文献类型：期刊文献

英文题名：Structural and Successional Dynamics of Old-Growth Mixed Oak Forests in the West Qinling Mountains

作者：Lian, Qi[1] Sa, Rina[1] Liu, Wenzhen[2] Zhao, Zhonghua[1]

第一作者：Lian, Qi

通信作者：Zhao, ZH[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Natl Forestry & Grassland Adm, Key Lab Tree Breeding & Cultivat,State Key Lab Eff, Beijing 100091, Peoples R China;[2]Xiaolongshan Res Inst Forestry Gansu Prov, Key Lab Secondary Forest Cultivat Gansu Prov, Tianshui 741020, Peoples R China

年份：2024

卷号：15

期号：5

外文期刊名：FORESTS

收录：;EI(收录号：20242216181514);Scopus(收录号：2-s2.0-85194372010);WOS:【SCI-EXPANDED(收录号:WOS:001232331400001)】；

基金：We are grateful to Xiaolong Shi, Anmin Li, Xiaolong Guo, Peng Wang, Shenmin Yu and other colleagues who participated in the field survey.

语种：英文

外文关键词：stand succession; diameter distribution; mortality; recruitment; Quercus aliena var. acuteserrata; natural forests

摘要：Understanding the composition and structure of forest trees is crucial to comprehending the properties and functions of forests. It also helps in implementing effective management strategies for sustainable resource utilization. Our study analyzed the structural dynamics of the old-growth mixed oak forests in the Xiaolongshan Forest region, focusing on three long-term monitoring plots (A, B, C). We examined the tree species composition, diameter distribution, mortality, and recruitment dynamics of different successional species groups, as well as the spatial distribution patterns of living and dead trees, with surveys conducted every five years. The findings indicate: (1) Plot A experienced a decline in stand density and species diversity during the survey period, with the Importance Value Index (IVI) of pioneer successional species continually decreasing in plots B and C. (2) The tree diameter distribution structure in plot A significantly differed from other plots, showing notable change between 2007 and 2012. (3) All plots exhibited lower, well-balanced community-level demographic parameters based on stem number, but a higher recruitment rate for later successional species groups based on basal area. (4) Dead individuals in plot A had a slight clustering distribution, while the other plots showed a random distribution. We conclude that the individual growth rate significantly impacts the dynamics of the natural Quercus aliena var. acuteserrata forest, with pioneer species groups being gradually replaced by early or late-successional species groups in the succession process.