15N同位素稀释法测定土壤氮素总转化速率研究进展

被引：13

作者：

程谊

蔡祖聪

张金波

机构：

[1] 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)

来源：

土壤 | 2009年 / 41卷 / 02期

关键词：

15N的同位素稀释法; 氮总转化速率; 15N丰度; 分析方法; FLUAZ模型;

D O I：

10.13758/j.cnki.tr.2009.02.007

中图分类号：

S153.6 [土壤成分];

学科分类号：

摘要：

同位素稀释法是测定土壤中N素总转化速率最重要的方法之一。自从上世纪50年代Kirkham和Bartholomew提出同位素稀释法的基本原理以后,随着分析技术的长足发展,一些更精确的分析和数值优化方法被广泛使用,N转化概念模型已经日益完善,使测定N的总转化速率成为现实,对土壤N素循环机制的深入研究提供了可能性。然而,15N标记方法研究土壤中N的总转化速率仍然存在较大的不确定因素。本文综述了15N同位素稀释法测定土壤N素总转化速率的原理和计算方法,以期推动同位素稀释法的研究和发展。

引用

页码：165 / 171

页数：7

共 19 条

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