PJB-2020-586
Ecological stoichiometric characteristics of carbon, nitrogen and phosphorus of different plant functional groups in northwestern Guizhou province, China
Yang-Hua Yu, Ying Wang and Xin-Ping Zhong
Abstract
The carbon (C), nitrogen (N) and phosphorus (P) ecological stoichiometric characteristics of plants from northwestern Guizhou Province, China was explored, to better understand their adaptation strategy in cold and drought-affected habitats and to improve the management of sustainable forestry. Leaves of four plant types (evergreen arbors, deciduous arbors, evergreen shrubs and deciduous shrubs), as well as the surrounding litter and soil, were collected and the concentrations of C, N and P were determined. Our study showed: (1) lower nutrient concentrations in plant leaves and soils in this area; and (2) that the nutrient concentrations may be affected by plant species, which is significant in deciduous arbors. The C:N, C:P and N:P ratios were greatest in the litter, smaller in leaves and lowest in soil. Large N:P ratios have been found in the litter of evergreen and deciduous arbor species. We found no significant relationship between nutrient concentrations in soil and plant leaves. N may be an important factor for plant growth in this area. Of the four plant types selected, deciduous shrubs were found to have a great ability to absorb nutrients from their habitats, while evergreen arbors adapted to their habitats by strengthening their defense capability. Evergreen and deciduous shrubs have a beneficial ecological function by conserving water and soil. Our study has provided a theoretic basis for the construction and management of plantation in northwestern Guizhou Province, China.
To Cite this article:
Yu, Y.H., Y. Wang and X.P. Zhong. 2023. Ecological stoichiometric characteristics of carbon, nitrogen and phosphorus of different plant functional groups in northwestern Guizhou province, China. Pak. J. Bot., 55(3): DOI: http://dx.doi.org/10.30848/PJB2023-3(34)
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