基于并行电法的重阳木根系空间分布探测试验研究

Bischofia Polycarpa Root Spatial Distribution Detection Test Research based on Parallel Electrical Method

探测树木根系的空间分布,对了解树木的生长及移栽等具有重要的作用。利用并行电法技术进行树木根系三维空间分布特征探测试验,通过在重阳木周边7.5 m×9.5 m范围内布置观测系统进行数据采集,对采集到的数据进行多测线联合反演得到三维电阻率图像。结果表明:探测范围内的根系分布呈现出南测密集,北侧稀少的特征;探测区域根系根径范围主要分布在200~300 mm;深度为0.46 m位置处根系量最大且根系生物量最多;重阳木根系下方土壤中含水充足,结果图呈现了根系与地下环境间的相互关系。该成果在研究树木根系空间分布范围及特征方面具有良好的应用前景。

It is important to detect the spatial distribution of tree roots, for understand the growth and the trans-planting of the trees. The three-dimensional spatial distribution characteristics of tree roots were detected by using parallel electrical method, through the arrangement of measuring line in the range of 7. 5 m × 9. 5 m around Bischo-fia ,multi line inversion of 3D resistivity images. The results showed that root distribution within the detection range of the south showing measured density,north of scarce features; detection of root diameter range of 200 ？300 mm; The depth was 0. 46 m, the root system was the largest and the root biomass was the most; Chongyang root system in the soil under the water enough, showing the relationship between root and underground environment. The paral-lel electrical method has a good application prospect in the study of spatial distribution and characteristics spatial distribution of the tree roots.