Strategic noise map 2021 important and additional roads Lden contours

This dataset contains the digital vectorial version of all sub-areas of expropriation plans associated with special plans of construction. In a plan, the area is sometimes divided into sub-areas to jointly analyse or discuss spatially coherent wholes.本数据集收录了所有与建筑专项规划相关的征收计划各子区域的数字矢量版本。在单份规划中，有时会将规划区域划分为若干子区域，以对空间连贯整体开展联合分析与研讨。