微根窗技术及其在植物根系研究中的应用

被引：34

作者：

白文明

程维信

李凌浩

机构：

[1] 中国科学院植物研究所植被数量生态学重点实验室

[2] 中国科学院植物研究所植被数量生态学重点实验室北京

来源：

生态学报 | 2005年 / 11期

关键词：

微根窗; 根系生产; 根系周转; 根系死亡;

D O I：

暂无

中图分类号：

Q944.54 [根与变态根];

学科分类号：

071001 ;

摘要：

植物根系对固定植株和获得水分和养分起重要作用,但是土壤不可观测性的限制,给根系生态学的研究带来一定的困难。因此,找到原位观察根系生长的方法对研究根系生态学就显得尤为重要。目前微根窗技术被认为是研究根系生态学最有前途的方法。从微根窗系统的组成、微根窗管的安装、微根窗图象的收集及微根窗数据的利用等几个方面进行了概述。阐述了在微根窗使用和操作过程中需要注意的几个问题,微根窗管与土壤之间的良好接触是获得高质量微根窗图像数据的前提和基础;图象收集的频率依赖于测定和计算的根系参数,如果想得到根系现存量、生产力、更新和寿命的信息,必须避免采样间隔时间过长。

引用

页码：284 / 289

页数：6

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