14C示踪技术在土壤有机质周转研究中的应用

摘要/Abstract

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

中图分类号:

S153.6

李玲, 肖和艾, 黄道友, 吴金水. ¹⁴C示踪技术在土壤有机质周转研究中的应用[J]. 生态学杂志, 2005, (6): 685-690.

LI Ling, XIAO Heai, HUANG Daoyou, WU Jinshui. Application of ¹⁴C-labeling technique in the study on the turnover of soil organic matter[J]. cje, 2005, (6): 685-690.

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¹⁴C示踪技术在土壤有机质周转研究中的应用

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

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