摘要
以混沌理论为基础,对江苏省粮食单产时间序列用分形的方法进行了初步研究,从吸引子维数、Kolomogorov熵等方面分析了粮食单产变化的混沌性质。研究结果表明,江苏省1978-1997年粮食单产的时序分布具有分形特征,且单产的变化是一个确定性的低维混沌吸引子。要恰当地描述江苏省粮食单产发生系统,需要构造包含12个状态变量的动力学系统。
Abstract
Based on the theory of chaos, preliminary research has been made on the food production series by the method of fractal dimension.Magnet dimension and Kolomogorov entropy of the series are analyzed and its fractal characteristic is proved.The results show that the change of the series is a concrete low-dimension chaotic magnet and to describe reliably the dynamic system of food production, 12 variables is needed.
关键词
粮食单产 /
分形 /
吸引子 /
Kolomogorov熵
Key words
food production /
fractal theory /
magnet dimension /
Kolomogorov entropy
徐梦洁, 彭补拙.
江苏省粮食产量吸引子维数研究[J]. 人文地理. 2001, 16(3): 53-56 https://doi.org/10.13959/j.issn.1003-2398.2001.03.012
XU Meng-jie, PENG Bu-zhuo.
A STUDY ON THE MAGNET DIMENSION OF FOOD PRODUCTION IN JIANGSU PROVINCE[J]. HUMAN GEOGRAPHY. 2001, 16(3): 53-56 https://doi.org/10.13959/j.issn.1003-2398.2001.03.012
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基金
本研究受国土资源部2000年重点基金项目"长江三角洲地区耕地总量动态平衡与土地可持续利用研究"资助
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