Mapping Aboveground and Foliage Biomass Over the Porcupine Caribou Habitat in Northern Yukon and Alaska Using Landsat and JERS-1/SAR Data
Mapping Aboveground and Foliage Biomass Over the Porcupine Caribou Habitat in Northern Yukon and Alaska Using Landsat and JERS-1/SAR Data
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使用 Landsat 和 JERS-1/SAR 数据绘制育空北部和阿拉斯加豪猪驯鹿栖息地的地上和树叶生物量图
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发表时间：
2012
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通讯作者：
Z. Chen
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作者：
Wenjun Chen;Wenqing Chen;Junhua Li;Yu Zhang;R. Fraser;I. Olthof;S. Leblanc;Z. Chen
北美驯鹿和土著人民之间的联系已经存在了数千年。驯鹿在土著人民的经济、文化和生活方式中发挥了关键作用(Hall，1989；Madsen，2001)。目前，北极有60个主要的迁徙冻原驯鹿群，其中30个位于北美，包括加拿大育空北部和美国阿拉斯加北部的豪猪驯鹿群(Russell等人，1992；Russell等人，1993；Russell&McNeil，2002；Russell等人，2002；Griffith等人，2002)。豪猪驯鹿群一直处于北极野生动物栖息地保护和产业发展之间争论的中心，因为北极国家野生动物保护区(ANWR)1002区域可能存在石油钻探，恰好与豪猪驯鹿群的产卵地大部分重叠(Griffith等人，2002年；Kaiser，2002年；国家研究委员会，2003年；Heuer，2006年)。题为“气候变化对加拿大北极冻原生态系统的影响：跨学科和多尺度评估”的加拿大国际极地年项目的目标之一是，与北极圈兰菲尔监测和评估网络密切合作，评估气候变化对加拿大北部驯鹿栖息地的影响(http://www.rangifer.net/carma/)。由于北极陆地的广袤和偏远，固有的后勤困难，以及进行实地测量的高昂成本，仅基于实地调查的方法对于监测和评估气候对驯鹿栖息地的影响显然是不现实的。卫星遥感可以在大范围内重复和一致地从太空监测地表。因此，遥感为监测和评估气候对驯鹿栖息地的影响提供了强有力的工具，通过实地测量和其他独立数据进行了校准和验证。在这项研究中，我们报告了利用Landsat和JERS1/SAR数据在育空和阿拉斯加北部的豪猪驯鹿栖息地开发了地上和树叶生物量基线地图。具体地说，我们将(1)描述地上和叶的生物量测量，(2)建立和验证测量和遥感指数之间的关系，以及(3)绘制豪猪驯鹿栖息地的地上和叶的生物量图。
The linkage between caribou and the aboriginal people in the North America has existed for thousands of years. Caribou have played a critical role in the economy, culture, and way of life of the aboriginal people (Hall, 1989; Madsen, 2001). Currently, there are 60 major migratary tundra caribou herds circum-arctic, of which 30 are located in North America, including the Porcupine caribou herd in northern Yukon, Canada and northern Alaska, USA (Russell et al., 1992; Russell et al., 1993; Russell & McNeil, 2002; Russell et al., 2002; Griffith et al., 2002). The Porcupine caribou herd has been at the centre of debate between wildlife habitat conservation and industrial development in the Arctic because of the potential oil drilling in the Arctic National Wildlife Refuge (ANWR) 1002 area, which happens to largely overlap with the calving ground of the Porcupine caribou herd (Griffith et al., 2002; Kaiser, 2002; National Research Council, 2003; Heuer, 2006). One of the objectives of the Canadian International Polar Year (IPY) project entitled “Climate Change Impacts on Canadian Arctic Tundra Ecosystems (CiCAT): Interdisciplinary and Multi-scale Assessments” was to assess the impact of climate change on caribou habitats over Canada’s north, in close collaboration with the CircumArctic Ranfiger Monitoring and Assessment network (CARMA) (http://www.rangifer.net /carma/). Because of the vastness and remoteness of the arctic landmass, inherent logistic difficulty, and high cost of conducting field measurements, an approach that is solely based on field inventory is clearly impractical for monitoring and assessing the impact of climate on caribou habitats. Satellite remote sensing can monitor land surfaces from space repeatedly and consistently over large areas. Therefore, remote sensing provides a powerful tool for monitoring and assessing the impact of climate on caribou habitats, when calibrated and validated against the field measurements and other independent data. In this study, we report the development of baseline maps of aboveground and foliage biomass over the Porcupine caribou habitat in northern Yukon and Alaska, using Landsat and JERS1/SAR data. Specifically, we will (1) describe aboveground and foliage biomass measurement, (2) establish and validate relationships between measurements and remote sensing indices, and (3) map aboveground and foliage biomass for the Porcupine caribou habitat.