Fig. 4
From: Plant community restoration time is a key factor affecting plant nutrient and species richness
Relationship between soil nitrogen and phosphorus ratios and plant nitrogen and phosphorus ratios and species richness of plant communities. A: The relationship between the ratio of the plant community weighted mean nitrogen to the plant community weighted mean phosphorus (CWMN: P) and the ratio of the total soil nitrogen to the total soil phosphorus (TN: TP). B: The relationship between the ratio of the plant community weighted mean nitrogen to the plant community weighted mean phosphorus (CWMN: P) and the ratio of the available soil nitrogen to the available soil phosphorus (AN: AP). C: The relationship between the plant species richness and the ratio of the total soil nitrogen to the total soil phosphorus (TN: TP). D: The relationship between the plant species richness and the ratio of the available soil nitrogen to the available soil phosphorus (AN: AP). Note: ^p < 0.1, **p < 0.01.
