Alternative methods for assessing and monitoring mangrove forests

评估和监测红树林的替代方法

• 批准号: 249496-2008
• 负责人: Kovacs, John
• 金额: $ 1.09万
• 依托单位: Nipissing University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=479212
• 关键词: Alternative; methods; assessing; monitoring; mangrove

Mangroves are considered one of the most productive ecosystems in the world, serving both terrestrial and marine food webs as well as acting, for marginalized peoples of tropical coasts, as an essential local renewable resource and barrier against tsunamis, sea-level rise and storm surges. However, these forested wetlands are experiencing annual rates of loss that exceed that of terrestrial tropical rainforests. One main limitation to their protection is the inability to receive updated information regarding the extent and condition of many of these forests. Consequently, a focus of my proposed research is to assess whether new space-borne sensors, including Canada's Radatsat-2, can be used to extract vital biophysical parameter data (e.g. tree height, tree density, biomass) from these stands. Able to image at night and through clouds, these radar satellite are now equipped with sensors that could possibly, for the first time, allow highly accurate mapping of mangroves in quasi-permanent cloud covered regions. One of the major causes of mangrove loss is upland water diversion projects (e.g. dams). Consequently, I also intend to model relationships between changing hydrological data for two of the world's largest rivers and their mangrove forests using historical in situ and satellite data.

红树林被认为是世界上最具生产力的生态系统之一，为陆地和海洋食物网服务，对热带海岸边缘化的人民来说，红树林是一种重要的当地可再生资源，也是抵御海啸、海平面上升和风暴潮的屏障。 然而，这些森林湿地的年损失率超过了陆地热带雨林。 对这些森林的保护的一个主要限制是无法获得关于其中许多森林的范围和状况的最新资料。 因此，我建议的研究重点是评估新的空间传感器，包括加拿大的Radatsat-2，是否可以用来提取重要的生物物理参数数据（如树高，树密度，生物量）从这些立场。 这些雷达卫星能够在夜间和云层中成像，现在配备的传感器可能首次允许在准永久云层覆盖地区高度准确地绘制红树林地图。 红树林消失的主要原因之一是高地引水工程（如水坝）。 因此，我还打算利用历史原位和卫星数据，对世界上两条最大的河流及其红树林的水文数据变化之间的关系进行建模。