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首页> 外文期刊>Remote Sensing >Advanced Land Observing Satellite Phased Array Type L-Band SAR (ALOS PALSAR) to Inform the Conservation of Mangroves: Sundarbans as a Case Study
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Advanced Land Observing Satellite Phased Array Type L-Band SAR (ALOS PALSAR) to Inform the Conservation of Mangroves: Sundarbans as a Case Study

机译：先进的陆地观测卫星相控阵L波段SAR（ALOS PALSAR）技术，以保护红树林：Sundarbans为例

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摘要

Mangroves are an important bulkhead against climate change: they afford protection for coastal areas from tidal waves and cyclones, and are among the most carbon-rich forests in the tropics. As such, protection of mangroves is an urgent priority. This work provides some new information on patterns of degradation in the Sundarbans, the largest contiguous mangrove forest in the world, which are home to more than 35 reptile species, 120 commercial fish species, 300 bird species and 32 mammal species. Using radar imagery, we contrast and quantify the recent impacts of cyclone Sidr and anthropogenic degradation on this ecosystem. Our results, inferred from changes in radar backscatter, confirm already reported trends in coastline retreat for this region, with areas losing as much as 200 m of coast per year. They also suggest rapid changes in mangrove dynamics for Bangladesh and India, highlighting an overall decrease in mangrove health in the east side of the Sundarbans, and an overall increase in this parameter for the west side of the Sundarbans. As global environmental change takes its toll in this part of the world, more detailed, regular information on mangroves’ distribution and health is required: our study illustrates how different threats experienced by mangroves can be detected and mapped using radar-based information, to guide management action.
机译：红树林是抵御气候变化的重要隔离墙：它们为沿海地区提供了防潮和防旋风的保护，并且是热带地区碳含量最高的森林之一。因此，保护​​红树林是当务之急。这项工作提供了有关世界最大的连续红树林森达尔班地区退化模式的一些新信息，该物种拥有35种以上爬行动物，120种商业鱼类，300种鸟类和32种哺乳动物。利用雷达图像，我们对比和量化了飓风Sidr和人为破坏对该生态系统的近期影响。根据雷达反向散射的变化推论得出的结果证实了该地区已经报道的海岸线退缩趋势，该地区每年损失的海岸多达200 m。他们还建议孟加拉国和印度的红树林动态快速变化，突显了桑达尔班东部的红树林健康状况总体下降，而桑达尔班西部的红树林健康状况总体上升。随着全球环境变化在世界这部分地区造成的损失，需要有关红树林的分布和健康的更详细，定期的信息：我们的研究说明了如何利用基于雷达的信息来检测和绘制红树林所经历的不同威胁，以提供指导管理行动。

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