Xinjiang Agricultural Sciences ›› 2022, Vol. 59 ›› Issue (1): 223-230.DOI: 10.6048/j.issn.1001-4330.2022.01.026
• Animal Husbandry Veterinarian·Agricultural Information·Prataculture·Agricultural Eeconomy • Previous Articles Next Articles
Hazirtiali Keyim(), LI Xinguo(), ZHAO Hui, Mamattursun Eziz
Received:
2021-01-19
Online:
2022-01-20
Published:
2022-02-18
Correspondence author:
LI Xinguo
Supported by:
艾孜提艾力·克依木(), 李新国(), 赵慧, 麦麦提吐尔逊·艾则孜
通讯作者:
李新国
作者简介:
艾孜提艾力·克依木(1995-),男,新疆乌鲁木齐人,硕士研究生,研究方向为干旱区土壤资源变化及其遥感应用,(E-mail) alikeyim@163.com
基金资助:
CLC Number:
Hazirtiali Keyim, LI Xinguo, ZHAO Hui, Mamattursun Eziz. Hyperspectral Estimation of Surface Soil Organic Matter Content in the Oasis Based on Geographically Weighted Regression Model[J]. Xinjiang Agricultural Sciences, 2022, 59(1): 223-230.
艾孜提艾力·克依木, 李新国, 赵慧, 麦麦提吐尔逊·艾则孜. 基于地理加权回归模型的绿洲土壤表层有机质含量高光谱估算[J]. 新疆农业科学, 2022, 59(1): 223-230.
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URL: http://www.xjnykx.com/EN/10.6048/j.issn.1001-4330.2022.01.026
数据集 Dataset | 样本数 Samples | 最小 Minimum | 最大值 Maximum | 均值 Mean | 标准误差 Standard deviation | 变异系数 Coefficient of variation |
---|---|---|---|---|---|---|
全集 Total | 31 | 2.37 | 51.47 | 21.20 | 10.81 | 0.50% |
建模集Calibration dataset | 20 | 5.09 | 51.47 | 21.81 | 10.86 | 0.55% |
验证集Validation dataset | 10 | 9.54 | 41.92 | 21.88 | 9.97 | 0.46% |
Table 1 Statistical characteristics of soil organic matter content
数据集 Dataset | 样本数 Samples | 最小 Minimum | 最大值 Maximum | 均值 Mean | 标准误差 Standard deviation | 变异系数 Coefficient of variation |
---|---|---|---|---|---|---|
全集 Total | 31 | 2.37 | 51.47 | 21.20 | 10.81 | 0.50% |
建模集Calibration dataset | 20 | 5.09 | 51.47 | 21.81 | 10.86 | 0.55% |
验证集Validation dataset | 10 | 9.54 | 41.92 | 21.88 | 9.97 | 0.46% |
光谱变换 Spectrum transform | 特征波段 Characteristic waveband | R2 |
---|---|---|
1/R' | 788,796,896,1 298 | -0.688,-0.685,-0.679,-0.683 |
1/R″ | 753,797,803,814 | 0.638,0.733,0.635,0.643 |
lgR' | 1 087,1 088,1 285,1 586 | 0.661,0.544,0.651,0.572 |
lgR″ | 645,694,805,1 450 | 0.562,-0.561,0.546,0.539 |
1/lgR' | 1 349,1 422,1 441,1 958 | -0.633,0.628,0.625,0.658 |
1/lgR″ | 797,1 348,1 450,1 456 | 0.645,-0.586,-0.596,-0.559 |
Table 2 Organic matter model bands and spectral transformation forms through extremely isability test
光谱变换 Spectrum transform | 特征波段 Characteristic waveband | R2 |
---|---|---|
