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首页> 外文期刊>International journal of remote sensing >Mapping urban areas on a global scale: which of the eight maps now available is more accurate?
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Mapping urban areas on a global scale: which of the eight maps now available is more accurate?

机译：在全球范围内绘制城市区域地图：现在可用的八张地图中哪一张更准确？

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摘要

Eight groups from government and academia have created 10 global maps that offer a ca 2000 portrait of land in urban use. Our initial investigation found that their estimates of the total amount of urban land differ by as much as an order of magnitude (0.27-3.52 ×10~6 km~2). Since it is not possible for these heterogeneous maps to all represent urban areas accurately, we undertake the first global accuracy assessment of these maps using a two-tiered approach that draws on a stratified random sample of 10 000 high-resolution Google Earth validation sites and 140 medium-resolution Landsat-based city maps. Employing a wide range of accuracy measures at different spatial scales, we conclude that the new MODIS 500 m resolution global urban map has the highest accuracy, followed by a thresholded version of the Global Impervious Surface Area map based on the Night-time Lights and LandScan datasets.
机译：来自政府和学术界的八个小组绘制了10张全球地图，其中提供了大约2000张城市使用土地的照片。我们的初步调查发现，他们对城市土地总面积的估计相差一个数量级（0.27-3.52×10〜6 km〜2）。由于这些异质地图不可能全部准确地代表市区，因此我们采用两层方法对这些地图进行了首次全球准确性评估，该方法采用了1万个高分辨率Google Earth验证站点的分层随机样本， 140张基于Landsat的中分辨率城市地图。通过在不同空间尺度上使用各种精度度量，我们得出结论，新的MODIS 500 m分辨率全球城市地图具有最高的精度，其后是基于夜间灯光和LandScan的全球不渗透表面积地图的阈值版本数据集。

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  • 来源
    《International journal of remote sensing》 |2009年第24期|6531-6558|共28页
  • 作者

    DAVID POTERE; ANNEMARIE SCHNEIDER; SHLOMO ANGEL; DANIEL L. CIVCO;

  • 作者单位

    Office of Population Research, Princeton University, 207 Wallace Hall, Princeton, New Jersey 08544, USA;

    Center for Sustainability and the Global Environment and the Department of Geography, University of Wisconsin-Madison, 1710 University Avenue, Madison, Wisconsin 53726, USA;

    Robert F. Wagner Graduate School of Public Service, New York University, 295 Lafayette Street, New York, New York 10012, USA;

    Department of Natural Resources and the Environment, University of Connecticut, 1376 Storrs Road, Storrs, Connecticut 06269, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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