Stoichiometry Traits in Litter Leaves of Typical Secondary Forest at Karst Regions of Central Guizhou Province
Journal Title: 河南科技大学学报（自然科学版） - Year 2017, Vol 38, Issue 5
Abstract
To study the characteristics of nutrient cycling in degraded Karst forest, 10 dominant species in evergreen and deciduous broad-leaved secondary forest from central Guizhou Karst were researched. The chemical stoichiometry traits were analyzed. The results showed that the mass ratios of C, N, P to litter leaves are ( 497. 88 ± 12. 97) mg/g, ( 12. 19 ± 0. 54) mg/g and ( 0. 89 ± 0. 05) mg/g, respectively.The ratios of m ( C) ∶ m ( N) , m ( C) ∶ m ( P) and m ( N) ∶ m ( P) are 43. 17 ± 2. 07, 620. 03 ± 42. 33 and14. 60 ± 0. 81, respectively. The mass ratios of C and P to litter leaves as well as m ( C) ∶ m ( P) in litter leaves of different life type trees show that evergreen trees species are more than deciduous trees species ( P < 0. 05) .The mass ratio of N and P to litter leaves is positive. Compared with other research results, the mass ratios of C, N, P to litter leaves of various tree species in Karst area shows areal variation. The mass ratios of C, N, P to litter leaves in central Guizhou secondary forest are generally high. The decomposition rate of leaf litter is faster. The N and P elements mineralization are released in proportion to mineralization, and the decomposition of litter leaves is not affected by the mass ratio of organic matter.
Authors and Affiliations
Lixian SHU, Fajian PI, Lifei YU, Jun LUO, Congjun YUAN
Keywords
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