渭干河-库车河三角洲绿洲土壤盐渍化现状特征及其与光谱的关系

利用遥感、土壤光谱及土壤盐分数据相结合的方法进行土壤盐渍化监测，选择2组不同特征的变量，对渭干河-库车河三角洲绿洲土壤盐渍化的现状特征进行了探讨，并计算了14个盐分因子与光谱波段(405 nm，410 nm，…，890 nm)的Pearson相关系数.结果发现，除少数光谱波段外，盐分因子与光谱波段之间的相关性并不显著. 在此基础上，利用后向多元线性回归分析，建立了部分盐分因子的预测模型，并对pH模型的精度进行了验证. 最后在野外考察，GPS定点和土壤采样分析的基础上，给出了土壤盐渍化程度及其分布范围. 

Relationships between Soil Salinization and Spectra in the Delta Oasis of Weigan and Kuqa Rivers

Data from remote sensing, ground-based electromagnetic induction and ground soil salinity were used to analyze soil salinization in the delta oasis of Weigan and Kuqa Rivers, and to calculate the Pearson correlation coefficient between 14 soil salt factors and bands of 405 nm, 410 nm,…, 890 nm. The results generally showed little correlation. Based on the above data, a model for predicting soil salts was established using multivariate linear regression analysis, and a precision model for predicting pH was also validated. In addition, the distribution extent and the degree of soil salinization were shown based on field surveying, GPS and soil sample analysis.