USING A FUZZY CLUSTERING METHOD TO ANALYSE THE RELATIONSHIP BETWEEN OSCILLATIONS IN THE POPULATION OF SQUIRREL (Sciurus vulgaris) AND THE PRODUCTION OF PINE(Pinus koraiensis)SEED AND A PREDICTION OF THE SQUIRREL NUMBERS

Abstract

Abstract: The squirrel(Sciums vulgaris) population and the production of pine(Pi-nus koraiensis) seed have been investigated since 1960 in Yichun (Bai Jing Tang, 1981).Data covered the period of i960 to 1980.4 indexes are selected for each year, i.e.(l) population numbers of squirrel in the year before: ( 2 ) population numbers of squirrel 2 years before; (3 ) production of pine seed in the year before; (4 ) production of pine seed 2 years before. 1962-1977 data are a matrix of 4×16 order, A=(a_ij) and it is standardized in column.

Key words: Fuzzy cluster, Gray squirrel, Pine seed, Dynamics, Prediction

摘要： 小哺乳动物年间种群数量波动规律及其食物的影响,是人们早已关注的问题(May,1976;Finerty,1980;Xia Wuping等,1982)。研究这些问题一般使用的数学方法是确定性的非线性常微分方程(nonlinear ordinary differential equation),统计学的自相关分析(autocorrelation analysis)或谱分析(spectral analysis)和快速傅里哀变换(FFT)。

关键词: 模糊聚类, 灰鼠, 松籽, 动态, 预测

ZHOU Li . USING A FUZZY CLUSTERING METHOD TO ANALYSE THE RELATIONSHIP BETWEEN OSCILLATIONS IN THE POPULATION OF SQUIRREL (Sciurus vulgaris) AND THE PRODUCTION OF PINE(Pinus koraiensis)SEED AND A PREDICTION OF THE SQUIRREL NUMBERS[J]. .

周立. 用模糊聚类方法分析灰鼠种群数量年间变化与松籽产量的关系并预报灰鼠种群数量[J]. .

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https://www.mammal.cn/EN/Y1985/V5/I1/41

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USING A FUZZY CLUSTERING METHOD TO ANALYSE THE RELATIONSHIP BETWEEN OSCILLATIONS IN THE POPULATION OF SQUIRREL (Sciurus vulgaris) AND THE PRODUCTION OF PINE(Pinus koraiensis)SEED AND A PREDICTION OF THE SQUIRREL NUMBERS

用模糊聚类方法分析灰鼠种群数量年间变化与松籽产量的关系并预报灰鼠种群数量

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