Estimation of Soil Parameters in Fuzin Opencast Coal Mine
The surface soil samples were collected from Fuxin opencast coal overburden dumps. The spectral reflectance of the soil samples were measured and the characteristic parameters,such as moisture content,pH,electrical conductivity(EC),available potassium(K~+)content,and soil organic matter content(SOM),were analyzed. The Analysis results indicated that the soil spectral reflectance were decreased with increasing of the laid years. The correlations between soil spectral reflectance and soil parameters wore analyzed. The results showed that there was a positive relation between reflectance and pH,and correlation coefficient was decreased with the wavelength increasing There was no relationship between spechal reflectance and EC,and the negative relations were observed between spectral reflectance and other soil lyarameters,K~+ and SOM, respectively. A high correlation coefficient had been found between spectral reflectance and SOM,and the highest correlation coefficient reached-0.76. The exponential correlation Was found between soil spectral reflectance and soil moisture content to analyze all samples.In order to estimate sOM,five wavelengths(1350nm, 1602nm,1862nm,2160nm and 2227nm)were selected based on Principal Component Analysis to build a multiple linear regression model. The multiple correlation coefficient of the calibration model(RC2)was 0.7374,and the multiple correlation coefficient of validation(RV2)was 0.6824.It indicated that the model was able to meet the needs of monitoring SOM in Fuxin Opencast Coal Mine.
Spectral analysis soil moisture content soil organic matter opencast coal overburden dumps
Sun Hong Li Minzan Zhao Yong Li Xiuhua
Key Laboratory of Modern Precision Agriculture System Integration Research,Ministry of Education,China Agricultural University,Qinghua DongLu 17,Haidian,Beijing 100083
国际会议
北京
英文
201-208
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）