Abstract Strategic land use planning assumes a pivotal role in flood risk management. By using formal instruments, spatial planning can (i) legally secure areas for flood retention or other flood protection measures (hazard reduction) as well as (ii) regulate settlement development in hazard areas and ensure flood-adapted land uses (damage prevention). The interrelations between upstream and downstream riparian areas in flood risk management, however, require regional or catchment-oriented approaches in strategic land use planning to better coordinate land development options along rivers. This paper examines two strategic planning instruments in Austrian flood risk management. The two instruments – Blauzone Rheintal in Vorarlberg and Schutzwasserwirtschaftlicher Raumentwicklungsplan (SREP) in Carinthia – were developed by water authorities and spatial planning departments to prevent settlement growth in flood-prone areas and to secure land for flood protection schemes. Despite having similar problems in their backgrounds and objectives, the implementation processes of these instruments differ significantly: while the Blauzone Rheintal was formalized as a legally binding regional land use plan, the SREP was not developed beyond the pilot stage. This paper identifies important contextual conditions and lessons learned to facilitate the scaling-up and replication of catchment-oriented spatial planning instruments in other flood-prone regions.

中文翻译：

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洪水风险管理中的合作：理解战略规划在两个奥地利政策工具中的作用

摘要 战略性土地利用规划在洪水风险管理中发挥着关键作用。通过使用正式的工具，空间规划可以 (i) 在法律上确保防洪或其他防洪措施（减少灾害）的区域，以及 (ii) 规范受灾地区的定居点开发并确保适应洪水的土地利用（防止损害）。然而，洪水风险管理中上游和下游河岸地区之间的相互关系需要在战略土地利用规划中采用区域或集水区导向的方法，以更好地协调沿河的土地开发方案。本文考察了奥地利洪水风险管理中的两种战略规划工具。这两个工具——福拉尔贝格州的 Blauzone Rheintal 和卡林西亚州的 Schutzwasserwirtschaftlicher Raumentwicklungsplan (SREP)——由水务部门和空间规划部门开发，以防止洪水易发地区的定居点增长并确保土地用于防洪计划。尽管背景和目标存在类似问题，但这些文书的实施过程却大相径庭：虽然 Blauzone Rheintal 被正式确定为具有法律约束力的区域土地利用计划，但 SREP 并未在试点阶段之后制定。本文确定了重要的背景条件和经验教训，以促进其他洪水易发地区以流域为导向的空间规划工具的扩大和复制。