Estimation of As and Cu Contamination in Agricultural Soils Around a Mining Area by Reflectance Spectroscopy: A Case Study
文献类型：SCI/SSCI论文
| 作者 | Ren H. Y. ; Zhuang D. F. ; Singh A. N. ; Pan J. J. ; Qiu D. S. ; Shi R. H. |
| 发表日期 | 2009 |
| 关键词 | data pre-processing heavy metal regression models soil iron spectral reflectance heavy-metals organic-matter spectra china |
| 英文摘要 | Concentrations of Iron (Fe), As, and Cu in soil samples from the fields near the Baoshan Mine in-Hunan Province, China, were analyzed and soil spectral reflectance was measured with an ASD FieldSpec FR spectroradiometer (Analytical Spectral Devices, Inc., USA) under laboratory condition. Partial least square regression (PLSR) models were constructed for predicting soil metal concentrations. The data pre-processing methods, first and second derivatives (FD and SD), baseline correction (BC), standard normal variate (SNV), multiplicative scatter correction (MSC), and continuum removal (CR), were used for the spectral reflectance data pretreatments. Then, the prediction results were evaluated by relative root mean square error (RRMSE) and coefficients of determination (R(2)). According to the criteria of minimal RRMSE and maximal R(2), the PLSR models with the FD pretreatment (RRMSE = 0.24, R(2) = 0.61), SNV pretreatment (RRMSE = 0.08, R(2) = 0.78), and BC-pretreatment (RRMSE = 0.20, R(2) = 0.41) were considered as the final models for predicting As, Fe, and Cu, respectively. Wavebands at around 460, 1400, 1900, and 2 200 nm were selected as important spectral variables to construct final models. In conclusion, concentrations of heavy metals in contaminated soils could be indirectly assessed by soil spectra according to the correlation between the spectrally featureless components and re; therefore, spectral reflectance would be an alternative tool for monitoring soil heavy metals contamination. |
| 出处 | Pedosphere |
| 卷 | 19 |
| 期 | 6 |
| 页 | 719-726 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1002-0160 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23148]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Ren H. Y.,Zhuang D. F.,Singh A. N.,et al. Estimation of As and Cu Contamination in Agricultural Soils Around a Mining Area by Reflectance Spectroscopy: A Case Study. 2009. |
入库方式： OAI收割
来源：地理科学与资源研究所
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