| 外源添加营养对安徽太平湖水库藻类增殖影响的研究 |
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| 引用本文： | 赵斌.外源添加营养对安徽太平湖水库藻类增殖影响的研究[J].湖泊科学,1996,8(2):125-132. |
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| 作者姓名： | 赵斌 |
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| 作者单位： | 水利部!中国科学院，水库渔业研究所，武汉430073中国科学院水生生物研究所．邮政编码430072 |
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| 基金项目： | 中国科学院“八五”宏观生物学重点项目(KY85-112)资助 |
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| 摘 要： | １９９２年１１月￣１９９３年１０月，在安徽太平湖水库，同时用藻类生长潜力测试法（ＡＧＰ试验）和外源添加营养的黑白瓶测定初级生产力法，对陵山站的水体分季度进行了分析测试。其结果表明，这两种方法对太平湖水库的营养评价均是行之有效的，而且二者的结果也能相互比较、相互验证；太平湖水库的不同季节，其主要营养限制性因子也各异。在枯水期，磷是藻类种群和密度的第一限制性营养元素；丰水期，由于各营养元素都相对缺乏，
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| 关 键 词： | 太平湖 水库 藻类 限制性因子 AGP测试 增殖 |
| 收稿时间： | 1994/8/26 0:00:00 |
| 修稿时间： | 1994/10/23 0:00:00 |
Studies on influence of exogenous nutrient on algal growth in Taipinghu Reservoir |
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| Zhao Bin.Studies on influence of exogenous nutrient on algal growth in Taipinghu Reservoir[J].Journal of Lake Science,1996,8(2):125-132. |
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| Authors: | Zhao Bin |
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| Institution: | Institute of Reservoir Fisheries, Ministry of Water Conservancy & Chinese Academy of Sciences, Wuhan 430073 |
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| Abstract: | The influence of exogenous nutrients on algal growth was studied in Lingshan Station of Taipinghu Reservoir, Anhui Province during the algal growth season of 1992-1993. Two short-term algal bioassays, i. e. , algal growth potential (AGP) test and black-light bottle test-the main experimental method of determining nutrient limitation for phytoplankton and green macroalgae-were performed integratedly in various seasons in the site experiments. The main additive used included phosphorus (NaH2PO4) and nitrogen (KNO3). The algae was Scenedesmus obliqus.According to these experiments, the results show:(1) The two methods were effective to reveal the trophic state of Taipinghu Reservoir and the results can be extended to large and medium reservoirs in the Changjiang River Basin. The respective one-side defect could be avoided and the two methods be used integratedly.(2) The nutrient limitation of algae varied widely during the study period. In early summer , only the addition of P evoked a clear increase in the growth of algae, revealing that P was the primary limiting nutrient of algal population, biomass and primary production. In late summer and autumn, neither the addition of P nor the addition of N stimulated algal growth as in early summer because of the relative deficiency of other nutrition by the dilution of rainwater in summer rainy season, and the limiting action of P was declining.(3) The optimum P concentration for S. obliqus growth was 0. 20mg/L.The aforementioned analysis can be used for guiding technique of artificial fertilization in large water bodies. Many nutritions should be supplied when P and N are added in late summer and autumn in the Reservoir. |
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| Keywords: | Taipinghu Reservoir algae nutrient limitation algal growth potential test black-light bottle test |
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