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作 者 ：马 晔1,2,3,刘锦春1,2,3

期 刊 ：西北植物学报 2013年 7期 页码：1492~1500

关键词：稳定碳同位素；气孔导度；环境因子；功能群；群落冠层；碳循环；

Keywords:stable carbon isotope, stomatal conductance, environment factors, functional group, community canopy, carbon cycle,

摘 要 ：稳定碳同位素技术已成为研究植物与环境之间关系最有效的方法之一。由于植物羧化效率的不同、¹²C和¹³C在植物体内迁移速率以及外界环境的不同，不同植物体内稳定性碳同位素比率（δ¹³C值）有一定的差异。该文概述了稳定碳同位素的基本理论，并从气孔导度、叶肉细胞导度、叶片羧化效率分析了δ¹³C变化的生物学机理；对近年来国内外有关不同环境因子对植物δ¹³C值的影响、δ¹³C值在群落及生态系统水平（以功能群、群落冠层及树轮为重点）、以及δ¹³C值在碳循环中的应用研究进展进行综述，为以后稳定碳同位素研究提供参考。

Abstract:Stable carbon isotope analysis has become one of the most effective techniques in phytoecology.Due to the differences of carboxylation efficiency,the migration rate in plants and the effects of environment factors,the stable isotope ratio (δ¹³C) is variable in different plants.In this paper, the basic theory of stable carbon isotope and its biological mechanism through stomatal,mesophyll cell conductance and leaf carboxylation efficiency were presented.We discussed how did the environmental factors influence plants δ¹³C and analyzed applications of δ¹³C in community and ecosystem on different functional groups,community canopy and tree-rings.Moreover,we gave a brief introduction of carbon stable isotope technique applied in carbon cycle.We expect this review can be a useful base to the research of carbon stable isotope in plant ecology.

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