Spatial differentiation of soil nutrients and their ecological chemometrics based on geographic detector in National Agricultural Park of Tangchang, Southwest China.

Correlation analysis The correlation analysis results show that most TOC, N, P, K, C/N, C/P, C/K, N/P, N/K and P/K have extremely significant ( p <0.01) correlations ( Fig 3 ), especially the correlations between TOC-C/N, TOC-C/K, C/N-C/K, C/P-C/K, C/N-N/P, C/P-N/P, N-N/K, N/P-N/K and P/K-N/P are above 0.5 or below -0.5.

also in 2,408 other papers