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MODELING FUTURE COASTAL WETLAND TRANSITION INDUCED BY RELATIVE SEA-LEVEL RISE

机译:相对海平升起的未来沿海湿地转型建模

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Using a 1-m lidar digital elevation model and detailed wetlands mapping, we developed an inundation model that projects future wetland distribution caused by sea-level rise Vertical accretion, edge erosion, and land-subsidence components are also included in the model Applying the model to a section of Galveston Island, Texas, and using the actual annual record of ocean level recorded by a nearby tide gauge shows the complicated interplay of decadal-scale water-level variation and topography in determining the future distribution of wetlands. Total wetland coverage declines by 22% in 30 years but recovers to a net loss of just 5% within 90 years. Uplands transitioning to high-marsh wetlands more than offset the effects of inundation, allowing high-marsh wetlands to increase in coverage by 132%, Low-marsh wetlands, however, decrease by 77% at the end of the 90-year model period.
机译:使用1米的LIDAR数字海拔模型和详细的湿地映射,我们开发了一种淹没模型,将未来的湿地分布投射由海平面上升垂直增散,边缘侵蚀和土地沉降组件的未来湿地分布也包括在应用模型的模型中到了加利福顿岛,德克萨斯州的一部分,并使用附近潮规记录的海洋水平的实际年度记录显示了二等规模水平变化和地形在确定湿地的未来分布时复杂的相互作用。 30年后,湿地覆盖率总覆盖率下降22%,但在90年内恢复净损失仅为5%。高地过渡到高沼泽湿地的抵消了淹没的影响,使高沼泽湿地增加了132%,低沼泽湿地的覆盖率增加,但在90年的模型期结束时减少了77%。

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