Objective: The relationship between the growth of aboveground parts (APs) and underground corms (UCs) of Scirpus planiculmis was studied to provide a scientific basis for the wetland restoration and white crane protection work. Method: Scirpus planiculmis was randomly selected at the research plots during their mature stage with the height and density of the APs and the dry weight of the UCs measured. Results: The relationship between the growth of APs and UCs of Scirpus planiculmis was

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... d. Conclusion: Results show that the growth of APs and UCs was fluctuated, which is due to the different flow direction of the nutrition in Scirpus planiculmis at different times. Moreover, the model can effectively describe the dynamic relation between the growth of APs and UCs and can provide reference for the growth regulation of Scirpus planiculmis.