基于电阻率断层扫描技术探测林地土层厚度

土层厚度对林地生产力具有重要影响,是评价林地土壤质量的重要指标。为了对林地土壤的土层厚度进行调查,该文应用电阻率断层扫描技术对林地土壤土层厚度进行了研究,对其可适用性做出评价。通过在野外试验点对土壤电阻率的实地断层扫描,将其结果与实际测定得到的基岩特征电阻率相结合,预测土层厚度,并将预测值和实地基坑开挖数据进行比较。结果表明,研究区土层厚度多在小于2 m的范围内,电阻率断层扫描技术估测结果与实测结果相符（均方根误差为0.2678）,初步表明该技术在估算林地土层厚度方面具有良好的适用性。该研究结果为土壤学方面相关研究提供重要手段,也将对土壤质量评价和土地利用等相关工作提供指导。...

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Published in农业工程学报 Vol. 31; no. 4; pp. 212 - 216
Main Author 解迎革 李霞 张风宝 王永吉
Format Journal Article
LanguageChinese
Published 中科院水利部水土保持研究所，黄土高原土壤侵蚀与旱地农业国家重点实验室，杨凌 712100%西北农林科技大学理学院,杨凌,712100%中科院水利部水土保持研究所，黄土高原土壤侵蚀与旱地农业国家重点实验室，杨凌 712100 2015
西北农林科技大学理学院，杨凌 712100
Subjects
土壤
土层厚度
基岩
断层扫描
电阻率
土层厚度
基岩
bedrock
tomography
断层扫描
soil thickness
电阻率
soils
electrical resistivity
土壤
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ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2015.04.030

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Summary:土层厚度对林地生产力具有重要影响,是评价林地土壤质量的重要指标。为了对林地土壤的土层厚度进行调查,该文应用电阻率断层扫描技术对林地土壤土层厚度进行了研究,对其可适用性做出评价。通过在野外试验点对土壤电阻率的实地断层扫描,将其结果与实际测定得到的基岩特征电阻率相结合,预测土层厚度,并将预测值和实地基坑开挖数据进行比较。结果表明,研究区土层厚度多在小于2 m的范围内,电阻率断层扫描技术估测结果与实测结果相符（均方根误差为0.2678）,初步表明该技术在估算林地土层厚度方面具有良好的适用性。该研究结果为土壤学方面相关研究提供重要手段,也将对土壤质量评价和土地利用等相关工作提供指导。
Bibliography:Xie Yingge, Li Xia, Zhang Fengbao, Wang Yongji （1. College of Science, Northwest A ＆F University, Yangling 712100, China; 2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Yangling 712100, China）
11-2047/S
electrical resistivity; tomography; soils; soil thickness; bedrock
Soil thickness is the key index for the soil quality evaluation and has great effect on the productivity and properties of the forested soils. Soil thickness is commonly defined as the distance from the soil surface to the bedrock. The direct estimates of bedrock depth through drilling steel or from destructive boreholes and pits are too expensive and laborious in large areas, for the study area is often far away from the road and large tools are not accessible. Geophysical method seems to be a possible non-invasive and efficient alternative. Among available techniques, ground penetrating radar, seismic waves or sound waves often provide confusing or even wrong informatio
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2015.04.030