甘肃插岗梁省级自然保护区领春木种群结构和动态的研究  

Study on population structure and dynamics of Euptelea pleiospermum in Chagangliang Nature Reserve of Gansu Province

作　　者：闫倩倩 郭星 谢飞 侯亚莉 赵栋 魏海龙 何丽娟 YAN Qianqian;GUO Xing;XIE Fei;HOU Yali;ZHAO Dong;WEI Hailong;HE Lijuan(Bailongjiang Institute of Forestry Science in Gansu Province,Lanzhou 730070,China;Bailongjiang Forest Ecosystem National Positioning Observation and Research Station in Gansu Province,Zhouqu 746300,China)

机构地区：[1]甘肃省白龙江林业科学研究所,甘肃兰州730070 [2]甘肃白龙江森林生态系统国家定位观测研究站,甘肃舟曲746300

出　　处：《林业与生态科学》2024年第3期297-303,共7页Forestry and Ecological Sciences

基　　金：中央财政林业科技推广示范资金项目([2022]ZYTG08);甘肃省林业科技计划项目(2016kj059)。

摘　　要：为了明晰甘肃插岗梁省级自然保护区领春木的种群动态特征,揭示其生存规律,以期为领春木的保护、种群恢复与资源管理提理论支撑,本研究以插岗梁省级自然保护区领春木种群为研究对象,通过野外样方调查法,对分布于插岗梁自然保护区的领春木种群进行种群结构和动态特征进行分析。结果表明,插岗梁领春木种群结构呈金字塔型,集中处于Ⅰ-Ⅴ龄级,总比高达75.69%,种群年龄结构的动态指数V Pi为25.10、V Pi'为1.95,均大于0,领春木种群目前属于增长型。领春木的存活曲线更接近DeeveyⅡ型,表明领春木种群各个年龄的死亡率基本相近。时间序列分析预测,随着时间的推移,老龄个体数量增加,幼龄和中龄个体缺乏补充,种群在未来会面临衰退。The purpose of this study was to clarify the population dynamic characteristics and reveal the survival rules of Euptelea pleiospermum in Chagangliang Nature Reserve,Gansu Province,in order to provide theoretical support for the protection,population recovery and resource management of E.pleiospermum.In this study,the population of E.pleiospermum in Chagangliang Nature Reserve was taken as the research object,the population structure and dynamic characteristics of the E.pleiospermum population distributed were analyzed by field sampling method.The results revealed a pyramidal population structure,predominantly concentrated in age classesⅠtoⅤ,accounting for a total ratio of 75.69%.The dynamic indices V Pi and V Pi′of population age structure were 25.10 and 1.95,both of which were greater than 0 indicating that the population of E.pleiospermum was growing.The survival curve of E.pleiospermum population was closer to that of Deevey II,indicating that the mortality rates were similar at all ages.Time series analysis predicted that the population would decline in the future as the number of older individuals increased over time and the young and middle age individuals lacked a supplement.

关 键 词：插岗梁 领春木 种群结构 存活曲线 数量动态 

分 类 号：S718.5[农业科学—林学]