1/R' | 788,796,896,1 298 | -0.688,-0.685,-0.679,-0.683 |
1/R″ | 753,797,803,814 | 0.638,0.733,0.635,0.643 |
lgR' | 1 087,1 088,1 285,1 586 | 0.661,0.544,0.651,0.572 |
lgR″ | 645,694,805,1 450 | 0.562,-0.561,0.546,0.539 |
1/lgR' | 1 349,1 422,1 441,1 958 | -0.633,0.628,0.625,0.658 |
1/lgR″ | 797,1 348,1 450,1 456 | 0.645,-0.586,-0.596,-0.559 |
光谱变换 Spectrum transform | 土壤指数 Soil index | 特征波段 Characteristic waveband | R2 | |
---|---|---|---|---|
R | DSI | 1 067 | 1 771 | 0.61 |
RSI | 1 087 | 1 089 | 0.67 | |
1/R | DSI | 1 766 | 1 767 | 0.63 |
RSI | 955 | 962 | 0.59 | |
lgR | DSI | 1 087 | 1 089 | 0.67 |
RSI | 955 | 958 | 0.59 | |
1/lgR | DSI | 1 766 | 1 767 | 0.66 |
RSI | 769 | 797 | 0.68 | |
lg(1/R) | DSI | 955 | 962 | 0.59 |
RSI | 955 | 958 | 0.59 |
Table 3 Characteristic bands of 2-D exponents used for modeling
光谱变换 Spectrum transform | 土壤指数 Soil index | 特征波段 Characteristic waveband | R2 | |
---|---|---|---|---|
R | DSI | 1 067 | 1 771 | 0.61 |
RSI | 1 087 | 1 089 | 0.67 | |
1/R | DSI | 1 766 | 1 767 | 0.63 |
RSI | 955 | 962 | 0.59 | |
lgR | DSI | 1 087 | 1 089 | 0.67 |
RSI | 955 | 958 | 0.59 | |
1/lgR | DSI | 1 766 | 1 767 | 0.66 |
RSI | 769 | 797 | 0.68 | |
lg(1/R) | DSI | 955 | 962 | 0.59 |
RSI | 955 | 958 | 0.59 |
光谱变换 Spectrum transform | 建模集 Calibration dataset | 光谱变换 | 建模集 Calibration dataset | ||
---|---|---|---|---|---|
R2 | RMSE | R2 | RMSE | ||
R DSI | 0.89 | 3.86 | lgR DSI | 0.84 | 4.60 |
R RSI | 0.79 | 5.18 | lgR RSI | 0.85 | 4.54 |
1/R' | 0.36 | 9.93 | 1/lgR' | 0.02 | 17.08 |
1/R″ | 0.09 | 15.28 | 1/lgR″ | 0.69 | 9.74 |
1/R DSI | 0.90 | 3.74 | 1/lgR DSI | 0.91 | 2.71 |
1/R RSI | 0.91 | 2.56 | 1/lgR RSI | 0.94 | 3.34 |
lgR' | 0.80 | 5.48 | lg(1/R) DSI | 0.92 | 3.67 |
lgR″ | 0.74 | 7.04 | lg(1/R) RSI | 0.88 | 4.20 |
Table 4 Accuracy test of GWR model
光谱变换 Spectrum transform | 建模集 Calibration dataset | 光谱变换 | 建模集 Calibration dataset | ||
---|---|---|---|---|---|
R2 | RMSE | R2 | RMSE | ||
R DSI | 0.89 | 3.86 | lgR DSI | 0.84 | 4.60 |
R RSI | 0.79 | 5.18 | lgR RSI | 0.85 | 4.54 |
1/R' | 0.36 | 9.93 | 1/lgR' | 0.02 | 17.08 |
1/R″ | 0.09 | 15.28 | 1/lgR″ | 0.69 | 9.74 |
1/R DSI | 0.90 | 3.74 | 1/lgR DSI | 0.91 | 2.71 |
1/R RSI | 0.91 | 2.56 | 1/lgR RSI | 0.94 | 3.34 |
lgR' | 0.80 | 5.48 | lg(1/R) DSI | 0.92 | 3.67 |
lgR″ | 0.74 | 7.04 | lg(1/R) RSI | 0.88 | 4.20 |
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