基于GIS的兰州市土地利用结构信息熵的空间分异规律及驱动因素分析

Analysis on spatial differentiation law and driving factors of land use structure information entropy in Lanzhou based on GIS

基于Shannon熵理论,对兰州市土地利用结构信息熵的空间分异规律及其驱动因素进行研究。结果表明,兰州市土地利用结构信息熵在空间上表现出自城区向郊区递减的趋势。这符合城市用地结构演变的一般规律:城市规模越大,信息熵值越高,土地职能类型越多,土地构成差别越小;反之亦然。这一规律有利于土地利用结构与布局的优化调整。

Based on the Shannon entropy theory,this paper studies the spatial differentiation law and driving factors of land use structure information entropy in Lanzhou.The results show that the information entropy of land use structure in Lanzhou has a decreasing trend from the urban area to the suburbs.This is in line with the general law of the evolution of urban land use structure:the larger the city size,the higher the information entropy,the more the land function types,the smaller difference in land composition.This law is beneficial to the optimization and adjustment of land use structure and layout.