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- Title
Effects of precipitation and interspecific competition on Quercus mongolica and Pinus koraients seedings growth.
- Authors
Wu Jing-Lian; Wang Miao; Lin Fei; Hao Zhan-Qing; Ji Lan-Zhu; Liu Ya-Qin
- Abstract
Aiming at the variation of precipitation pattern caused by global warming, a field simulation experiment was conducted to study the effects of 30% increase (+W) and decrease (-W) of precipitation on the morphology, growth, and biomass partitioning of mono- and mixed cultured seedlings of Quercus mongolica and Pinus koraiensis, the two dominant tree species in temperate broad-leaved Korean pine mixed forest in Changbai Mountains. Comparing with monoculture, mixed culture increased the canopy width and main root length of Q. mongolica seedlings, but decreased the basal diameter, plant height, leaf number, and dry masses of root, stem, leaf and whole plant of P. koraiensis seedlings significantly. Treatment (-W) increased the stem/mass ratio while decreased the main root length of Q. mongolica seedlings, and decreased the main root length, leaf number, dry masses of leaf and whole plant, and leaf/mass ratio, while increased the stem/mass ratio of P. koraiensis seedlings significantly, compared with treatment CK. Treatment (+W) had no significant effect on these indices of the two species. At early growth stage, interspecific competition and precipitation pattern had significant effects on the morphology and growth of the seedlings, and the responses were much stronger for P. koraiensis than for Q. mongolica.
- Subjects
GLOBAL warming; GREENHOUSE effect; PINUS koraiensis; METEOROLOGICAL precipitation; SIMULATION methods &; models; MORPHOLOGY; BIOMASS; SEEDLINGS; PLANT growth
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2009, Vol 20, Issue 2, p235
- ISSN
1001-9332
- Publication type
Article