Recruitment of tree species in mixed selection and irregular shelterwood forest stands

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• 作者：Matija Klopcic (1)
  Andrej Boncina (1)
  
• 关键词：Ingrowth ; Uneven ; aged forests ; Fir–beech–spruce forests ; Natural regeneration ; Saplings ; Binary logistic regression
• 刊名：Annals of Forest Science
• 出版年：2012
• 出版时间：November 2012
• 年：2012
• 卷：69
• 期：8
• 页码：915-925
• 全文大小：400KB
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• 作者单位：Matija Klopcic (1)
  Andrej Boncina (1)
  
  1. Department of Forestry and Renewable Forest Resources, University of Ljubljana, Biotechnical Faculty, Vecna pot 83, 1000, Ljubljana, Slovenia
  

文摘

Context Recruitment is an important process in forest stand dynamics, especially in uneven-aged stands. Continuous recruitment is a prerequisite for diverse, uneven-aged silvicultural systems, but patterns may vary significantly. Aims The main goals of the study were to examine the recruitment of the main tree species in selection and irregular shelterwood stands in silver fir–European beech–Norway spruce forests and to determine the main predictors of the recruitment occurrence. Methods Data from 5,486 permanent inventory plots were used to study recruitment of saplings into the tree layer (diameter at breast height ?0?cm). Results Recruitment rate differed significantly between selection (7.6?trees?ha??year?) and irregular shelterwood (26.1?trees?ha??year?) stands. Shade-tolerant fir and beech recruited with higher probability in selection stands, while light-dependent sycamore recruited with higher probability in irregular stands. In addition, forest types, soil pH, stand basal area, mean diameter, and the basal area of the same tree species with respect to recruitment were found to be important predictors of recruitment occurrence. Conclusions The application of different uneven-aged silvicultural systems and their forms makes it possible to considerably influence the future tree species composition of uneven-aged forests.