黄土露天矿区重构土壤体积含水率表征与反演

doi:10.19741/j.issn.1673-4831.2018.0506

生态与农村环境学报 ›› 2019, Vol. 35 ›› Issue (4): 529-537.doi: 10.19741/j.issn.1673-4831.2018.0506

黄土露天矿区重构土壤体积含水率表征与反演

罗古拜¹, 曹银贵^1,2, 白中科^1,2, 况欣宇¹, 王舒菲¹, 宋蕾¹

1. 中国地质大学(北京)土地科学技术学院, 北京 100083;
2. 自然资源部土地整治重点实验室, 北京 100035

收稿日期:2018-08-21 出版日期:2019-04-25 发布日期:2019-04-25
通讯作者: 曹银贵 E-mail:caoyingui1982@126.com
作者简介:罗古拜(1992-),男,宁夏固原人,硕士生,研究方向为土地复垦与土地利用管理。E-mail:1091915713@qq.Com
基金资助:
国家自然科学基金（41701607，41571508）；中央高校基本科研业务费优秀教师项目（2-9-2017-103）

Representation and Inversion of Reconstructed Soil Volumetric Water Content in Loess Open Pit Mining Area

LUO Gu-bai¹, CAO Yin-gui^1,2, BAI Zhong-ke^1,2, KUANG Xin-yu¹, WANG Shu-fei¹, SONG Lei¹

1. School of Land Science and Technology, China University of Geosciences, Beijing 100083, China;
2. Key Laboratory of Land Consolidation and Rehabilitation, Ministry of Natural Resources, Beijing 100035, China

Received:2018-08-21 Online:2019-04-25 Published:2019-04-25

摘要/Abstract

摘要：

以中煤平朔安太堡露天矿南排土场为研究对象，采用环刀采样称重法、探地雷达（GPR）探测法、方差分析法、拟合分析法和对比分析法等方法揭示复垦地重构土壤剖面土壤体积含水率的深度差异在GPR信号图中的特征，并建立土壤体积含水率和介电常数的耦合关系模型。研究结果表明：（1）矿区排土场不同位置及同一剖面不同深度处重构土壤剖面体积含水率差异明显。（2）P₂剖面在10~20和50~60 cm深度处呈现2个明显的峰值，P₅剖面0~20 cm深度内土壤体积含水率较高，标准偏差达4.84%。（3）通过对比发现Topp模型计算出的土壤体积含水率略高于采样实测出的土壤体积含水率。采样实测和Topp模型计算出的土壤体积含水率差值的绝对值最大为3.20%，最小为0.13%，平均偏差率为13.42%。（4）拟合关系模型反演出的土壤体积含水率略低于采样实测出的土壤体积含水率。2种方式测量出的土壤体积含水率差值的绝对值最大为3.11%，最小为0.23%，平均偏差率为9.83%。因此，GPR可用于分析矿区重构土壤的体积含水率差异。该研究成果不仅可丰富矿区土壤重构的基本原理，也为采用GPR技术进行无损探测土壤体积含水率提供了有力支撑。

关键词: 土壤体积含水率, 土壤重构, 土地复垦, 探地雷达, 介电常数

Abstract:

The south dumping site of the Pingshuo Antaibao Open-Pit Coal Mine of China Coal Energy was taken as a research object, aiming to reveal the characteristics of the depth difference of the soil volumetric water content in the reconstructed soil profile of the reclaimed land in the ground penetrating radar(GPR) signal map, and a fitting model of Soil volumetric water content and dielectric constant was established. The volumetric water content of the reconstructed soil profile at different locations of the dump site in the mining area was obtained by two methods:ring knife sampling weighing and GPR detection. The test results were analyzed by means of analysis of variance, fitting analysis and comparative analysis. The results show that the volumetric water content of reconstructed soil profiles in different positions of dump and different depths of the same section is obviously different;the P₂ profile showed two distinct peaks at 10-20 and 50-60 cm depth. Within 0-20 cm depth of P₅ profile, soil volumetric water content was higher, and the standard deviation was 4.84%. By comparison, the soil volumetric water content calculated by the Topp model was slightly higher than the measured soil volumetric water content. The absolute value of the difference of soil volumetric water content calculated by sampling and Topp model was 3.20% and the minimum was 0.13%, and the average deviation rate was 13.42%. The soil volumetric water content of the model inversion was slightly lower than the measured soil volumetric water content. The absolute value of the difference in soil volumetric water content measured by the two methods was 3.11%, the minimum was 0.23%, and the average deviation rate was 9.83%. GPR can analyze the difference of soil volumetric water content in the reconstructed area of the mining area. In addition, the research results in this paper are helpful to enrich the basic principles of soil reconstruction in mining areas and to provide strong support for GPR non-destructive detection of soil volumetric water content.

Key words: soil volumetric water content, soil reconstruction, land reclamation, ground penetrating radar, dielectric constant

中图分类号:

X833

罗古拜, 曹银贵, 白中科, 况欣宇, 王舒菲, 宋蕾. 黄土露天矿区重构土壤体积含水率表征与反演[J]. 生态与农村环境学报, 2019, 35(4): 529-537.

LUO Gu-bai, CAO Yin-gui, BAI Zhong-ke, KUANG Xin-yu, WANG Shu-fei, SONG Lei. Representation and Inversion of Reconstructed Soil Volumetric Water Content in Loess Open Pit Mining Area[J]. Journal of Ecology and Rural Environment, 2019, 35(4): 529-537.

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黄土露天矿区重构土壤体积含水率表征与反演

Representation and Inversion of Reconstructed Soil Volumetric Water Content in Loess Open Pit Mining Area

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