Regional ecological continuity (cer_obstacle_p_fr32) - Major barriers to flow - SRADDET Hauts-de-France 2020

Major flow barriers are water-related structures that cause a change in the flow of surface water. They disrupt the circulation of aquatic materials and species and ecological continuity. A CER geostandard was established by the CNIG in 2018 for harmonisation (cer_obstacle) http://cnig.gouv.fr/wp-content/uploads/2018/10/181001_Standard_CNIG_CER_v2018.pdf This data is the fixed representation on the voting date of the SRADDET (approved by prefectural order on August 4, 2020) Remember to consult the attached recommendations for use in resources https://sig.hautsdefrance.fr/ext/opendata/Sraddet2020/precisions_biodiversite.pdf大型水文阻隔设施是指会改变地表水流走向的涉水建筑结构。此类设施会干扰水生物质与物种的循环过程，同时破坏生态连续性。 法国国家地理信息委员会（CNIG）于2018年制定了CER地理标准（CER geostandard），用于开展标准化工作，该标准命名为cer_obstacle。相关标准文档可参阅：http://cnig.gouv.fr/wp-content/uploads/2018/10/181001_Standard_CNIG_CER_v2018.pdf 本数据集为SRADDET在表决当日的固化版本，该数据集已于2020年8月4日经省级政令批准。 请务必查阅随附的资源使用建议文档：https://sig.hautsdefrance.fr/ext/opendata/Sraddet2020/precisions_biodiversite.pdf