植物生态学报 ›› 2002, Vol. 26 ›› Issue (4): 403-407.

• 论文 • 上一篇    下一篇

长苞铁杉种群个体年龄与胸径的多维时间序列模型研究

吴承祯,洪伟   

  • 发布日期:2002-04-10
  • 通讯作者: 吴承祯

A Proposed Multidimensional Time Series Model of Individual Age and Diameter in Tsuga longibracteata

WU Cheng-Zhen and HONG Wei   

  • Published:2002-04-10
  • Contact: WU Cheng-Zhen

摘要: 利用多维时间序列分析方法,建立长苞铁杉(Tsuga longibracteata)种群胸径生长的多维时间序列模型,即Yt=1.7870785Yt-1-0.8950167Yt-2+0.4509997Ut-0.8036035Ut-1+0.3950577Ut-2,其中Yt、Yt-1、Yt-2分别为t年、t-5年、t-10年长苞铁杉胸径值(cm),Ut、Ut-1、Ut-2分别为t年、t-5年、t-10年长苞铁杉种群个体年龄(a),模型相关系数为0.9998。以年轮确定种群个体年龄法与多维时间序列模型相结合,建立能

Abstract: Determining individual ages of endangered plants is the purpose of studying its age structure and population dynamics. There are three main methods of determining individual age, but all have their shortcomings, such as low precision, worse serviceability