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苏南丘陵山区典型次生森林群落的点格局分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2016年02期
Page:
107-112
Column:
研究论文
publishdate:
2016-03-30

Article Info:/Info

Title:
Point pattern analyses on typical secondary forest communities in the mountainous region of southern Jiangsu Province
Article ID:
1000-2006(2016)02-0107-06
Author(s):
XUE Cen1LIU Maosong1*KANG Xin1ZHENG Abao2HOU Changying2GUAN Qingwei3XU Chi1
1. School of Life Sciences, Nanjing University, Nanjing 210046, China;
2. Jiangsu Province Forestry Administration, Nanjing 210036, China;
3. College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
Keywords:
secondary forest community structure succession spatial pattern inter specific association northern subtropics
Classification number :
S718.5
DOI:
10.3969/j.issn.1000-2006.2016.02.018
Document Code:
A
Abstract:
To explore spatial structure of secondary forest communities at different succession series in the hilly area of northern subtropical China, we set up 36 sampling plots in the Lishui Foresty Farm, Jiangsu Province, and conducted detailed field investigations on the woody plants in these plots. We distinguished four typical community types using canonical correlation analysis(CCA)across our study plots, and then used point pattern analysis to characterize the spatial distribution patterns of the main tree species for these community types. Our results suggested that in the study area typical forest communities were represented as Pinus massoniana-Quercus acutissima community, Ilex chinensis-P. massoniana community, Q. acutissima-Q. variabilis community and Cunninghamia lanceolata-Vernicia fordii community. Soil conditions appeared to be the primary factor resulting in the difference of community composition. Most dominant tree species in the study communities showed uniform patterns on the scale of >3 m, suggesting that intraspecific competition underlies such pattern formation. Interspecific spatial association often manifested neutral patterns, except for those species such as Q. acutissima and Q. variabilis, which presented significant negative correlations. Interspecific competition due to similar functional traits of these tree species was a likely driving mechanism of such association. Our study could provide a useful reference to effective management of secondary forests in northern subtropical China.

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Last Update: 2016-04-01