Study on Soil Salinization Characteristics of Farmlands Along West Trunk Canal in Ningxia Based on Redundancy Analysis

Based on the statistical analysis and redundancy soil sampling points along West Trunk Canal in Ningxia of China, spatial distribution characteristics relations among total salt content, pH value ions’ composition at different depths are obtained. The correlation coefficients, eigenvalues interpretation variances ions each layer analyzed discussed. According to analysis, it can be concluded that farmlands is severely salinized, especially for near shallow surface. results show 0–80 cm layer, angles between CO32- HCO3- value, smaller than other environmental factors, indicating significantly affected by content HCO3-, they positively correlated. K+ Cl- have acute angle with salt, also Different from others, 80–100 Na+ Mg2+, Cl-, HCO3-.