宁镇扬丘陵区土地利用空间结构的动态演变——以江苏省镇江市为例
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国家自然科学基金项目"煤炭资源型城市产业结构演替与空间形态演化的过程、机理及耦合关系研究"(41171144)


Dynamic Evolution of Sptial Structure of Land Use in Nanjing-Zhenjiang-Yangzhou Hilly Area -A Case Study at Zhenjiang City in Jiangsu Province
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    摘要:

    以镇江市为例,基于其1997-2009年的土地利用现状数据,采用Shannon信息熵和空间洛伦茨曲线,对宁镇扬丘陵区土地利用结构的动态演变及其区域分异规律进行了探讨。结果表明:(1) 1997-2009年镇江市各土地利用类型在空间分布上具有不均衡性,耕地和居民点及工矿用地的分布较为均衡,而牧草地和林地的分布则相对集中;(2) 土地利用结构演变具有阶段性特征,划分为"缓慢增长(1997-2000年)、快速上升(2001-2004年)、稳步发展(2005-2009年)"3阶段,耕地和城镇用地是影响土地利用结构演变的主要类型;(3) 该区土地利用结构演变存在区域分异规律,经济发达的市区及新区的信息熵整体上高于其它区县,且呈现不断下降的趋势,表明该区土地利用结构的有序性逐渐提高,而其它稍欠发达区县的信息熵却呈现出日益上升的态势,表明其土地利用结构的有序性不断降低。

    Abstract:

    Taking the land use data of Zhenjiang City in 1997-2009 as a case study, the land use structure dynamic evolution characteristics and regional differentiation rules of Nanjing-Zhenjiang-Yangzhou hilly area were analyzed and discussed by using Shannon entropy and spatial lorrenze curve. Some conclusions were drawn as follows:(1) From 1997 to 2009, the spatial distribution of different land use types in Zhenjiang City was unbalanced, specially, the distribution of arable land and land for residential areas and mining was more balanced, and the distribution of grassland and woodland was relatively concentrated;(2) Land use structure evolution had periodical characteristics, it can be divided into 3 phases: low speed expansion stage(1997-2000), speed-up expansion stage(2001-2004), steady development stages(2005-2009), the areas of cultivated land and residential and industrial land had significant correlation to the entropy, which could be regarded as the key factors influencing the entropy of land use structure in Zhenjiang City;(3) The land use structure evolution showed regional distribution rules, the urban information entropy was larger than the other counties of Zhenjiang City, and presents the declining trend, it indicated that urban land use structure was in the order of improvement gradually, however, other county revealed a rising trend, it indicated that the order of land use structure was declining.

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张荣天.宁镇扬丘陵区土地利用空间结构的动态演变——以江苏省镇江市为例[J].水土保持通报,2014,(4):255-259,263

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  • 收稿日期:2013-05-04
  • 最后修改日期:2013-08-27
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  • 在线发布日期: 2016-04-05
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