阜新市主要园林树种叶片生态化学计量特征

Abstract

Abstract: The values of stoichiometric properties of leaf C, N and P contents of 55 garden tree species in Fuxin city Liaoning Province, China were derived. The results showed that the C, N and P contents varied in ranges of 496-664, 7.5-26.6 mg·g^-1 and 1.0-2.2 mg·g^-1, and the C/N, C/P and N/P in ranges of 22.4-74.3, 262-522 and 5.4-13.8, respectively. Moreover, there was a significant correlation between leaf N and C/N or C/P (P<0.001). The leaf N and P contents and N/P of evergreen coniferous tree species were significantly higher than those of broadleaf deciduous tree species (P<0.05), but C/N and C/P of evergreen coniferous tree species were significantly lower than those of broadleaf deciduous tree species (P<0.05). The leaf N content and N/P of tree species were significantly higher than those of shrub species (P<0.05), but the differences in P content, C/P and C/P were not significant (P>0.05). These results revealed that the C storage capability and nutrient use efficiency of garden tree species were high.The garden tree species were N-limited in the study area.

Key words: nutrient cycling, urban garden plant, leaf, stoichiometric property, Liaoning Province

WANG Kai, WU Xiang-yun, LU Hui, XU Dong-yang, LI Na. Leaf Stoichiometric Properties of Garden Tree Species in Fuxin City[J].Arid Zone Research, 2013, 30(2): 236-241.

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Leaf Stoichiometric Properties of Garden Tree Species in Fuxin City

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