The coastal ecosystems are a key subject of contemporary research concerning coastline position changes, climate change effects, hazard assessment, and ecosystem services. The population density in the coastal areas accelerates the natural morphogenetic processes of these ecosystems. The land-use planning strategies can have a vital role in achieving coastal ecosystem stability and providing resilience to risks. This study's primary goal was to compare and evaluate different methodologies of mapping the protection area near the cliff crests designated by Coastal Protection Zones (CPZ). It was also proposed an alternative model (CPZ model). It was expected to contribute to the discussion of the best land use in these areas. The work was applied at a local scale in Lourinhã Municipality and at a national level (Portugal). The local scale results showed that the CPZ model would protect an area with a width between 96 and 327 m from the cliff crest. In contrast, the 2012 Portuguese legal framework application only covers a width between two and 9 m. The land-use planning of these zones must be carefully planned, and soil sealing must not be encouraged. In Portugal, the built-up areas stay between 1.2% and 14% of the different CPZ mapped.

沿海生态系统是有关海岸线位置变化，气候变化影响，危害评估和生态系统服务的当代研究的关键主题。沿海地区的人口密度加快了这些生态系统的自然形态发生过程。土地利用规划战略对于实现沿海生态系统的稳定和抵御风险具有至关重要的作用。这项研究的主要目的是比较和评估在沿海保护区（CPZ）指定的悬崖顶附近绘制保护区的不同方法。还提出了一种替代模型（CPZ模型）。预计将有助于讨论这些地区的最佳土地利用。这项工作在Lourinhã市的地方规模和全国范围内（葡萄牙）进行了应用。局部尺度结果表明，CPZ模型可以保护距悬崖顶峰96至327 m的区域。相比之下，2012年葡萄牙法律框架申请仅涵盖2至9 m的宽度。这些区域的土地利用规划必须经过仔细规划，并且绝不能鼓励土壤密封。在葡萄牙，建成区面积占不同CPZ地图的1.2％至14％。