文献类型：期刊文献

英文题名：Effects of Competition on the Vertical Distribution of Foliage Biomass within the Crowns of Planted Korean Pine Trees in Northeast China

作者：Gao, Huilin[1] Feng, Jian[2] Chen, Dongsheng[3] Hou, Yimei[4] Sun, Yunxia[2] Dong, Guijun[5]

第一作者：Gao, Huilin

通信作者：Feng, J[1]

机构：[1]Shenyang Agr Univ, Coll Forestry, Shenyang 110866, Peoples R China;[2]Liaoning Acad Forestry Sci, Shenyang 110032, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat,State Forestry &, Beijing 100091, Peoples R China;[4]Jianshi Inst Forestry Sci, Enshi 445300, Peoples R China;[5]Xingan Forestry & Grassland Protect Ctr, Wulanhaote 137400, Peoples R China

年份：2023

卷号：14

期号：5

外文期刊名：FORESTS

收录：;EI(收录号：20232314187508);Scopus(收录号：2-s2.0-85160694252);WOS:【SCI-EXPANDED(收录号:WOS:000997718600001)】；

基金：This study was financed by National Key Research and Development Program of China (2022YFD2201800-02), the start-up funds for postdoctoral research from Shenyang Agricultural University (770221030), and the start-up funds for postdoctoral research from Shenyang Agricultural University (X2021036). The authors are grateful to the students who contributed to our field investigation.

语种：英文

外文关键词：foliage biomass; annual shoot; neighbor competition; Northeast China; Korean pine

摘要：The characteristics and distribution of foliage biomass are important aspects of the crown structures of trees. In this study, we developed a foliage biomass distribution model at the branch level and annual shoot level (i.e., all branches on an annual increment of the main tree bole) using a sample of 51 Korean pine trees that were destructively sampled in Liaoning Province, northeast China. A variety of independent variables, including branches, trees, and forest competition, were used as explanatory variables in the model development. Our results indicated that foliage biomass at the branch level increased with an increasing relative distance from the tree tip into the crown. The peak of the foliage biomass distribution shifted to the tree tip with increasing tree age. A power function, including branch diameter and competition variables, showed excellent performance in modeling branch foliage at the branch level. The final model, which included branch diameter, competition variables, and relative distance to branch base for the relative foliage density, showed best performance. The trees that showed advantageous growth ability also had a larger amount of foliage biomass.