years because the pollutant could enter into the coastal ecosystems and pose a potential risk to human health via food chain. Constructed mangrove wetland has been suggested as a high efficiency in situ method to remedy some pollutants, such as sewage, heavy metal, PAHs, etc. However, environmental factors may affect pollutant removal efficiency of constructed mangrove wetland. A sand-culture experiment was carried out for four months to investigate the effect of nitrogen nutrition on diesel fuel removal and growth of two mangrove seedlings, Kandelia candle and Aegiceras corniculatum. Results showed that the growth of both K. candle and A. corniculatum was significantly inhibited by diesel fuel, with more inhibition at higher concentrations. However, increasing nitrogen nutrition promoted the tolerance of two mangrove seedlings to high concentrations of diesel fuel for four months. The removal rate of diesel fuel ranged from 72% to 80% in the non-rhizosphere, but was over 90% in the rhizosphere of both mangrove seedlings. Moreover, increasing nitrogen supplies improved the removal efficiency of diesel fuel in the rhizosphere areas of two mangrove seedlings. |
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