Foliar C, N and P stoichiometry in subtropical evergreen broad-leaf forest 
in Shitai county, Anhui province

doi:10.3969/j.issn.1000-2006.2014.06.006

Foliar C, N and P stoichiometry in subtropical evergreen broad-leaf forest in Shitai county, Anhui province

KE Li, CUI Jun, YANG Jia, XU Xiaoniu

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (06) : 28-32.

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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (06) : 28-32. DOI: 10.3969/j.issn.1000-2006.2014.06.006

Foliar C, N and P stoichiometry in subtropical evergreen broad-leaf forest in Shitai county, Anhui province

KE Li, CUI Jun, YANG Jia, XU Xiaoniu^*

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Abstract

This study focused on the foliage of major plants in a subtropical evergreen broad-leaf forest in Shitai, Anhui province, and we tried to figure out the trait of foliar C, N and P at different types, and strived to reveal their relationships. The result showed that foliar C concentrations were ranged from 400.08 to 519.36 mg/g, N from 5.15 to 15.39 mg/g and P from 0.30 to 0.97 mg/g for 28 major species. The ratios of m(C):m(N), m(C):m(P)and m(N):m(P)was 29.99-92.25, 467.01-1 443.81 and 10.01-29.29, respectively. There was a strong correlation between N and P, m(C):m(N)and m(C):m(P). The change of m(N):m(P)ratio was mainly determined by the P concentration. As for the relationships among C, N, P concentrations in different types, we concluded that ratio of foliar m(C):m(N)was 59.68 in shrubs, 51.56 in trees, and 44.50 in herb, and significant difference was found between the shrub and herb species. The ratio of foliar m(C):m(P)was 1 043.4 in shrubs, 818.78 in herb, 808.35 in trees. There was significant difference between shrubs and both trees and herbs. These showed that maximum utilization efficiency of N and P existed in shrub species. The m(N):m(P)ratios for shrubs, herbs and trees were more than 16, indicating that evergreen broad-leaf forest was restricted by P utilization. The higher ratio of m(C):m(P)manifested that plants would be more efficient for the restriction elements, reflecting the responses of plants adapting to the environment.

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KE Li, CUI Jun, YANG Jia, XU Xiaoniu. Foliar C, N and P stoichiometry in subtropical evergreen broad-leaf forest in Shitai county, Anhui province[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2014, 38(06): 28-32 https://doi.org/10.3969/j.issn.1000-2006.2014.06.006

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