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生态学杂志 ›› 2005, Vol. ›› Issue (6): 685-690.

• 专论与综述 • 上一篇    下一篇

14C示踪技术在土壤有机质周转研究中的应用

李玲1,2, 肖和艾1, 黄道友1, 吴金水1   

  1. 1. 中国科学院亚热带农业生态研究所, 亚热带农业生态重点试验室, 长沙, 410125;
    2. 中国科学院研究生院, 北京, 100039
  • 收稿日期:2004-12-10 修回日期:2005-01-25 出版日期:2005-06-10
  • 通讯作者: 肖和艾
  • 基金资助:
    中国科学院知识创新工程项目(KZCX3-SW-426);国家自然科学基金重点项目(40235057);国家重点基础研究发展规划资助项目(2002CB412503)

Application of 14C-labeling technique in the study on the turnover of soil organic matter

LI Ling1,2, XIAO Heai1, HUANG Daoyou1, WU Jinshui1   

  1. 1. Key Laboratory of Subtropical Agro ecology, Institute of Subtropical Agr iculture, Chinese Academy of Sciences, Changsha 410125, China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2004-12-10 Revised:2005-01-25 Online:2005-06-10

摘要: 采用碳同位素标记有机材料能够较真实地反映其在土壤中的分解和转化过程,是研究土壤有机质周转动力学的必要方法.本文介绍了14C示踪技术在土壤腐殖质的形成与分解过程、有机底物在土壤中的分解和转化及其对原有土壤有机质分解的影响、土壤微生物生物量碳及其周转以及温室气体排放等方面研究中的应用进展.

关键词: 水土流失, 景观格局, DCCA, 子流域, 泾河

Abstract: Using carbon isotope (e.g.radioactive 14C) labeled organic materials i s relativ ely reliable to reflect the dynamics in their decomposition and transformation p rocesses in soil,and an essential method to investigate the turnover of soil or ganic matter.This paper reviewed the advances in the use of 14C-label ing techni que for determining the dynamics in the formation and decomposition of humus sub stances,the decomposition and transformations of organic materials and effects of their addition on the decomposition of native soil organic matter,the turnov er of microbial biomass C,and the emission of carbon gases.

Key words: Soil and water loss, Landscape pattern, DCCA, Watershed, Jinghe River Basin

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