应用微根管法测定细根指标方法评述

被引：25

作者：

李俊英

王孟本

史建伟

机构：

[1] 山西大学黄土高原研究所

来源：

生态学杂志 | 2007年 / 11期

关键词：

细根; 微根管; 生物量; 生产; 周转; 寿命;

D O I：

10.13292/j.1000-4890.2007.0327

中图分类号：

Q948 [植物生态学和植物地理学];

学科分类号：

071012 ; 0713 ;

摘要：

树木细根(直径<2mm)在森林生态系统能量流动和物质循环中起着重要的作用。原有的细根生产周转研究中常采用的土钻法、内生长法、挖掘法、根室法和土柱法等,均不能直接观察到细根的动态变化。微根管法是一种非破坏性、可定点直接观察和研究植物根系的方法,为研究细根的生长、衰老、死亡、分解和再生长的过程提供了有效的工具,尤其适用于细根周转、寿命和分解等方面的研究。但该技术不能直接测定单位面积的细根生物量、细根化学组成及细根周转对土壤碳和养分循环的影响,需要与土钻法结合。本文就运用微根管法对细根生物量、生产、周转和寿命等指标的研究方法进行了评述。

引用

页码：1842 / 1848

页数：7

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