Airport constraint

<b>Please note:</b> for a correct view and use of this dataset it is advisable to consult it at <a href="https://cloud.ldpgis.it/grossetoopen/page_dataset_show?id=constraint_airport" target="_new" title="View this dataset on the original page">original page on the Grosseto Portal</a>. At the same address there are also, for the enabled datasets, additional access formats, the preview of the visualization via API call, the consultation of the fields in DCAT-AP IT format, the possibility to express an evaluation and comment on the dataset itself. All resource formats available for this dataset can be downloaded as ZIP packages: inside the package sar&agrave; available the resource in the chosen format, complete with all the information on the metadata and the license associated with it. Polygonal dataset identifying the airport constraint<b>请注意：</b> 若要正确查看并使用本数据集，建议前往<a href="https://cloud.ldpgis.it/grossetoopen/page_dataset_show?id=constraint_airport" target="_new" title="在原始页面查看此数据集">Grosseto门户的原始页面</a>进行查阅。在该网址下，针对已启用的数据集，还提供了额外的访问格式、通过API调用实现的可视化预览、DCAT-AP IT格式字段的查阅功能，以及对数据集进行评分和评论的权限。 本数据集所有可用的资源格式均可打包为ZIP压缩包下载：压缩包内将包含所选格式的资源文件，以及与之关联的全部元数据和许可协议信息。 用于标识机场约束区域的多边形数据集