Figure 3
From: Assessment of soil quality in an arid and barren mountainous of Shandong province, China
Linear regression analysis between MDS and TDS for linear and non-linear models. Linear-TDS-SQI: Linear soil quality index of the total data set, Linear-MDS-SQI: Linear soil quality index of the minimum data set, Non-linear-TDS-SQI: Non-linear soil quality index of the total data set, Non-linear-MDS-SQI: Non-linear soil quality index of the minimum data set. (A): The fitting curve of linear MDS and TDS, (B): the fitting curve of non-linear MDS and TDS.
