| 狐尾藻对水体和沉积物中碱性磷酸酶动力学特征的影响 |
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| 引用本文： | 赵海超,王圣瑞,金相灿,焦立新.狐尾藻对水体和沉积物中碱性磷酸酶动力学特征的影响[J].环境科学研究,2011,24(11):1256-1262. |
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| 作者姓名： | 赵海超 王圣瑞 金相灿 焦立新 |
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| 作者单位： | 1.河北北方学院农林科技学院, 河北 张家口 075131;中国环境科学研究院湖泊生态环境创新基地, 国家环境保护湖泊污染控制重点实验室, 北京 100012 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2008ZX07105-005); 国家自然科学基金项目(40703017,40873079) |
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| 摘 要： | 在室内模拟条件下栽培狐尾藻，通过对上覆水、间隙水和沉积物中碱性磷酸酶动力学参数变化的分析，揭示了沉水植物对湖泊富营养化影响的酶学机制. 结果表明:在试验条件下，栽培狐尾藻使上覆水、间隙水和沉积物中的碱性磷酸酶的最大反应速率(Vmax)均有所降低；狐尾藻对上覆水和底质中碱性磷酸酶反应速率及亲和力的抑制作用比较明显，对间隙水主要是抑制溶解性碱性磷酸酶的Vmax；狐尾藻对土壤中碱性磷酸酶的影响比同一营养水平的沉积物大，与沉积物相比，土壤作底质时上覆水中碱性磷酸酶的Vmax和Km(米氏常数)高，底质中碱性磷酸酶的Vmax和Km低；沉积物中碱性磷酸酶的Vmax呈上升趋势，与上覆水相反，间隙水中碱性磷酸酶的Vmax季节性变化明显，其最高值出现在7—8月.
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| 关 键 词： | 狐尾藻 沉积物 水体 碱性磷酸酶 动力学 |
| 收稿时间： | 2011/3/1 0:00:00 |
| 修稿时间： | 2011/5/18 0:00:00 |
Effects of Myriophyllum spicatum on Kinetic Characteristics of Alkaline Phosphatase in Water and Sediments |
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| ZHAO Hai-chao,WANG Sheng-rui,JIN Xiang-can and JIAO Li-xin.Effects of Myriophyllum spicatum on Kinetic Characteristics of Alkaline Phosphatase in Water and Sediments[J].Research of Environmental Sciences,2011,24(11):1256-1262. |
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| Authors: | ZHAO Hai-chao WANG Sheng-rui JIN Xiang-can and JIAO Li-xin |
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| Institution: | ZHAO Hai-chao1,2,WANG Sheng-rui2,JIN Xiang-can2,JIAO Li-xin2 1.Department of Agricultural and Forestal Science and Technology,Hebei North University,Zhangjiakou 075131,China 2.State Environmental Protection Key Laboratory for Lake Pollution Control,Research Center of Lake Eco-environment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China |
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| Abstract: | The enzyme mechanism of an inactivating eutrophic lake by submerged plants was determined by analyzing the kinetic parameter variations of alkaline phosphatase in the overlying water,interstitial water and sediments under indoor simulating conditions with the plant Myriophyllum spicatum.The results indicated that under the experimental condition Vmax of the alkaline phosphatase,the overlying water,the interstitial water and the sediments were all reduced by planting Myriophyllum spicatum.Myriophyllum spicat... |
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| Keywords: | Myriophyllum spicatum sediment water alkaline phosphatase kinetics |
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