| 外来种伊乐藻光合能力对三种生态因子的响应研究 |
| Study on the responses of the photosynthetic capacity of the alien species Elodea nuttallii to three ecological factors |
| 投稿时间：2012-10-21 修订日期：2013-02-24 |
| DOI： |
| 中文关键词:伊乐藻 光照强度 温度 pH 光合产氧量 适应性 |
| 英文关键词:Elodea nuttallii Light intensity Temperature pH photosynthetic oxygen production, Adaptability |
| 基金项目:国家高技术研究发展计划（863计划） |
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| 中文摘要: |
| 为了解外来种伊乐藻的生态适应性,通过测定其光合产氧量的方法,研究了其光合能力对温度、光照强度和pH3种生态因子的响应。结果表明:在温度和光照范围分别为10～35℃和1×103～5.3×103lx的条件下,伊乐藻光合净产氧量和总产氧量都与温度和光照呈正相关,随温度和光照强度的增加,光合净产氧量和总产氧量呈增加趋势,对不同的温度和光照组合均有很强的适应性;在5300lx条件下,30℃时总产氧量最高,为1.814mg/(L.h.g),净产氧量也最高,为1.47mg/(L.h.g);在30℃时,5300lx光照强度下其总产氧量和净产氧量均最高,光合能力强,但未达光饱和点;最低光强度条件下未达光补偿点。在pH5～9的5种梯度内,适宜pH范围为5～7,pH为6时生长最佳。伊乐藻光合能力对3种生态因子响应的基本生理生态学特征为:对光照强度和温度的适应性较强,在较强的光照、较高的温度和中性略偏酸的水环境中生长较好。 |
| 英文摘要: |
| In order to know the ecological adaptability of alien apecies Elodea nuttallii , the responses of photosynthesis capacity of Elodea nuttallii to three main ecological factors , as light intensity , temperature and pH were studied by measuring the photosynthetic oxygen production. The results showed that with the temperature and illumination 10～35℃and 1×103～5.3×103lx conditions , the net and gross photosynthetic oxygen production of Elodea nuttallii showed a positive correlation with the temperature and illumination. With the increasing of temperature and light intensity , the net and gross photosynthetic oxygen production increased;it showed very strong adaptability to different temperature and illumination combinations. In the same light condition, at about 30℃ the gross production of oxygen was , the most 1.814 mg/(L.h.g), net oxygen production was also the most 1.47mg(L.h.g) . With the same temperature , 5300lx light intensity , the gross and net photosunthetis oxygen production were the most , photosynthetic capability was strong, but not reached the light saturation point; in the minimum light intensity conditions, it also didn't reach its light compensation point; Among the range pH 5 -9 , the suitable pH values ranged from 5.0 to 7.0 , and the optimun was pH 6.0. The basic physiological and ecological characteristics of which the response of Elodea nuttallii photosynthetic capacity to three ecological factors were as the follows : it had strong adaptability to the light intensity and temperature. It grew well in the strong light intensity, higher temperature and meta-acid water environment. |
| 靳萍,胡灵卫,靳同霞,李元龙,马剑敏.2013.外来种伊乐藻光合能力对三种生态因子的响应研究[J].水生态学杂志,34(1):25-29. |
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