文献类型：期刊文献

英文题名：Selection priority for harvested trees according to stand structural indices

作者：Li, Yuanfa[1] Hui, Gangying[2] Wang, Hongxiang[2] Zhang, Gongqiao[2] Ye, Shaoming[1]

第一作者：Li, Yuanfa

通信作者：Ye, SM[1]

机构：[1]Guangxi Univ, Coll Forestry, Daxue East Rd 100, Nanning 530004, Guangxi Provinc, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, State Forestry Adm, Key Lab Tree Breeding & Cultivat, Box 1958, Beijing 100091, Peoples R China

年份：2017

卷号：10

期号：3

起止页码：561-566

外文期刊名：IFOREST-BIOGEOSCIENCES AND FORESTRY

收录：;Scopus(收录号：2-s2.0-85019597281);WOS:【SCI-EXPANDED(收录号:WOS:000400940000005)】；

基金：This paper was financially supported by National Sci-Tech Support Plan of China (2012BAD22B03) and National Science Foundation of China (No. 31400542). Hong-xiang Wang and Gongqiao Zhang carried out the field measurements, Shaoming Ye performed the statistical analysis, Gangying Hui conceived the study and helped to draft the manuscript, Yuanfa Li wrote and finished the manuscript.

语种：英文

外文关键词：Dominance Index; Mingling Index; Thinning; SBFM; Silviculture; Uneven-aged Forest; Uniform Angle Index

摘要：The selection of trees to be harvested is a core tenet of uneven-aged forest management; however, few studies have focused on the process of tree selection. A set of stand structural parameters (uniform angle index, W; mingling index, M; dominance index, U) based on tree neighbor-spatial relationships, are particularly suitable for expressing the structural characteristics of forest stands. Such indices were used to parameterize thinning in three plots (a-c, each 100 x 100 m(2)) in a Korean pine broad-leaved forest in northeastern China and one plot (h, 70 x 70 m(2)) in a pine-oak mixed forest in northwest China. Low-intensity single-tree selection was applied according to the principles of structure-based forest management (SBFM), i.e., to promote high mixture, obvious size differentiation, and random pattern with the aim of improving the overall structure of the managed plots. A group of thinning priority indices (v_ ij, k_ ij and z_ ij) were calculated according to the bivariate distributions of the structural characteristics of harvested trees and stands before harvest. Our results demonstrated that v_ ij, k_ ij and z_ ij adequately describe the spatial relationship between each tree and its nearest neighbors, and their combinations can be efficiently used to set thinning priorities on harvested trees with different structural characteristics. Their application can reduce the subjectivity of the selection process and improve the speed and accuracy of the choice of trees to be harvested in uneven-aged mixed forests.