深圳坝光银叶树种群生命表及生存力分析  

Life Table and Survival Analysis of Heritiera littoralis Population in Baguang, Shenzhen

作　　者：孙红斌 肖石红 蔡坚[2] 高常军[2] 易小青[2] 吴琰[2] 魏龙[2] 王佐霖 SUN Hongbin;XIAO Shihong;CAI Jian;GAO Changjun;YI Xiaoqing;WU Yan;WEI Long;WANG Zuolin(Shenzhen Wildlife Rescue Center,Shenzhen,Guangdong 518040,China;Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou,Guangdong 510520,China)

机构地区：[1]广东省深圳市野生动物救护中心,广东深圳518040 [2]广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东广州510520

出　　处：《热带作物学报》2019年第11期2160-2165,共6页Chinese Journal of Tropical Crops

基　　金：广东省林业科技创新项目(No.2017KJCX038);深圳市野生动物救护中心项目“坝光银叶树湿地园监测”

摘　　要：以种群生命表和生存力分析理论为基础,应用径级法及匀滑技术,编制深圳坝光古银叶树(Heritiera littoralis)种群特定时间生命表,绘制其死亡率曲线、消失率曲线、存活曲线和生存率函数曲线,同时分析种群数量动态变化。结果表明:(1)坝光银叶树种群以幼苗和幼树个体数量居多,老龄个体数量较少,表明现阶段银叶树整体为增长型种群,考虑未来潜在干扰影响时种群仍处于稳定状态;(2)银叶树种群存活曲线趋于Deevey-Ⅲ型,死亡率和消失率均在第Ⅰ龄级和第Ⅲ龄级出现2个峰值,曲线的变化趋势基本一致;(3)种群生存分析结果显示,生存率函数曲线呈单调上升趋势,累计死亡率函数曲线单调下降,且前期上升或下降的幅度高于后期,种群死亡密度函数曲线较为平缓,危险率函数从第Ⅲ到第Ⅻ龄级随龄级的增大不断增大,死亡密度和危险率函数在第Ⅱ龄级最大。The specific life table of Heritiera littoralis population in Baguang,Shenzhen was compiled based on the population life table and the survival analysis using the DBH(diameter at breast height)class method and smoothing out technique.The mortality rate curve,vanishing rate curve,survival rate curve and survival function curve were calculated,and the population dynamics were also analyzed.In H.littoralis population,the seedlings and young trees were in larger quantity,while the aged ones were fewer,indicating that the population was overall a growing population.The population was stable even taking potential future disturbance into account.The survival curve was more of Deevey-Ⅲtype.The mortality and vanishing curves both exhibited the same trend,existing two peaks in the lifespan.One was in the 1st age and the other was in the 3rd.Analysis of four survival functions of H.littoralis population showed that the survival function curve increased all long,while the cumulative mortality function curve decreased all the time.The increasing or decreasing range was higher at young stage than that at middle or mature stages.The death density function curve was relatively stable.The hazard rate function curve was increasing from the 3rd age to the 12th age,with the growth of age class.The death density and hazard rate function curves were highest during the 2nd age class.

关 键 词：银叶树 种群生命表 种群动态 存活曲线 生存分析 

分 类 号：S718.5[农业科学—林学]