Correlation Analysis of OTU Clustering of Leaf Fungi with Environmental Factors
The environmental factors (temperature, humidity, and altitude) sampled at each location were tested to determine their correlation with OTUs, and the OTUs and environmental factors clustered separately (Figure S2). OTU1391, OTU202, OTU953, OTU985, OTU1073, and OTU769 were significantly correlated with temperature and humidity and clustered into one group; OTU420, OTU419, OTU173, and OTU856 were significantly correlated with temperature and clustered into one branch; OTU652, OTU758, OTU1289, and OTU12 were significantly correlated with altitude and clustered into one group; OTU223, OTU76, OTU1066, and OTU96 were significantly correlated with altitude, forming one cluster; and OTU919 was significantly correlated with temperature. Notably, among them, OTU76 and OTU1066 were strongly correlated with altitude, OTU1391 was strongly correlated with humidity, and OTU420, OTU856, and OTU1073 were strongly correlated with temperature.