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本数据集以OpenStreeetMap （简称为OSM）实时更新的公路矢量数据为基础，利用ArcGIS空间分析技术，以“一带一路”监测区——亚洲、欧洲、非洲、澳大利亚为研究区，分别计算了2016年10月公里网格尺度的公路道路网密度
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创建时间：
2018-12-19
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