| 黑藻和苦草对氨氮、硝态氮和磷吸收动力学研究 |
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| 引用本文： | 陈少毅,许超,姚瑶,黄立章,张云涛. 黑藻和苦草对氨氮、硝态氮和磷吸收动力学研究[J]. 环境科学与技术, 2012, 0(8): 34-36,50 |
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| 作者姓名： | 陈少毅 许超 姚瑶 黄立章 张云涛 |
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| 作者单位： | 华南农业大学资源环境学院;广东普通高校土壤环境与废物资源农业利用重点实验室;农业部生态农业重点开放实验室;江西省水利规划设计院 |
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| 基金项目： | 农业部生态农业重点开放实验室联合探索课题(2010-LH13);广东省自然科学基金项目(9451064201003780);华南农业大学校长基金(K09219) |
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| 摘 要： | 为在不同营养状况的富营养化水体修复中选择相应的养分吸收效率的水生植物,比较黑藻(Hydrilla verticillata)和苦草(Vallisneria natans)对氨氮、硝态氮和磷的吸收动力学特征。结果表明,黑藻和苦草对氨氮、硝态氮和磷的最大吸收速率Vmax分别为4.38、5.31;3.15、2.23;1.63、3.57μmol/(L.h.g)。米氏常数Km分别为84.7、376.7;45.8、6.0;54.4、516.2μmol/L。苦草对氨氮和磷的吸收具有较高的Vmax和Km值,而黑藻对氨氮和磷的吸收具有较低的Vmax和Km值。
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| 关 键 词： | 黑藻 苦草 氨氮 硝态氮 磷 动力学 |
Uptake Kinetics of Ammonia,Nitrate and Phosphorus by Submerged Macrophytes Hydrilla verticillata and Vallisneria natans |
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| CHEN Shao-yi,XU Chao,,YAO Yao,HUANG Li-zhang,ZHANG Yun-tao. Uptake Kinetics of Ammonia,Nitrate and Phosphorus by Submerged Macrophytes Hydrilla verticillata and Vallisneria natans[J]. Environmental Science and Technology, 2012, 0(8): 34-36,50 |
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| Authors: | CHEN Shao-yi XU Chao YAO Yao HUANG Li-zhang ZHANG Yun-tao |
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| Affiliation: | 1(1.School of Natural Resource and Environment,South China Agricultural University,Guangzhou510642,China;2.Key Laboratory of Soil Environment and Waste Reuse in Agriculture of Guangdong Higher Education,Guangzhou510642,China;3.Key Laboratory of Ecological Agriculture of Ministry of Agriculture,Guangzhou510642,China;4.Jiangxi Water Conservancy Planning and Designing Institute,Nanchang330029,China) |
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| Abstract: | To select proper submerged macrophytes according to the status of eutrophic water,the uptake kinetics of NH4+,NO3-and H2PO4-by Hydrilla verticillata and Vallisneria natans were studied.Results indicated that the maximum uptake rate of NH4+,NO3-and H2PO4-by Hydrilla verticillata and Vallisneria natans were 4.38,5.31,3.15,2.23,1.63,3.57 μmol/(L.h.g) and the constant were 84.7,376.7,45.8,6.0,54.4 and 516.2 μmol/L respectively.On uptake of NH4+ and H2PO4-,Vallisneria natans has a higher uptake rate and constant,whereas Hydrilla verticillata has a lower value. |
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| Keywords: | Hydrilla verticillata Vallisneria natans ammonia nitrate phosphorus kinetics |
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