ENS — Preemption Areas — Calvados Department

The pre-emption perimeters, approved in advance by the municipal council of the municipalities concerned, are then validated by the Calvados departmental council. The department thus takes priority over the acquisition of these plots when they are put up for sale. **Collection context** The Department of Natural Environments of Calvados creates the perimeter of pre-emption zones from the vector table of the cadastral matrix. **Collection method** The data is then integrated into the geographical information system — GIS — of the Calvados department. **Attributes** | Field | Alias | Type | | — | — | — | | ‘id_zp’ | unique identifier of the preamption zone | ‘int4,PrimaryKey’ | | ‘communes_creation’ | municipalities included in the ZP perimeter when it was created | ‘varchar’ | | ‘surface_creation’ | surface in m² of the ZP perimeter when it was created | ‘float8’ | | ‘date_creation’ | date of creation of the ZP | ‘date’ | | ‘num_site’ | | ‘int4’ | | ‘libelle_site’ | | ‘varchar’ | For more information, see [the metadata on the Isogeo catalog](https://open.isogeo.com/s/434296189d794266a04a8678e256f0c4/HiLeps3y1qrSx6aTDmKyp0spGPix0/r/f92e129656eb4e2a89a632c6e2486d1c).优先购买权辖区（pre-emption perimeters）经相关市镇市政委员会预先审批后，还需经由卡尔瓦多斯省议会完成最终核验。 该省由此在相关地块进入挂牌出让流程时，享有优先收购权。 **采集背景** 卡尔瓦多斯省自然环境部门通过地籍矩阵（cadastral matrix）矢量数据表，生成优先购买权辖区范围。 **采集方法** 该数据随后将被集成至卡尔瓦多斯省地理信息系统（GIS）中。 **数据属性** | 字段名 | 别名 | 数据类型 | | — | — | — | | `id_zp` | 优先购买区唯一标识符（unique identifier of the pre-emption zone） | `int4，主键` | | `communes_creation` | 优先购买区创建时纳入的市镇列表 | `varchar` | | `surface_creation` | 优先购买区创建时的面积（单位：平方米） | `float8` | | `date_creation` | 优先购买区创建日期 | `date` | | `num_site` | 无 | `int4` | | `libelle_site` | 无 | `varchar` | 如需了解更多信息，请参阅[Isogeo目录中的元数据](https://open.isogeo.com/s/434296189d794266a04a8678e256f0c4/HiLeps3y1qrSx6aTDmKyp0spGPix0/r/f92e129656eb4e2a89a632c6e2486d1c)。