| 凤眼莲植株碳·氮·磷含量的动态变化 |
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| 引用本文： | 葛绪广,王国祥,李振国,王文林,潘国权.凤眼莲植株碳·氮·磷含量的动态变化[J].安徽农业科学,2008,36(31). |
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| 作者姓名： | 葛绪广 王国祥 李振国 王文林 潘国权 |
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| 作者单位： | 南京师范大学地理科学学院,江苏省环境演变与生态建设重点实验室,江苏南京,210046;湖南科技大学建筑与城乡规划学院,湖南湘潭,411201 |
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| 基金项目： | 教育部科技创新工程重大项目培育基金
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| 摘 要： | 目的]为凤眼莲的利用与控制提供试验参考。方法]在有凤眼莲生长的自然水体中,通过调查与原位试验相结合的方法,跟踪监测研究凤眼莲植株碳、氮、磷含量的变化。结果]结果表明:在生长期初期,植株有机碳的含量迅速升高,到2004年9月底达到最大值,此后呈现下降趋势;全磷、全氮均呈"升-降-升"的趋势,分别于2005年1月初和4月初达到峰值,其中1月初分别为1.08%、4.57%,4月初分别为1.04%、4.55%,3月出现低谷。结论]在氮磷元素的积累过程中,凤眼莲植株氮元素的含量上升缓慢,而磷元素的含量上升快。
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| 关 键 词： | 凤眼莲 凋落物 残体 水环境 |
Dynamic Changes of C, N, P in Eichhornia crassipes(Mart.)Solms |
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| Abstract: | Objective] The research aimed to provide test basis for the use and control of Eichhornia crassipes(Mart.)Solms.Method] Under natural conditions,the changes of C,N,P concentrations in E. crassipes(Mart.)Solms were studied by field investigation and laboratory analysis.Result] During the initial period of growing,the organic carbon of E.crassipes(Mart.)Solms increased quickly,and got the max value at the end of September,2004.Total phosphorus and total nitrogen had the trend of "increase-decrease-increase",and got the max value 1.08% and 4.57% respectively in early January,2005.There was another peak value 1.04% and 4.55% in early April,2005.Conclusion] In the nitrogen and phosphorus accumulating process of the plant, the nitrogen content increased slowly,but the phosphorus content increased quickly. |
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| Keywords: | Eichhornia crassipes(Mart ) Solms Litter Residue Water environment |
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