中国农业科学 ›› 2012, Vol. 45 ›› Issue (17): 3541-3550.doi: 10.3864/j.issn.0578-1752.2012.17.010
耿元波, 史晶晶
收稿日期:
2012-02-17
出版日期:
2012-09-01
发布日期:
2012-05-14
通讯作者:
耿元波,Tel:010-64889557;E-mail:gyb0714@sina.com
作者简介:
耿元波,Tel:010-64889557;E-mail:gyb0714@sina.com
基金资助:
国家自然科学基金项目(41071138)、中国科学院地理科学与资源研究所自主部署创新项目(200905009)
GENG Yuan-Bo, SHI Jing-Jing
Received:
2012-02-17
Online:
2012-09-01
Published:
2012-05-14
摘要: 草地生态系统在区域气候变化及全球碳循环中扮演着重要的角色,草地土壤呼吸的区分是定量评价草地植被和土壤碳平衡的基础,有助于理解和预测草地生态系统对气候变化的响应。文章中论述了稳定碳同位素13C和放射性碳同位素14C在草地土壤呼吸区分中的应用。用于区分土壤微生物呼吸和根呼吸的方法主要有:13C自然丰度法、FACE实验法、13C脉冲标记法;用于区分纯根呼吸和根际微生物呼吸的方法主要有:同位素稀释法、模拟根际沉积物法、14CO2动态模型法、根系分泌物洗涤法。碳同位素法几乎不对草地土壤和植物根系产生干扰,可提高对土壤呼吸各组分的测算精度,在区分草地土壤微生物呼吸、纯根呼吸和根际微生物呼吸等组分方面有较大的应用前景。
耿元波, 史晶晶. 碳同位素在草地土壤呼吸区分中的应用[J]. 中国农业科学, 2012, 45(17): 3541-3550.
GENG Yuan-Bo, SHI Jing-Jing. Application of the Carbon Isotope in the Partitioning of Soil Respiration in Grassland[J]. Scientia Agricultura Sinica, 2012, 45(17): 3541-3550.
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