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作 者 ：冯虎元 安黎哲 王勋陵

期 刊 ：植物学通报 2000年 17卷 04期 页码：312-318

关键词：稳定碳同位素；植物；环境因子；

摘 要 ：植物稳定碳同位素技术是近年兴起的一项快速、可靠的技术。利用稳定碳同位素技术可以揭示碳同化的过程的许多方面的信息。13C和12C同位素效应，使它们在进行碳循环时发生稳定碳同位素的分馏。植物光合作用过程中CO2经气孔扩散分差和RUBPCase及PEPCase羧化分馏是造成植物稳定碳同位素比率(R=13C/12C)不同于源CO2中碳同位素比率的主要原因。遗传因素和环境因子同时决定植物碳同位素组成。植物稳定碳同位素技术同时还是古气候重建和预测未来环境变化的理论基础。本文综述了光照、温度、水分、二氧化碳、矿质营养、盐分和大气污染物等环境因素对植物稳定碳同位素组成影响方面的研究进展。

Abstract:Stable carbon isotope analysis is a rapid and reliable technique developed in recent years and may reveal many processes of carbon dynamics in plants. As a result of isotope effect, discrimination against 13C occurs during carbon cycle. Plants discriminate against 13C during photosynthesis in ways, which reflect plant metabolism and its environment. 13C/12C ratios is a genetic controlled characteristic and at the same time affected by environmental factors, thus it has stored all kinds of environmental information which is theoretical basis for reconstructing past climate and predicting that of future using stable carbon isotope composition. This paper reviewed the effect of environmental factors such as light, temperature, CO2, water, nutrient, salinity, air pollutants on stable carbon isotope composition in plants.

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