胞外碳酸酐酶对湖泊微藻稳定碳同位素组成的影响  

Effect of Extracellular Carbonic Anhydrase on the Stable Carbon Isotopic Composition of Microalgae in Lake

作　　者：李海涛[1,2] 吴沿友[1] 徐莹[1,2] 

机构地区：[1]中国科学院地球化学研究所 环境地球化学国家重点实验室,贵阳550002 [2]中国科学院研究生院,北京100049

出　　处：《地球与环境》2014年第2期174-178,共5页Earth and Environment

基　　金：国家重大科学研究计划(2013CB956701);国家自然科学基金项目(40973060)

摘　　要：本文以红枫湖、百花湖和阿哈水库中的微藻为研究对象,通过测定湖水中的DIC含量,微藻胞外碳酸酐酶活力和藻体的稳定碳同位素组成等信息,来研究湖泊微藻的碳同位素组成对全球气候变化的响应。结果发现:水体无机碳和微藻胞外碳酸酐酶活力是影响湖泊微藻稳定碳同位素组成变化的决定性因素。本研究所获得的认识将在全球气候变化方面具有重要意义。In this study, the Lakes Hongfeng, Baihua and Aha were studied as the research areas. We focused on the carbon isotopic composition of microalgae in response to global climate change by comparing the concentrations of the dissolved inorganic carbon （DIC）, the activity of the extracellular carbonic anhydrase and the stable carbon isotope compositions in microalgae. From this study, we have got the following conclusions. Both the DIC and the activity of extracellular carbonic anhydrase were the key factors affecting the stable carbon isotopic composition of microalgae. It will be very important for the study of global climate change.

关 键 词：微藻 稳定碳同位素 碳酸酐酶 

分 类 号：Q94-3[生物学—植物学] P593[天文地球—地球化学]