地球科学进展 ›› 2009, Vol. 24 ›› Issue (6): 606 -611. doi: 10.11867/j.issn.1001-8166.2009.06.0606

综述与评述 上一篇    下一篇

探地雷达技术在植物根系探测研究中的应用
崔喜红,陈晋,关琳琳   
  1. 北京师范大学地表过程与资源生态国家重点实验室,北京师范大学资源学院,北京  100875
  • 收稿日期:2008-12-22 修回日期:2009-05-13 出版日期:2009-06-10
  • 通讯作者: 崔喜红 E-mail:cxh@ires.cn
  • 基金资助:

    教育部新世纪人才计划项目“基于PRI指数的实际光能利用率估算模型”资助.

The Application of Ground Penetrating Radar to Plant Root System Detection

Cui Xihong, Chen Jin, Guan Linlin   

  1. State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Resources & Technology,Beijing Normal University, Beijing 100875,China
  • Received:2008-12-22 Revised:2009-05-13 Online:2009-06-10 Published:2009-06-10

植物根系传统研究方法的局限性迫切需要寻求一种无损性的根系探测技术。 基于无损性探测的特点,探地雷达已被证明是一种能够应用于根系探测的潜在工具。对探地雷达探测原理及其在植物根系形态绘图、根径大小和生物量测量等几个方面中的应用研究进行了综述,阐述了该方法的优势和应该注意的问题。根系形态分布探测需要提高雷达的发射频率和保持足够小的扫描间距;在估计植物根系大小和生物量方面主要依赖于有效的、能够反映相关特征的雷达探测信息参数的提取,同时还需要高级的数值分析和数据处理技术的支持。
 

 With the recognition of the important functions of roots in ecosystems, root-related parameters such as root size, biomass, distribution, structure and 3D architecture are urgently required for a better understanding of root functions, biogeochemical cycles, and various aspects of global change. Traditional methods for measuring roots are labor intensive and destructive in nature, limiting quantitative and repeated assessments in long-term research on roots. Ground-Penetrating Radar (GPR) offers a nondestructive measurement for plant roots. This article aims to introduce the GPR principles and to review the existing researches involved in the application of GPR to map plant root systems, measure root diameters and estimate root biomass. The results suggest that high antenna frequency and small profile grid is required in order to map root systems distribution with higher spatial resolution by GPR. Moreover, estimating root diameters and biomass with higher accuracy are mainly depended on feature extraction from GPR reflecting signals. Meanwhile, advanced data analysis and processing technique is also critical with urgent needs for practical applications. Although significant further works are needed, the GPR provides good potential to support plant root system detection and measure.

中图分类号: 

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