摘要
结合长沙市2005—2012年土地利用数据,通过信息熵理论和分形维数理论,对长沙市土地利用结构变化从整体性、时序性、空间性、地类差异性4方面进行全面分析.结果表明:(1)利用信息熵理论对长沙市整体性进行分析,从时序角度将信息熵变化分成2005—2008年上升,2008—2009年下降,2009—2012年上升3个阶段;从空间角度将各区县(市)分成高熵值区、中熵值区、低熵值区.(2)利用分形维数理论对长沙市地类差异性进行分析,随着区域内土地利用发生变化,则表现出相同年份下不同土地利用类型的复杂度变化,不同年份下相同土地利用类型的复杂度也不尽相同.
Combining with the land use data from 2005 to 2012 in Changsha and the theory of information en-tropy and fractal dimension , a comprehensive analysis of land use structure change has been conducted from the perspective of integrity , temporality , spatiality , and differences of the land use types .The results showed that anal-ysis of the integrity by using the information entropy theory divided the entropy changes into rising during 2005-2008 , falling during 2008-2009 and rising during 2009-2012 from the perspective of time sequence; districts, counties and cities are divided into areas with high , middle and low entropy value respectively from the perspective of spatiality .The differences analysis of the land use types indicated the complexities change of different land use types in the same year .The complexities of the same land use types in different years are also various .
出处
《湖南师范大学自然科学学报》
CAS
北大核心
2014年第4期1-5,15,共6页
Journal of Natural Science of Hunan Normal University
基金
国家科技支撑计划资助项目-地理国情监测应用服务(12BAH28B04)
国家自然科学基金资助项目(41001046)
关键词
土地利用结构
信息熵
分形维数
长沙市
land use structure
information entropy
fractal dimension
Changsha city
