| 我国湖泊富营养化效应区域差异性分析 |
| 摘要点击 3182 全文点击 1714 投稿时间：2011-08-31 修订日期：2011-11-02 |
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| 中文关键词 区域差异性 富营养化效应 叶绿素a 透明度 总氮 总磷 |
| 英文关键词 regional heterogeneity eutrophication effects Chl-a transparency total nitrogen (TN) total phosphorus (TP) |
| 作者 | 单位 | E-mail | | 曹金玲 | 中国环境科学研究院,北京 100012 | | | 许其功 | 中国环境科学研究院,北京 100012
中国环境科学研究院环境基准与风险评估国家重点实验室,北京 100012 | xuqigong@tom.com | | 席北斗 | 中国环境科学研究院,北京 100012
中国环境科学研究院环境基准与风险评估国家重点实验室,北京 100012 | | | 李小平 | 华东师范大学河口海岸国家重点实验室,上海 200062 | | | 杨柳燕 | 南京大学环境学院污染控制与资源化国家重点实验室,南京 210093 | | | 江立文 | 华东交通大学土木建筑学院,南昌 330013 | | | 魏自民 | 东北农业大学生命科学学院,哈尔滨 150030 | | | 吴献花 | 玉溪师范学院玉溪高原湖泊生态环境研究中心,玉溪 653100 | |
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| 中文摘要 |
| 通过分析我国湖泊富营养化相关指标的区域差异性,发现在相同营养物质条件下,浮游藻类生物量却有所差异,说明不同区域浮游藻类对营养物质总氮(TN)和总磷(TP)的利用效率存在显著的区域差异性.利用SPSS中的曲线估计功能,分析我国不同湖泊区域lg Chl-a分别与lg TN和lg TP的线性方程,通过比较线性方程的斜率分析不同湖泊区域浮游藻类对营养物质TN和TP的利用效率,蒙新高原、云贵高原、东北平原-山地、长江中下游平原及华北平原,lg Chl-a与lg TP线性方程的斜率由高到低依次为1.002、 0.817、 0.761、 0.545、 0.250. lg Chl-a与lg TN线性方程的斜率由高到低依次为1.401、 1.058、 0.447、 0.239、 0.099,分别为长江中下游平原、云贵高原、华北平原、东北平原-山地及蒙新高原.由此可见,东北平原-山地和蒙新高原TP对浮游藻类生长的影响大于TN,而在华北平原、长江中下游平原和云贵高原,TN对浮游藻类生长的影响大于TP.另一方面,通过分析浮游藻类生物量与水体透明度之间的相关性,阐明藻类生长繁殖对不同区域湖泊水体透明度影响的区域差异性,结果表明,湖泊中浮游藻类生长繁殖对水体透明度影响最大的是云贵高原,其次是东北平原-山地、蒙新高原和华北平原,长江中下游平原水体透明度与浮游藻类生物量之间没有显著相关性. |
| 英文摘要 |
| Although biomass of algae (Chl-a) were in variant levels between different lake regions in China under the same nutrients conditions, it demonstrated that efficiencies of TN/TP used by algae had regional differences. In order to clarify the differences, curve estimation in SPSS was used to analyze the linear relationship between lg Chl-a and lg TN/lg TP. The slopes of these linear equations were identified as the efficiencies of TN/TP used by algae. The slopes of linear equations from Mengxin Plateau, Yungui Plateau, Northeast Mountain-Plain, lower reach of Yangtze River Plain and North Plain were 1.002, 0.817, 0.761, 0.545, 0.250, orderly. The efficiencies of TN used by algae ranged from the highest to the lowest were lower reach of Yangtze River Plain, Yungui Plateau, North Plain, Northeast Mountain-Plain, Mengxin Plateau, and the slopes of linear equations were 1.401, 1.058, 0.447, 0.239, 0.099, respectively. Consequently, in Northeast Mountain-Plain, Mengxin Plateau the efficiencies of TP used by algae were higher than those of TN, and in Yangtze River Plain, Yungui Plateau, North Plain, the efficiencies of TN used by algae were higher than those of TP. On the other hand, in order to describe the effects of algae on transparency in different lakes, the relationships between Chl-a and SD were analyzed. The results showed that in Yungui Plateau the effect of algae on transparency was the most obvious as the variation of SD explained by Chl-a was the highest, and Northeast Mountain-Plain, Mengxin Plateau and North Plain followed. However, in lower reach of Yangtze River Plain, the relationship between Chl-a and SD was not significant. |
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