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林业科学 ›› 2002, Vol. 38 ›› Issue (3): 63-66.doi: 10.11707/j.1001-7488.20020312

• 论文及研究报告 • 上一篇    下一篇

羊草草原弃耕地恢复性演替过程的数学模型和计算机模拟

刘家冈 张学培 刘宁 张立 王本楠   

  1. 北京林业大学,北京100083;中国科学院环境与生态研究中心,北京10008
  • 收稿日期:2001-02-28 修回日期:1900-01-01 出版日期:2002-05-25 发布日期:2002-05-25

A MATHEMATICAL MODEL AND A COMPUTER SIMULATION OF SUCCESSION PROCESS OF LEYMUS CHINENSIS MICROCOMMUNITIES IN ABANDONED FIELD

Liu Jiagang,Zhang Xuepei,Liu Ning,Zhang Li,Wang Bennan   

  1. Beijing Forestry University Beijing100083;Research Center for Eco environment Sciences, Chinese Academy of Sciences Beijing100085
  • Received:2001-02-28 Revised:1900-01-01 Online:2002-05-25 Published:2002-05-25

摘要:

本文在王振堂(1985)工作的基础上,把羊草的重新侵入看作是一个逐步的过程。以此为基础提出了它的数学模型,模型的解析形式,并进行了计算机模拟。结果与实验数据十分相符。

关键词: 羊草, 小群落, 恢复性演替, 数学模型, 退耕还草, 防止荒漠化

Abstract:

A mathematical model and a computer simulation of succession process of Leymus chinensis microcommunities in abandoned field were presented. The results accord with data very well. The mathematical model isY(t)=1-e -πV 2N3t 3 Where Y(t) is area occupied by microcommunities of Leymus chinensis, V the expansion speed of Leymus chinensis microcommunities, N the number of seed which invade the abandoned field in unit time and unit area.

Key words: Leymus chinisis, Microcommunity, Restorationsuccession, Mathematical model, Prevent desertization