Fig. 8

Redundancy analysis of the effect of ecological factors on active ingredients and growth traits (A-C: Redundancy analysis of the growth traits with climate factors, soil factors, and geographical factors, respectively; D-F: Redundancy analysis of the active ingredients with climate factors, soil factors, and geographical factors, respectively; AG1: number of basal leaves; AG2: leaf height; AG3: plant height; AG4: stem thickness; AG5: leaf length; AG6: leaf width; AG7: leaf split length; AG8: leaf split width; AG9: petiole length; AG10: number of stem leaves; AG11: number of inflorescence branches; UG1: root length; UG2: root diameter; UG3: fresh root weight; UG4: dry root weight; AC1: total anthraquinones; AC2: Aloe emodin; AC3: rhein; AC4: emodin; AC5: chrysophanol; AC6: emodin methyl ether; AC7: total tannins; AC8: gallic acid; AC9: catechins; AC10: total sennosides; AC11: sennoside B; AC12: sennoside A; CF1: annual average temperature; CF2: annual maximum temperature; CF3: annual minimum temperature; CF4: annual rainfall; CF5: average relative humidity; CF6: average water vapor pressure; CF7: average atmospheric pressure; CF8: annual sunshine hours. GF1: Latitude; GF2: longitude; GF3: altitude; SF1: pH; SF2: organic carbon; SF3: soil bulk density; SF4: clay content; SF5: sand content soil; SF6: cation exchange capacity; SF7: conductivity; SF8: 0–10 cm total nitrogen; SF9: 10–20 cm total nitrogen; SF10: 20–30 cm total nitrogen; SF11: 0–10 cm available phosphorus; SF12: 10–20 cm available phosphorus; SF13: 20–30 cm available phosphorus; SF14: 0–10 cm organic matter; SF15: 10–20 cm organic matter; SF16: 20–30 cm organic matter)