| 福建某河流甲藻水华与污染指标的关系 |
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| 引用本文： | 边归国,陈宁,胡征宇,刘国祥.福建某河流甲藻水华与污染指标的关系[J].湖泊科学,2010,22(3):405-410. |
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| 作者姓名： | 边归国 陈宁 胡征宇 刘国祥 |
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| 作者单位： | 1. 福建省环境保护局,福州,350003
2. 中国科学院水生生物研究所,淡水生态与生物技术国家重点实验室,武汉,430072 |
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| 摘 要： | 2009年1-2月份,在福建某河流发现大面积水华,河水呈深褐色经对气温、水温、pH、溶解氧、高锰酸盐指数、氨氮、总氮、总磷以及藻细胞密度、叶绿素a等因子的监测,发现水中有甲藻、隐藻、硅藻、绿藻、蓝藻、裸藻和其它常见种,其中优势种为佩氏拟多甲藻(Peridiniopsis penardii),细胞密度为0.1×10~5-333×10~5cells/L.水体营养盐丰富,总氮浓度为2.50-8.65mg/L、总磷浓度为0.09-1.15mg/L.另外,pH值、溶解氧异常升高,水华反反复复持续一个多月时间.经相关分析,拟多甲藻细胞密度与气温、pH值和总氮相关系数分别为-0.323(P=0.027)、0.327(P=0.025)和0.316(P=0.030),显著相关,偏相关分析表明,拟多甲藻细胞密度与水温相关系数为-0.4894(P=0.008),非常显著负相关.结果显示,pH值和溶解氧升高是甲藻水华产生的表征现象,总氮可能是本次甲藻水华生长的限制因子,而气温和水温的变化既是甲藻水华产生的重要原因,但超过甲藻适宜的生长温度对其也起到一定的抑制作用.由于调查区干旱、少雨、梯级电站过密等因素所导致的水流速过缓,加上足够的营养盐和合适的温度,促使本次拟多甲藻水华的发生.
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| 关 键 词： | 拟多甲藻 水华 总氮 限制因子 |
| 收稿时间： | 2009/4/21 0:00:00 |
| 修稿时间： | 2009/7/30 0:00:00 |
A river in Fujian algal dinoflagellate relationship with the pollution index |
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| BIAN Guiguo,CHEN Ning,HU Zhengyu and LIU Guoxiang.A river in Fujian algal dinoflagellate relationship with the pollution index[J].Journal of Lake Science,2010,22(3):405-410. |
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| Authors: | BIAN Guiguo CHEN Ning HU Zhengyu and LIU Guoxiang |
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| Institution: | Fujian Environmental Protection Bureau, Fuzhou 350003, P. R. China,Fujian Environmental Protection Bureau, Fuzhou 350003, P. R. China,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China and State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China |
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| Abstract: | A large dinoflagellate bloom were found in Fujian Province in January and February of 2009. Water temperature, pH, dissolved oxygen, permanganate index, ammonia nitrogen, total nitrogen, total phosphorus and algal cell density, chlo-rophyll-a and other factors were monitored. Dominant species, Peridiniopsis penardii, cell density reached 0.1 × 105- 333 × 103 cells/L, and total nitrogen concentration was 2. 50 - 8. 65 mg/L, total phosphorus concentration 0.09 - 1.15mg/L. In addition, pH, dissolved oxygen unconventionally increased in more than a month duration. By correlation analysis, cell density of P. Penardii and temperature (r= -0.323, P =0.027), pH value (r = 0.327,P =0.025) and total nitrogen (r=0.316, P = 0.030) were significantly correlated. Partial correlation analysis showed that cell density of P. Penardii and water temperature was significantly negative correlation( r = - 0.4894, P = 0.008). The results showed that the increase of pH and dissolved oxygen was the phenomenon of dinoflagellate bloom, and total nitrogen may be the growth limiting factors of dinoflagellate, and changes in air temperature and water temperature was the important reason of occurrence of dinoflagellate bloom. Other factors, drought of the in vestigation area, slow water flow dense, coupled with sufficient nutrients and suitable temperature, led to occurrence of dinoflagellate bloom. |
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| Keywords: | Peridiniopsis penardii water bloom total nitrogen limiting factor |
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