Notice of RetractionC, N, P ecological stoichiometry characteristics of Leymus chinensis leaves at different grassland degradation succession stages

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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Carbon, nitrogen and phosphorus are important elements in biogeochemical cycles, they play an important role in the ecosystem, the study about the ecological stoichiometry for C, N and P in the plant leaves is a hot topic of ecological field. The characteristics of ecological stoichiometry are explored by studying the content of C, N and P in the leaves of Leymus chinense at different succession stages of grassland degradation from the Jiangjiadian grassland in Da´an city in western Jilin Province. The results show that the maximum C content appears in lightly degraded grassland, and the minimum C content appears in the very seriously degraded grassland. However, the maximum N content appears in the very seriously degraded grassland, and the minimum N content appears in the undegraded grassland. The maximum P content appears in the very seriously degraded grassland, and the minimum P content appears in the moderate degraded grassland. The maximum value of C: N appears in the undegraded grassland, the minimum value of C: N appears in the very seriously degraded grassland. The maximum value of C: P appears in the moderate degraded grassland, the minimum value of C: P appears in the undegraded grassland. The maximum value of N: P appears in the seriously degraded grassland, the minimum value of N: P appears in the undegraded grassland. The undegraded grassland is limited by both N and P; the degraded grassland is limited by P. The ecological stoichiometry characteristic provide useful guidance on different degradat- on succession Stages.