南京林业大学学报（自然科学版）2017，Vol.41Issue(3)：71-76,6.DOI:10.3969/j.issn.1000-2006.201604046
广西雅长林区铁坚油杉种群结构分布研究
Ecological study of Keteleeria davidiana populations of Yachang forest farm in Guangxi Zhuang Autonomous Region
摘要
Abstract
[Objective] A comprehensive understanding of the trends of the Keteleeria davidiana populations in its natural forest of the Guangxi Yachang Forest Farm could provide a basis for its protection,recovery,and utilization in the northwest area of Guangxi.[Methods] Four representative plots in the forest were selected and assessed using mathematics statistics.The differences in the dynamic changes in K.davidiana populations were analyzed with respect to different plot conditions and the size class,spatial distribution pattern,and regeneration of the trees.[Result] The size class structures of the four plots were incomplete and were missing different sizes.The size class structures of the four plots were different,they were recession,growth,mature,and stable types.K.davidiana pure forest had a clustered distribution,whereas K.davidiana mixed forest had a uniform distribution.However,the spatial distribution pattern of K.davidiana populations varied in the 2 m × 2 m and 4 m × 4 m grid scale,K.davidiana pure forest changed from a uniform distribution to a clustered distribution,and K.davidiana mixed forest changed from a clustered distribution to a uniform distribution.The regeneration of K.davidiana populations relied on seed breeding followed by sprouting reproduction.[Conclusion] The dynamic changes of the size class,spatial distribution pattern,and regeneration of K.davidiana populations in the Guangxi Yachang Forest Farm are affected by the community structure and the canopy density.Considering the circumstances is required in determining effective measures for the protection,recovery,and utilization of K.davidiana populations.关键词
铁坚油杉/大小级结构/空间分布格局/种群更新Key words
Keteleeria davidiana/size class structure/spatial distribution pattern/populations regeneration分类
农业科技引用本文复制引用
白卫国,徐惠玲,吴庆标,李铁华,李加博,廖国勇..广西雅长林区铁坚油杉种群结构分布研究[J].南京林业大学学报（自然科学版）,2017,41(3):71-76,6.基金项目
广西林业科技项目(桂林科字[2014]第22号) （桂林科字[2014]第22号）
