The results indicated that with the increase of altitude,the importance value of Scirpus mariqueter,a representative species at early succession stage,decreased gradually,while those of Spartina alterniflora and Phragmites australis increased.

• 结果表明:随着高程的升高；演替早期的代表物种海三棱?草(Scirpus mariqueter)的重要值逐渐减小；互花米草(Spartina alterniflora)和芦苇(Phragm ites australis)的重要值增大.