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地球科学进展  2005, Vol. 20 Issue (1): 106-112    DOI: 10.11867/j.issn.1001-8166.2005.01.0106
生态学研究     
增强的UV-B对湖泊生态系统的影响研究
张运林1,2,秦伯强1,陈伟民1
1.中国科学院南京地理与湖泊研究所,江苏 南京 210008;
2.中国科学院研究生院,北京 100039
Effects of Increased UV-B Radiation on Aquatic Ecosystems in Lakes
ZHANG Yunlin1, 2, QIN Boqiang1, CHEN  Weimin1
1.Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
 全文: PDF(235 KB)  
摘要:

近20多年来,由于平流层臭氧层减薄引起紫外辐射(UV-B)增强而导致严重的生态学后果,已受到各国广泛的重视,并对此进行了深入研究,尤其集中在海洋浮游植物初级生产者及淡水食物网上。综述了国外在UV-B对湖泊生态系统影响的研究现状与动态,增强的UV-B在湖泊中呈指数衰减,不同湖泊衰减系数变化很大;光衰减系数与溶解性有机碳(DOC)、有色可溶性有机物(CDOM)一般呈显著性正相关;增强的UV-B对浮游植物、浮游细菌、浮游动物及鱼类均有不同程度的影响;由于不同生物具有不同适应UV-B伤害的机制,湖泊生态系统的结构和功能也势必会发生变化。最后提出了未来在太湖等富营养化湖泊UV-B的研究设想。

关键词: UV-B溶解性有机碳(DOC)浮游植物浮游细菌适应    
Abstract:

 In the past 20 years, the decrease in stratospheric ozone concentrations has provoked an increase of UV-B radiation in the wavelength range from 280 to 320nm. The ecological effects of increased UV-B on global environment attract more and more scientific studies. This paper demonstrates the advances of effects of UV-B radiation on aquatic organisms and aquatic ecosystems in lakes. The penetration of UV-B radiation into lakes is highly dependent on the concentration of dissolved organic carbon (DOC) and chromophoric dissolved organic matter(CDOM) in the water body. Many empirical regression relationships between the concentration of DOC and the diffuse attenuation coefficient, the euphotic depth (1% of surface irradiance) were found in many studies. Many studies demonstrate a variety of aquatic organism ranging from bacterioplankton and phytoplankton to zooplankton, and even aquatic vertebrates such as fish are vulnerable to damage from increased UV-B radiation. In general, aquatic organisms have three levels responses to minimize the exposure to UV-B: (1) behavioral avoidance, (2) manufacture or sequester UV-B absorbing compounds, (3) DNA repair mechanisms. Some assumptions about the effects of UV-B radiation on Lake Taihu ecosystem are presented. 

Key words: UV-B radiation    Dissolved organic carbon    Phytoplankton    Bacterioplankton    Adaption
收稿日期: 2003-11-10 出版日期: 2005-01-25
:  P343.3   
基金资助:

中国科学院知识创新工程重大项目“长江中下游地区湖泊富营养化的发生机制与控制对策研究”(编号:KZCX1-SW-12);国家自然科学基金项目“浅水湖泊水动力过程对底泥和悬浮物作用的环境效应研究”(编号:40071019);中国科学院研究生社会实践项目“太湖梅粱湾水域溶解性有机碳(DOC)对UV-B衰减的影响”(编号:200334)资助.

通讯作者: 张运林     E-mail: ylzhang@niglas.ac.cn
作者简介: 张运林 (1976-),男,湖南邵阳人,博士研究生,主要从事湖泊光学和湖泊生态学研究. E-mail:ylzhang@niglas.ac.cn
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引用本文:

张运林;秦伯强;陈伟民. 增强的UV-B对湖泊生态系统的影响研究[J]. 地球科学进展, 2005, 20(1): 106-112.

ZHANG Yunlin, QIN Boqiang, CHEN Weimin . Effects of Increased UV-B Radiation on Aquatic Ecosystems in Lakes. Advances in Earth Science, 2005, 20(1): 106-112.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2005.01.0106        http://www.adearth.ac.cn/CN/Y2005/V20/I1/106

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