| 磷亏缺芦苇对氮梯度变化的生理响应 |
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| 引用本文： | 魏亚利,王艳雪,郭逍宇,赵文吉,苗茜. 磷亏缺芦苇对氮梯度变化的生理响应[J]. 内蒙古环境科学, 2011, 0(11): 153-154,191 |
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| 作者姓名： | 魏亚利 王艳雪 郭逍宇 赵文吉 苗茜 |
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| 作者单位： | [1]首都师范大学资源环境与旅游学院,北京100048 [2]北京市城市环境过程与数字模拟重点实验室-省部共建国家重点实验室培育基地,北京100048 [3]三维信息获取与应用教育部重点实验室,北京100048 [4]资源环境与地理信息系统北京市重点实验室,北京100048 [5]北京地址工程研究所,北京100037 |
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| 摘 要： | 研完了磷亏缺芦苇在不同氮浓度梯度下（0mg／L、2mg／L、5mg／L、15mg／L）干重、鲜重、叶面积等形态学指标和叶片叶绿素、丙二醛（MDA）、超氧化物歧化酶（SOD）、过氧化氢酶（CAT）和过氧化物酶（POD）等生理学指标的变化，研究结果表明：芦苇形态学指标和叶片叶绿素含量均随氮浓度的增加呈现先增加（低浓度范围：0-5mg／L）后减小（高浓度范围：5—15mg／L）的趋势。MDA及活性氧清除系统指标则呈现先降低（低浓度范围：0-5mg／L）后升高（高浓度范围：5—15mg／L）的趋势。表明在低浓度范围内，氮浓度增加可以缓解芦苇磷亏缺胁迫症状，而当氯浓度超过了芦苇的耐受阂值之后（5mg／L），芦苇在磷亏缺和氮过量的双重胁迫下，体内活性氧清除系统被破坏。与正常磷供给相比（10mg／L），磷亏缺芦苇对氯的耐受阈值下降了96．8％—90．6％。研究结果可为富营养化水体水生态环境的改善提供科学依据。
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| 关 键 词： | 缺亏缺 芦苇 氮梯度 生长发育 生理特性 |
Physiological Effect of Phragmites Australis by Phosphorus Staraved under Different Concetration of Nitrogen Supply |
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| Wei Yali,Wang Yanxue,Guo Xiaoyu,Zhao Wenji,Miao Qian. Physiological Effect of Phragmites Australis by Phosphorus Staraved under Different Concetration of Nitrogen Supply[J]. Inner Mongolia Environmental Protection, 2011, 0(11): 153-154,191 |
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| Authors: | Wei Yali Wang Yanxue Guo Xiaoyu Zhao Wenji Miao Qian |
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| Affiliation: | 1. College of Resources Environment and Tourism, Capital Normal University, Beijing 100048;2. Urban Environmental Processes and Digital Modeling Laboratory, Beijing 100048,3.Laboratory of 3D Information Acquisition and Application, MOST; Beijing 100048;4.Beijing Municipal Key Laboratory of Resources Environment and GIS. Beijing 100048;5.Beijing Institute for Geological Engineering. Beijing 100037) |
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| Abstract: | The effects of dry weight, fresh weight, the content of chlorophyll, the MDA, SOD, CAT and POD activites in the leaves of Phragmites australis by phosphorus strayed under different concentration of nitrogen （0mg/L, 2 mg/L,5 mg/L,15 mg/L） were investigated. The index of configuration and the content of chlorophyll increased at the lower concentration of nitrogen range （0-5 mg/L）, while decreased at the higher concentration of nitrogen range （5-15 mg/L）. The content of MDA, SOD, CAT and POD decreased at he lower concentration of nitrogen range （0-5 mg/L）, while increased at the higher concentration of nitrogen range （5-15 mg/L）. The results showed that at the lower concentration of nitrogen range, nitrogen alleviate the inhibitory effect of Phragmites australis growth and its oxidative damage by phosphorus strayed, while higher concentration nitrogen could provoke a major oxidative insult. |
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| Keywords: | phosphorus staraved Phragmiles australis nitrogen supply growth physiological characteristics |
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