生物灾害科学2023，Vol.46Issue(4)：500-509,10.DOI:10.3969/j.issn.2095-3704.2023.04.75
江西齐云山长苞铁杉种群特征与种间联结研究
Population Characteristics and Interspecific Association of Nothotsuga longibracteata in Qiyunshan Mountain of Jiangxi Province
摘要
Abstract
[Objective]This study was conducted to explore the population characteristics and interspecific association of Nothotsuga longibracteata in Qiyunshan National Nature Reserve of Jiangxi Province,so as to provide scientific basis for the monitoring and protection of rare and relict plants there.[Method]According to the results of preliminary investigation,concentrated distribution areas of Nothotsuga longibracteata was selected in Qiyunshan National Nature Reserve of Jiangxi Province,and 15 fixed plots of 40 m×40 m Nothotsuga longibracteata community were established to analyze the population and interspecific association of Nothotsuga longibracteata.[Result](1)The number of Nothotsuga longibracteata individuals decreased with the increase of age class,and the age structure was a kind of'pyramid'type;(2)There were three death peaks of Nothotsuga longibracteata in Ⅱ,Ⅶ and Ⅻ age classes;(3)The dominant tree species of Nothotsuga longibracteata community were significantly positively correlated.Nothotsuga longibracteata was significantly positively correlated with Cunninghamia lanceolata,and significantly negatively correlated with Exbucklandia tonkinensis and Stewartia crassifolia.[Conclusion]The Nothotsuga longibracteata population in the protection area of Qiyunshan Mountain showed an increasing trend,but the population survival pressure is large.Corresponding intervention measures should be taken in advance to prevent the future population decline.There is a significant positive correlation between the main species of Nothotsuga longibracteata community.In the process of protection,it is necessary to pay attention to the species negatively correlated with Nothotsuga longibracteata,and appropriate human intervention can be carried out to prevent the excessive growth of these species from causing difficulties in the natural regeneration of Nothotsuga longibracteata.关键词
齐云山保护区/长苞铁杉/孑遗植物/种群特征/种间联结Key words
Qiyunshan National Nature Reserve/Nothotsuga longibracteata/relict plant/population characteristics/interspecific association分类
农业科技引用本文复制引用
汪志培,黄世贵,朱祥龙,卢建,吴治明..江西齐云山长苞铁杉种群特征与种间联结研究[J].生物灾害科学,2023,46(4):500-509,10.基金项目
中央财政林业国家级自然保护区补助资金项目(2020) （2020）
