Hyperspectral Estimation Model of Heavy Metal Arsenic in Soil

Table 1. Descriptive statistics of the arsenic content (mg·kg^-1) in soil
View table
View in Article
Table 1. Descriptive statistics of the arsenic content (mg·kg^-1) in soil
重金属最小值平均值最大值标准差河北省背景值
As 10.844 13.230 15.125 1.005 13.6

Table 2. Statistical results of single factor pollution index of the soil arsenic
View table
View in Article
Table 2. Statistical results of single factor pollution index of the soil arsenic
元素最小值平均值最大值样点数
0.7<P_i≤1 1<P_i≤2
As/(mg·kg^-1) 0.797 0.973 1.112 29 19

Table 3. Maximum correlation coefficients of heavy metal As content and spectral indexes
View table
View in Article
Table 3. Maximum correlation coefficients of heavy metal As content and spectral indexes
光谱指标最大相关波段/nm 相关系数
SR 2 342 -0.289^*
FD 1 211 -0.527^**
SD 2 208 -0.470^**
RT 1 740 0.357^*
RTFD 1 359 -0.249
RTSD 1 065 0.485^**
AT 1 740 0.353^*
ATFD 464 -0.370^**
ATSD 2 208 0.372^**
CR 682 0.603^**

Table 4. Results of MLSR model
View table
View in Article
Table 4. Results of MLSR model
参数建模样本验证样本
r 0.814 0.776
RMSE 0.159 0.318
F 29.437 8.482

Table 5. Results of U-PLSR model
View table
View in Article
Table 5. Results of U-PLSR model
参数建模样本验证样本
r RMSE F r RMSE F
FD 0.260 0.753 2.374 0.320 0.687 1.194
ATFD 0.200 0.814 1.689 0.025 0.994 0.239
RTSD 0.213 0.801 1.826 0.296 0.722 0.939
CR 0.365 0.647 3.872 0.381 0.649 2.465

Table 6. Results of M-PLSR model
View table
View in Article
Table 6. Results of M-PLSR model
参数建模样本验证样本
r 0.852 0.812
RMSE 0.147 0.312
F 32.384 8.598

Tools

Get Citation

Copy Citation Text

Zhi-yuan LI, Fan DENG, Jun-liang HE, Wei WEI. Hyperspectral Estimation Model of Heavy Metal Arsenic in Soil[J]. Spectroscopy and Spectral Analysis, 2021, 41(9): 2872

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites