Effects of size, neighbors, and site condition on tree growth in a subtropical evergreen and deciduous broad-leaved mixed forest, China

Ecology and Evolution
Xiulian ChiJingyun Fang

Abstract

Successful growth of a tree is the result of combined effects of biotic and abiotic factors. It is important to understand how biotic and abiotic factors affect changes in forest structure and dynamics under environmental fluctuations. In this study, we explored the effects of initial size [diameter at breast height (DBH)], neighborhood competition, and site condition on tree growth, based on a 3-year monitoring of tree growth rate in a permanent plot (120 × 80 m) of montane Fagus engleriana-Cyclobalanopsis multiervis mixed forest on Mt. Shennongjia, China. We measured DBH increments every 6 months from October 2011 to October 2014 by field-made dendrometers and calculated the mean annual growth rate over the 3 years for each individual tree. We also measured and calculated twelve soil properties and five topographic variables for 384 grids of 5 × 5 m. We defined two distance-dependent neighborhood competition indices with and without considerations of phylogenetic relatedness between trees and tested for significant differences in growth rates among functional groups. On average, trees in this mixed montane forest grew 0.07 cm year-1 in DBH. Deciduous, canopy, and early-successional species grew faster than evergreen, small-st...Continue Reading

References

Oct 25, 2001·Proceedings. Biological Sciences·N WikströmM W Chase
May 15, 2007·Ecology Letters·Kenneth J FeeleyStuart J Davies
Apr 4, 2009·Ecology·Pierre LegendreFangliang He
Mar 31, 2010·Ecological Applications : a Publication of the Ecological Society of America·Peter M VitousekOliver A Chadwick

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Citations

Jun 3, 2021··Nandan ShettyAidan K. Puzzio

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BETA
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lmerTest
Gamma Design
MuMIn
simba
Phylomatic
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