| 淀山湖的浮游植物及其能量生产 |
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| 引用本文： | 由文辉.淀山湖的浮游植物及其能量生产[J].海洋湖沼通报,1995(1):47-53. |
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| 作者姓名： | 由文辉 |
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| 作者单位： | 华东师范大学环境科学系!上海200062 |
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| 摘 要： | 浮游植物是水生生态系统中的初级生产者，系统地研究浮游植物的演变以及能量生产，对深入了解水生生态系统的结构和功能，保护和改善水质，都有理论和实际意义。因而引起国内外学者的普遍重视。关于湖泊浮游植物种类组成、密度、多样性指数、初级生产力及其与生态因素的关系的研究很多，但在淀山湖，尚缺乏这些方面，尤其是与环境变化的关系的系统研究。因此，作者在前人工作的基础上，较全面地报道了淀山湖浮游植物与水体环境变化的
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| 关 键 词： | 浮游植物 密度 种类 能量生产 淀山湖 藻类 |
A STUDY ON PHYTOPLANKTON AND ITS ENERGY PRODUCTION IN DIANSHAN LAKE |
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| You Wenhui.A STUDY ON PHYTOPLANKTON AND ITS ENERGY PRODUCTION IN DIANSHAN LAKE[J].Transaction of Oceanology and Limnology,1995(1):47-53. |
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| Authors: | You Wenhui |
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| Abstract: | Based on the data of phytoplankton surveys made in 1959, 1981-1982, 1985 -1986 and 1991-1992 in Dianshan lake, the main ecological changes in the phytoplankton association is discussed and the main results are as follows:1. The average annual increase of phytoplankton density generally decreased from the 1959's to 1985, and exhibited a increasing trend after the 1990's. The species composition tended to become simple, and there were some changes in the proportions of relative number of phytoplankton.2. The primary productivity of phytoplanktpn showed an increasing trend, and the diversity index of community showed a decreasing trend.3. The average caloric value and standing crop of energy of phytoplankton were 11.61 KJ.g-1 DM and 139.82 KJ.m-2, respectively: their seasonal change laws were somewhat different. The energy conversion efficiency of total radiation by phytoplankton averaged 0. 68%. |
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| Keywords: | phytoplankton density species composition diversity index primary productivity energy production |
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