Coarse woody debris features of a warm temperate deciduous broad-leaved forest,northern China  

作　　者：Fang Ma Liwen Zhuang Shunzhong Wang Weiguo Sang 

机构地区：[1]Minzu University of China,No.27,Zhongguancun Nandajie,Haidian District,Beijing 100081,People’s Republic of China [2]Heilongjiang Academy of Forestry Science,No 134 Haping Road,Nangang District,Harbin 150081,People’s Republic of China [3]Key Lab of Environment and Vegetation Change,Institute of Botany,Chinese Academy of Sciences,No.20 Xiangshan Nanxincun,Haidian District,Beijing 100093,People’s Republic of China

出　　处：《Journal of Forestry Research》2021年第3期1105-1114,共10页林业研究（英文版）

基　　金：supported by The National Science Foundation of China(31770567,31570630)。

摘　　要：Stocking and structural composition of a deciduous broad-leaved forest were determined to predict coarse woody debris quantity by quantifying the empirical relationships between these two attributes.The most ecologically significant families by stem density were Salicaceae,Betulaceae,Fagaceae,and Aceraceae.P opulus davidiana was the most dominant species followed by B etula dahurica,Quercus mongolica,and Acer mono.The four species accounted for 69.5%of total stems.Numerous small-diameter species characterized the coarse woody debris showing a reversed J-shaped distribution.The coarse debris of P.davidiana,B.dahurica,and Q.mongolica mainly comprised the 10–20 cm size class,whereas A.mono debris was mainly in the 5–10 cm size class.The spatial patterns of different size classes of coarse woody debris were analyzed using the g-function to determine the size of the tree at its death.The results indicate that the spatial patterns at the 0–50 m scale shifted gradually from an aggregated to a random pattern.For some species,the larger coarse debris might change from an aggregated to a random distribution more easily.Given the importance of coarse woody debris in forest ecosystems,its composition and patterns can improve understanding of community structure and dynamics.The aggregation pattern might be due to density dependence and self-thinning effects,as well as by succession and mortality.The four dominant species across the different size classes showed distinct aggregated distribution features at different spatial scales.This suggests a correlation between the dominant species population,size class,and aggregated distribution of coarse woody debris.

关 键 词：Tree mortality DIVERSITY Size class Forest dynamic plot 

分 类 号：S718.5[农业科学—林学]