• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Asian conference on remote sensing >Characterizing the urban growth from 1975 to 2003 of Hanoi city using remote sensing and a spatial metric
【24h】

Characterizing the urban growth from 1975 to 2003 of Hanoi city using remote sensing and a spatial metric

机译：使用遥感和空间指标从1975年到2003年的城市增长的城市增长

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study explores an approach of combining remote sensing and a spatial metric to characterize land use change in Hanoi, Vietnam. The work is based on the land cover information of 4 different times derived from Landsat and ASTER data from 1975 to 2003. This study adopted the spatial metrics; the percentage of like adjacency (PLADJ), which calculates the number of like adjacencies involving the focal class, divided by the focal number of cell adjacencies involving the focal class, multiplied by 100 to convert to a percentage. The result successfully showed proportions of the fragmented and the aggregated areas in urbanization for each development time. During the rapid urbanization periods in 1975-1984 and 1984-1992, a large proportion of the interior non-developed and aggregated non- developed was converted to developed landscape, whereas fragmented non-developed to developed markedly happened in 2001-2003. The study provided intuitive description and separation of three urbanization patterns such as infill, expansion, and outlying. Quantitative assessment revealed that the proportion of the expansion and infill steadily increased, whereas the proportion of the outlying decreased in past 30 years. The combined approach using remote sensing and a spatial metric is an effective method to improve understanding of urbanization patterns and to provide visualization of spatial-temporal change due to urbanization.
机译：本研究探讨了遥感和空间指标结合遥感的方法，以表征越南河内的土地利用变化。该工作基于1975年至2003年从Landsat和Aster数据源于Landsat和Aster数据的4种不同时间的土地覆盖信息。本研究采用了空间指标;相邻（Pladj）的百分比计算，它计算涉及焦距类的相同邻接的数量，除以涉及焦点类的小区邻接的焦距，乘以100来转换为百分比。结果成功地显示了每个开发时间为城市化的分散和聚集区域的比例。在1975年至1984年和1984年至1992年的快速城市化期间，大部分内部非发达和汇总的非发达国家被转换为发展景观，而分散的非发达国家在2001 - 2003年开发出现显着发生。该研究提供了直观的描述和分离三种城市化模式，如填充，扩张和外围。定量评估表明，稳步增加的扩张和填略的比例，而过去30年的偏远下降的比例下降。使用遥感和空间度量的组合方法是提高城市化模式的理解的有效方法，并提供由于城市化引起的空间变化的可视化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号