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应用生态学报 ›› 1992, Vol. 3 ›› Issue (2): 169-172.

• 研究论文 • 上一篇    下一篇

连续性空间分布型模型与应用研究

张文军, 商鸿生   

  1. 西北农业大学, 咸阳 712100
  • 收稿日期:1990-09-10 出版日期:1992-04-25 发布日期:1992-04-25

Continuous spatial distribution models of biological population and their application

Zhang Wenjun, Shang Hongsheng   

  1. Northwestern Agricultural University, Xianyang 712100
  • Received:1990-09-10 Online:1992-04-25 Published:1992-04-25

摘要: 本文对Pearson-Ⅲ分布与指数分布的空间分布型特征进行了探讨,发现它们的精确性高于经典的频次分布。导出Pearson-Ⅲ分布与指数分布的空间分布型判定指标和抽样量公式,并对赤霉病菌源的分布型和抽样量进行分析,最后指出连续性空间分布型模型的优越性。

关键词: 空间格局, Pearson-Ⅲ型, 指数分布, 赤霉病

Abstract: This paper deals with the spatial pattern indices for biological population based on Pearson's Ⅲ type distribution and exponential distrbution. The results show that their precision is higher than that of classical frequency distributions. The judging indices of aggregation and formula for required number of sampling in the case of Pearson-Ⅲ distribution and exponential distribution are presented and successfully used in analysis of the spatial pattern and sampling number for inoculum source of wheat scab. Finally, advantages of the continuous models in application to spatial pattern are discussed.

Key words: Pearson-Ⅲ type, Exponential distribution, Spatial pattern, Wheat scab