Wetlands migration in Toa Baja, Puerto Rico

We simulated the coastal wetlands migration under sea level rise scenarios using the Sea Level Affecting Marshes Model (SLAMM). The input DEM is at the spatial resolution of 5 m created from Lidar data accessible at Digital Coast website. The wetland distribution is according to the National Wetland Inventory and the wetlands classification was modified to fit that in SLAMM manual. The developed areas were delineated according to the aerial photos taken in 2010 at the spatial resolution of 0.4 m. The wetland migration maps are at the spatial resolution of 5 m.

本研究采用海平面影响湿地模型（Sea Level Affecting Marshes Model，SLAMM），对海平面上升情景下的海岸湿地迁移过程进行了模拟。输入数据为从Digital Coast网站公开的激光雷达（Light Detection and Ranging，LiDAR）数据生成的空间分辨率5米的数字高程模型（Digital Elevation Model，DEM）。湿地分布数据源自国家湿地清查（National Wetland Inventory），且湿地分类体系已参照SLAMM手册的规范进行适配修正，以契合模型要求。建成区范围基于2010年获取的空间分辨率0.4米的航空影像完成勾绘。最终生成的湿地迁移地图空间分辨率为5米。