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- Title
C, N and P stoichiometric characteristics of different root orders for three dominant tree species in subalpine forests of western Sichuan, China.
- Authors
TANG Shi-shan; YANG Wan-qin; XIONG Li; YIN Rui; WANG Hai-peng; ZHANG Yan; XU Zhen-feng
- Abstract
Fine root order was classified according to Pregitzer's method. This study measured carbon (C), nitrogen (N) and phosphorus (P) concentrations of the 1-5 root orders (diameter <2 mm) in three dominant subalpine tree species (Betula albosinensis, Abies faxoniana and Picea asperata) of western Sichuan. Their stoichiometric ratios of different root orders were also calculated. The results showed that C concentration, C/N and C/P increased, but N and P concentrations decreased from the first to fifth order of fine root for all tree species. No significant changes in N/P among root orders were detected in each species. There were significant differences in C, N, P concentrations and their stoichiometric ratios among the tree species. The species-associated differences were dependent on root order. There were significant correlations between C, N, P concentrations and their stoichiometric ratios in the three tree species.
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2015, Vol 26, Issue 2, p363
- ISSN
1001-9332
- Publication type
Article