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生态学杂志 ›› 2011, Vol. 30 ›› Issue (01): 53-58.

• 研究报告 • 上一篇    下一篇

天目山自然保护区银杏天然种群生命表

李 玲1,张光富1**,王 锐1,孙 国1,赵明水2   

  1. 1南京师范大学生命科学学院, 江苏省生物多样性与生物技术重点实验室,南京 210046;2浙江天目山国家级自然保护区管理局,浙江临安 311311
  • 出版日期:2011-01-08 发布日期:2011-01-08

Life table of natural Ginkgo biloba population in Tianmu Mountain Nature Reserve.

LI Ling1, ZHANG Guang-fu1**, WANG Rui1, SUN Guo1, ZHAO Ming-shui2   

  1. 1Jiangsu Key Laboratory of Biodiversity and Biotechnology, School of Life Sciences, Nanjing Normal University, Nanjing 210046, China|2Management Bureau of Tianmu Mountain Nature Reserve, Lin’an 311311, Zhejiang, China
  • Online:2011-01-08 Published:2011-01-08

摘要: 以种群生命表和生存分析理论为基础,采用空间代替时间法和分段匀滑技术,编制浙江天目山自然保护区银杏天然种群特定时间生命表,绘制其死亡率曲线、消失率曲线、存活曲线和生存函数曲线,分析种群数量动态变化。结果表明:银杏种群结构存在波动性,趋于DeeveyⅡ型,其成年阶段的个体较丰富;银杏种群死亡率和消失率曲线变化趋势基本一致,均出现2个高峰,均在第Ⅵ龄级和第Ⅺ龄级阶段出现第一和第二峰值;银杏种群的生存率单调下降,累计死亡率单调上升,生存率下降趋势前期高于后期,累计死亡率则相反;由生存函数曲线看出,天目山银杏种群具有前期薄弱、中期稳定和后期衰退的特点。

关键词: 沉积物, 营养盐, 东海, 再生

Abstract: Based on the population life table and the theory of survival analysis, the static life table of Ginkgo biloba population in Tianmu Mountain Nature Reserve of Zhejiang Province was compiled by applying the age class structure represented by DBH class and the smoothing out technique. The mortality rate curve, killing power curve, survival rate curve, and survival function curve were also analyzed to reveal the population’s quantitative dynamics. There was a fluctuation in the structure of G. biloba population. The survival curve of the population tended to the type of Deevey Ⅱ, and the individuals at adult stage were abundant. The mortality rate curve and killing power curve in the lifespan had similar variation trend, all with the peaks in 6th and 11th age class periods. The survival rate of the population decreased monotonically, whereas the cumulative mortality rate was in adverse. The survival functional curve showed that the G. biloba population grew poorly in early age period and stably in middle age period, but declined in old age period.

Key words: Sediment, Nutrient, East China Sea, Regeneration