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当前位置: 首页 > 文章 > 大气CO_2浓度升高对大型海藻孔石莼生长和色素含量的影响 大连海洋大学学报 2013,28 (5) 481-486
Position: Home > Articles > Effects of elevated atmospheric CO_2 concentration on growth and pigment contents of macroalga Ulva pertusa Journal of Dalian Ocean University 2013,28 (5) 481-486

大气CO_2浓度升高对大型海藻孔石莼生长和色素含量的影响

作  者：
付晚涛;刘佳;张菊林;冯天威;苏延明;朱翔铃;李月圆;刘靖;刘远;曹淑清;刘宏文
单  位：
大连海洋大学经济管理学院;辽宁省高校近岸海洋环境科学与技术重点实验室;大连市环境监测中心;大连海洋大学海洋科技与环境学院;大连海洋大学水产与生命学院
关键词：
高浓度CO2;孔石莼;生长;色素含量
摘  要：
在实验室模拟研究了大气CO2浓度升高对海洋中大型绿藻孔石莼Ulva pertusa的生长和色素含量的影响。设置4个独立试验,每个试验的CO2浓度分别为387、500、600、800 mg/L。每个试验设6个海水培养系统,其中3个通入一定浓度的CO2作为试验系统,另外3个通入大气作为对照系统。在每个海水培养系统中,分别装入25 L过滤海水(滤膜孔径为0.22μm),放入(50.0±1.0)g的孔石莼进行培养,试验进行7 d。结果表明:高浓度CO2对孔石莼生长无显著影响(P>0.05),但降低了孔石莼中叶绿素a和类胡萝卜素的含量;试验结束时,CO2浓度为387、500、600、800 mg/L时,试验系统中孔石莼的叶绿素a含量分别为(855.9±31.6)、(780.8±6.2)、(677.3±22.1)、(585.1±16.9)μg/g(鲜质量),分别为对照系统的98.3%、91.8%、78.4%和71.7%,试验系统中孔石莼的类胡萝卜素含量分别为(185.6±5.0)、(167.8±2.4)、(150.6±2.3)、(128.3±4.3)μg/g(鲜质量),分别为对照系统的97.7%、91.5%、80.4%和69.4%;而对照系统中试验开始时和试验结束时,孔石莼的叶绿素a含量和类胡萝卜素含量均无显著性差异(P>0.05)。
译  名：
Effects of elevated atmospheric CO_2 concentration on growth and pigment contents of macroalga Ulva pertusa
作  者：
FU Wan-tao;LIU Jia;ZHANG Ju-lin;FENG Tian-wei;SU Yan-ming;ZHU Xiang-ling;LI Yue-yuan;LIU Jing;LIU Yuan;CAO Shu-qing;LIU Hong-wen;College of Marine Science-Technology and Environment,Dalian Ocean University;Key Laboratory of Nearshore Marine Environmental Science and Technology of Liaoning Province's University;College of Economics & Management,Dalian Ocean University;College of Fisheries and Life Science,Dalian Ocean University;Center of Environment Monitoring of Dalian;
关键词：
rising atmospheric CO2 level;;Ulva pertusa;;growth;;pigment content
摘  要：
Effects of rising atmospheric CO2 levels on growth and pigment contents was studied in macroalga Ulva pertusa in a laboratory.The macroalga was cultivated at a biomass of( 50.0 ± 0.1) g per tank in six 25 L sands-filtered( 0.22 μm) seawater culture systems( SCS) subjected to aeration with CO2 at a rate of 387,500,600 and800 mg/L( as test system) and subjected to aeration with air( as control system) for 7 days.The results showed that there were no significant effects of rising atmospheric CO2 levels on growth of the macroalga( P > 0.05).However,the chlorophyll a( Chl.a) and carotenoid levels were found to be decreased,with Chl.a content of( 855.9 ±31.6),( 780.8 ± 6.2),( 677.3 ± 22.1),and( 585.1 ± 16.9) μg/g( fresh weight) at atmospheric CO2 concentration of 387,500,600 and 800 mg/L at the end of the experiment,respectively,and representing 98.3%,91.8%,78.4% and 71.7% in the control group,respectively.The average contents of carotenoid were found( 185.6± 5.0) μg/g( fresh weight) at the atmospheric CO2 concentration of 387 mg/L,( 167.8 ± 2.4) μg/g( fresh weight)at the atmospheric CO2 concentration of 500 mg/L,( 150.6 ± 2.3) μg/g( fresh weight) at the atmospheric CO2 concentration of 600 mg/L,and( 128.3 ± 4.3) μg/g( fresh weight) at the atmospheric CO2 concentration of 800mg/L,accounting for 97.7%,91.5%,80.4% and 69.4% in the control groups,respectively.Nevertheless,there were no significant differences in contents of carotenoid and Chl.a in both the control system and the test system at the beginning and the end of the experiment( P > 0.05).

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