探地雷达对兴安落叶松根系特征探测的有效性

doi:10.13287/j.1001-9332.202506.003

应用生态学报 ›› 2025, Vol. 36 ›› Issue (6): 1715-1721.doi: 10.13287/j.1001-9332.202506.003

探地雷达对兴安落叶松根系特征探测的有效性

杨钧涵¹, 李婷婷¹, 龙福强², 李明娟², 王秀伟^1*, 孙涛²

¹东北林业大学林学院, 哈尔滨 150040;
²中国科学院沈阳应用生态研究所, 中国科学院森林生态与管理重点实验室, 沈阳 110016

收稿日期:2024-11-15 接受日期:2025-03-31 出版日期:2025-06-18 发布日期:2025-12-18
通讯作者: *E-mail: wxgreat@nefu.edu.cn
作者简介:杨钧涵, 女, 1999年生, 硕士研究生。主要从事森林资源保护与利用研究。E-mail: 17866840692@163.com
基金资助:
国家重点研发计划项目(2022YFD2201300)

Effectiveness of ground penetrating radar for the detection of root features of Larix gmelinii

YANG Junhan¹, LI Tingting¹, LONG Fuqiang², LI Mingjuan², WANG Xiuwei^1*, SUN Tao²

¹School of Forestry, Northeast Forestry University, Harbin 150040, China;
²CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China

Received:2024-11-15 Accepted:2025-03-31 Online:2025-06-18 Published:2025-12-18

摘要/Abstract

摘要： 采用1000 MHz天线的便携式探地雷达(GPR)系统对中国黑龙江省尚志市东北林业大学帽儿山实验林场2个10 m×10 m样地内的兴安落叶松根系进行探测,比较GPR探测结果与实地挖掘数据,分析探地雷达技术对兴安落叶松不同根径大小(0.2～0.5、0.5～1.0、1.0～2.0、2.0～3.0、3.0～4.0、4.0～5.0和>5.0 cm)和不同土壤深度(0～10、10～20和20～30 cm)根系的识别率。结果表明: 1000 MHz的GPR对根径>2.0 cm的根系识别率达到49.8%,探地雷达反射波的最大时间间隔、总时间间隔、最大振幅面积和总振幅面积与根径均呈显著正相关;对于根径<2.0 cm的根系,GPR的识别率极低,仅为6%。随着土壤深度的增加,根系识别率呈先增加后减小的趋势;在10～20 cm土层中根系识别率最大,为31.4%,在0～10 cm土层中根系识别率最小,为10.2%。探地雷达能有效识别根径(>2.0 cm)较大的兴安落叶松根系,而且对10～20 cm土层中根系具有最高的识别率,而对于小直径和深层兴安落叶松根系的探测能力仍有待提高。

关键词: 探地雷达, 根系探测, 根径大小, 识别率, 土壤深度

Abstract: Adopting a portable ground penetrating radar (GPR) with 1000 MHz antenna, we detected the root system of Larix gmelinii in two 10 m ×10 m plots at Mao’ershan Experiment Forest Farm, Heilongjiang Province. The GPR detection results were compared with field empirical data, and analyzed the identification rate of GPR techno-logy on different root diameter sizes (0.2-0.5, 0.5-1.0, 1.0-2.0, 2.0-3.0, 3.0-4.0, 4.0-5.0, and >5.0 cm) of L. gmelinii and soil depths (0-10, 10-20, and 20-30 cm). The results showed that for roots with diameter greater than 2.0 cm, the identification rate of 1000 MHz GPR reached 49.8%, with the maximum time interval, total time interval, maximum amplitude area, and total amplitude area of GPR reflection waves being significantly positively correlated with root diameter. For roots with diameter <2.0 cm, the identification rate of GPR was extremely low (6%). As the soil depth increased, root identification rate showed a trend of increasing and then decreasing. The root identification rate was highest at 31.4% in the 10-20 cm soil layer and lowest at 10.2% in the 0-10 cm soil layer. GPR could effectively identify root systems of L. gmelinii with larger diameters (>2.0 cm), and showed an optimal identification rate for root systems in the 10-20 cm soil layer. However, its detection ability for small dia-meter root and deep root of L. gmelinii should be improved.

Key words: ground penetrating radar, root detection, root diameter, identification rate, soil depth

杨钧涵, 李婷婷, 龙福强, 李明娟, 王秀伟, 孙涛. 探地雷达对兴安落叶松根系特征探测的有效性[J]. 应用生态学报, 2025, 36(6): 1715-1721.

YANG Junhan, LI Tingting, LONG Fuqiang, LI Mingjuan, WANG Xiuwei, SUN Tao. Effectiveness of ground penetrating radar for the detection of root features of Larix gmelinii[J]. Chinese Journal of Applied Ecology, 2025, 36(6): 1715-1721.

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探地雷达对兴安落叶松根系特征探测的有效性

Effectiveness of ground penetrating radar for the detection of root features of Larix gmelinii

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