Correlation matrix of average monthly DOC concentration with fixed land cover proportion per subcatchment per year together with the seasonal maximum NDVI.

Slope (n = 50), Mire (n = 50), Forest (n = 50), Lake (n = 9), NDVI (n = 50), Elevation (n = 50), and DOC (n = 218).坡地（Slope，n=50）、沼泽（Mire，n=50）、森林（Forest，n=50）、湖泊（Lake，n=9）、归一化差分植被指数（NDVI，Normalized Difference Vegetation Index，n=50）、海拔（Elevation，n=50）以及溶解有机碳（DOC，Dissolved Organic Carbon，n=218）