摘要
依据信息熵原理提出了耕地空间结构信息熵的概念;以江苏省黄河故道区17个县市为研究对象,探讨了耕地空间结构信息熵的时空变化,认为耕地空间结构信息熵值的大小与研究单元划分的多少密切相关;耕地空间结构信息熵值的时间演变与研究单元耕地面积的动态变化密切相关;耕地的空间分布近似于等概率分布,其近似程度的大小与耕地面积空间分布的均衡性密切相关。
Based on the theory of information entropy, information entropy of cultivated land spatial structure （IECLSS） is put forward ; takes 17 counties near the course of the ancient Yellow River in Jiangsu province as research plots. Variations and spatial differentiations of IECLSS is focused on. The results are：（1） The value of IECLSS is closely related with the number of research units divided;（2）The variations of IECLSS＇ value are closely related with the variations of cultivated land area of research units;（3）The probability of cultivated land spatial resolution obeys to uniform probability distribution approximatively, the approximation is closely related with the spatial resolution of cultivated land.
出处
《国土与自然资源研究》
2006年第1期27-28,共2页
Territory & Natural Resources Study
基金
全国优秀博士论文基金(200044)
徐州师范大学基金(04XLB25)
关键词
耕地
空间分布
信息熵
时空变化
cultivated land
spatial resolution
information entropy
variations and spatial differentiations
