欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2003, Vol. ›› Issue (1): 63-65.

• 研究简报 • 上一篇    下一篇

两性具有不同出生率和死亡率的种群动态

刘汉武   

  1. 河北科技大学理学院, 石家庄 050018
  • 收稿日期:2001-07-09 修回日期:2001-12-03 出版日期:2003-01-10

Population dynamics of different sex with different birth rate and death rate

LIU Hanwu   

  1. Science College, Hebei University of Science & Technology, Shijiazhuang 050018, China
  • Received:2001-07-09 Revised:2001-12-03 Online:2003-01-10

摘要: 以往的种群动力学模型均隐含假设性比为1∶1,而实际上并非总如此,不同性别的出生和死亡是不完全相同的。文中就考虑了两性具有不同出生率和死亡率的种群动态问题。可以知道种群动态只是受雌性控制,与雄性无关。

关键词: 灌木, “肥岛”, 土壤资源, 空间异质性, 土地荒漠化, 干旱、半干旱区

Abstract: Formerly, in the population dynamics models, it is assumed that the sex ratio is 1∶1, which is not always so in reality. The birth and death rates of different sex are different. In this paper, the population dynamics of different sex with different birth rate and death rate is studied. It suggest that the spreading process of one population is controlled by the female, and has no relation with the male.

Key words: Shrub, Fertile islands, Spatial heterogeneity, Soil resources, Land desertification, Arid and semi arid regions

中图分类号: