C, N, P Chemometrics of Leymus chinensis Leaves During Grassland Retrogressive Succession Stages

doi:10.11924/j.issn.1000-6850.casb16010066

Abstract

Abstract: Carbon, nitrogen and phosphorus are important elements in biogeochemical cycles, they play an important role in the ecosystem, especially the leaves of plants, carbon, nitrogen, the study about the ecological stoichiometry for C, N and P in the plant leaves is a hot topic of ecological field. By studying the content of C, N and P in the Leymus chinensis leave for different succession stages of grassland degradation in Jiangjiadian grassland of Jilin Province to explore the characters of ecological stoichiometry. The results showed 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 C 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 C: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 character provide useful guidance on different degradation succession Stages

CLC Number:

S154.4

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