文献类型：期刊文献

英文题名：Relationships between stand growth and structural diversity in spruce-dominated forests in New Brunswick, Canada

作者：Lei, Xiangdong[1,2] Wang, Weifeng[1] Peng, Changhui[1]

第一作者：Lei, Xiangdong;雷相东

通信作者：Peng, CH[1]

机构：[1]Univ Quebec, Dept Sci Biol, Inst Environm Sci, Montreal, PQ H3C 3P8, Canada;[2]Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China

年份：2009

卷号：39

期号：10

起止页码：1835-1847

外文期刊名：CANADIAN JOURNAL OF FOREST RESEARCH

收录：;EI(收录号：20094412408304);Scopus(收录号：2-s2.0-70350142938);WOS:【SCI-EXPANDED(收录号:WOS:000271076100005)】；

基金：This study was supported in part by ForValueNet, the Natural Sciences and Engineering Research Council of Canada (NSERC) Strategic Network, and NSERC strategic and discovery grants. We thank the associate editor and two anonymous reviewers for their constructively critical comments that have helped improve the manuscript and Mr. Brian Doonan for his English editing contribution. Special thanks to Mr. Dale Wilson of the New Brunswick Department of Natural Resources for providing the New Brunswick permanent sample plot data used for this study.

语种：英文

外文关键词：Biodiversity

摘要：Relationships between stand growth and structural diversity were examined in spruce-dominated forests in New Brunswick, Canada. Net growth, survivor growth, mortality, and recruitment represented stand growth, and tree species, size, and height diversity indices were used to describe structural diversity. Mixed-effects second-order polynomial regressions were employed for statistical analysis. Results showed stand structural diversity had a significant positive effect on net growth and survivor growth by volume but not on mortality and recruitment. Among the tested diversity indices, the integrated diversity of tree species and height contributed most to stand net growth and survivor growth. Structural diversity showed increasing trends throughout the developmental stages from young, immature, mature, and overmature forest stands. This relationship between stand growth and structural diversity may be due to stands featuring high structural diversity that enhances niche complementarities of resource use because trees exist within different horizontal and vertical layers, and strong competition resulted from size differences among trees. It is recommended to include effects of species and structural diversity in forest growth modeling initiatives. Moreover, uneven-aged stand management in conjunction with selective or partial cutting to maintain high structural diversity is also recommended to maintain biodiversity and rapid growth in spruce-dominated forests.