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| 氮及氮磷比对附着藻类及浮游藻类的影响 | |
| 引用本文： | 宋玉芝,秦伯强,高光.氮及氮磷比对附着藻类及浮游藻类的影响[J].湖泊科学,2007,19(2):125-130. |
| 作者姓名： | 宋玉芝 秦伯强 高光 |
| 作者单位： | 1. 华中农业大学植物营养与生态环境研究室,武汉,430070;长江流域水环境监测中心,武汉,430010 2. 中国水利水电科学研究院水环境研究所,北京,100038 3. 华中农业大学植物营养与生态环境研究室,武汉,430070 |
| 摘 要： | 2005年5月至11月,在河北省YH水库选取5个具有代表性的样点,进行了微囊藻毒素-LR的调查,同时,测定了相应各样点的TN,TP,NH4-N,NO3-N和PO4-P.结果显示,水库中微囊藻毒素-LR(MC-LR)随季节发生变化,其中,7-10月期间相对较高,且大部分超过了生活饮用水地表水标准限值(1 μg/L);MC-LR与水体中的N、P之间的相互关系表明,5-7月期间,水库MC-LR与TP呈正相关,与NH4-N和TN/TP呈负相关;8-9月期间,水库中TP逐渐降低,但其它降低速率低于TN,造成TN/TP明显降低,MC-LR与TP和TN/TP呈正相关,与NH4-N呈负相关;10-11月期间,大量藻细胞死亡,释放到水体中MC-LR也逐渐下降,这时,大量外源营养盐也进入水库,造成微囊藻毒素-LR的变化与TN、NH4-N、NO3-N呈显著或极显著负相关.这说明在不同季节下,微囊藻毒素-LR与营养盐的关系不同,必须视实际情况而定. |
| 关 键 词： | 富营养化 微囊藻毒素-LR 岭回归 水库 河北省 水库 季节发生 微囊藻毒素 关系表 Relationship Hebei Province reservoir different 情况 营养盐 细胞死亡 低速率 负相关 水体 标准限值 地表水 生活饮用水 变化 显示 |
| 收稿时间： | 2006-04-10 |
| 修稿时间： | 2006-07-08 |
Effect of nutrient on periphytic aglae and phytoplankton |
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| SONG Yuzhi,QIN Boqiang and GAO Guang.Effect of nutrient on periphytic aglae and phytoplankton[J].Journal of Lake Science,2007,19(2):125-130. | |
| Authors: | SONG Yuzhi QIN Boqiang and GAO Guang |
| Institution: | 1.Lab of Plant Nutrition and Ecological Environment Research, Huazhong Agricultural University, Wuhan 430070, P. R. China;2 .Department of Water Environment, Institute of Water and Hydro Research, Beijlng 100038, P. R. China;3 .Monitoring center of Aquatic Environment in the Yangtze Basin, Wuhan 430010 ,P. R. China |
| Abstract: | The effects of nutrients on periphytton and phytoplankton in the condition with and without macrophyte were studied. The results show :1 ) When the nitrogen concentration was 5 mg/L, the effects of the nitrogen vs phosphorus ratio on phytoplankton were more sensitive than periphyton. While the nitrogen concentration was 2 mg/ L, this effect was no significant different between the periphyton and phytoplankton. 2) When the ratio of nitrogen vs phosphorus was 15, the periphyton biomass increased significantly following the increasing of nitrogen, but hytoplankton biomass was relatively stable. When this ratio was 25, the biomass of both periphyton and phytoplankton were increased significantly following the increment of nitrogen. 3 ) The periphyton biomass was higher and increased more fast following the increasing of nitrogen in the condition without macrophyte than with macrophyte, while it was reverse for the phytoplankton. |
| Keywords: | eutrophication microcystin-LR(MC-LR) ridge regression reservoirs |
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