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。
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.
出处
《应用生态学报》
CAS
CSCD
1992年第2期169-172,共4页
Chinese Journal of Applied Ecology
关键词
分布模型
空间格局
指数分布
Pearson-Ⅲ type, Exponential distribution, Spatial pattern, Wheat scab.
