地理学报

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景观扩张指数及其在城市扩展分析中的应用

刘小平,  黎夏,  陈逸敏,  秦雁,  李少英,  陈明辉   

  1. 中山大学地理科学与规划学院,广州 510275
  • 收稿日期:2009-01-17 修回日期:2009-07-18 出版日期:2009-12-25 发布日期:2010-03-31
  • 通讯作者: 黎夏, 男, 教授, 从事遥感和地理信息系统研究, 已发表GIS和遥感论文200多篇。 E-mail: lixia@mail.sysu.edu.cn
  • 作者简介:刘小平 (1978-), 男, 湖南邵阳人, 副教授, 中国地理学会会员(S110007282M), 研究方向为遥感和地理信息系统, 已发表论文50多篇, 其中SCI收录18篇。E-mail: yiernanh@163.com
  • 基金资助:

    国家自然科学基金项目(40901187); 国家自然科学基金重点项目 (40830532); 资源与环境信息系统国家重点实验室开放课题 (4106298)

Landscape Expansion Index and Its Applications to Quantitative Analysis of Urban Expansion

LIU Xiaoping,  LI Xia,  CHEN Yimin,  QIN Yan,  LI Shaoying,  CHEN Minghui   

  1. School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2009-01-17 Revised:2009-07-18 Online:2009-12-25 Published:2010-03-31
  • Supported by:

    National Natural Science Foundation of China, No. 40901187; Key National Natural Science Foundation of China, No.40830532; Research Fund of LREIS, CAS, No.4106298

摘要:

景观指数是定量分析景观格局的一种常用手段,但目前大部分景观指数,往往只侧重于对景观斑块或格局的几何特征进行简单分析和描述,忽略了景观格局动态变化过程的信息,缺乏将景观空间分布格局与其变化过程相结合的深入研究。作者提出了一种新的景观指数—景观扩张指数 (Landscape Expansion Index, LEI),与传统的景观指数相比,LEI包涵了景观格局的过程信息,可用来分析两个或多个时相景观格局的动态变化,而传统景观指数则只能反映某一时相景观格局的信息。将景观扩张指数应用于东莞市1988-2006年期间的城市景观扩张过程中,研究结果表明,LEI能够很好的识别城市扩张的三种类型—填充式、边缘式以及飞地式。此外,通过对东莞市城市扩张过程LEI的变化分析,发现东莞市城市扩张规律与城市增长相位理论是相符合的。

关键词: 景观格局, 景观扩张指数, 城市扩张, 遥感, 东莞市

Abstract:

Landscape index is an instrument commonly used for quantitative analysis of landscape pattern. However, most of landscape indices are generally focused on simple analysis and description of the geometric features of a landscape patch or pattern, while neglecting information on dynamic changes of landscape pattern. In this paper a new landscape index, i.e., landscape expansion index (LEI), is proposed. In contrast with conventional landscape indices, LEI contains information of the formation processes of landscape pattern, so it can be used to analyze the dynamic changes of two or more temporal phases of landscape pattern, since conventional landscape indices only reflect information for one certain temporal phase of landscape pattern. Landscape expansion index was applied to studies on the urban landscape expansion of Dongguan City, Guangdong, China for the period of 1988-2006, and the results indicate that LEI can perfectly identify the three types of urban expansion, i.e., infilling type, edge-expansion type and outlying type. Additionally, based on an analysis of the LEI changes in the urban expansion processes of Dongguan City, it was found that the rule governing urban expansion of Dongguan City is consistent with the phases theory on urban growth. This study further demonstrates that LEI can be used effectively for a quantitative analysis of the dynamic changes of landscape pattern, and LEI proves to be significant to the studies on landscape pattern and its dynamic changes.

Key words: landscape pattern, landscape expansion index, urban expansion, remote sensing, Dongguan