Collaborative Research: Sustaining and amplifying the ITEX AON through automation and increased interdisciplinarity of observations.

合作研究：通过自动化和增加观测的跨学科性来维持和扩大 ITEX AON。

• 批准号: 0856728
• 负责人: Jeffrey Welker
• 金额: $ 59.19万
• 依托单位: University of Alaska Anchorage Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0856728&HistoricalAwards=false
• 关键词: Collaborative; Research; Sustaining; amplifying; ITEX

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The goal of this project is to maintain the existing ITEX AON and increase the applicability of the data collected to the greater scientific community. The International Tundra Experiment (ITEX) network has collected data on phenology, plant growth, community composition and ecosystem properties as part of a greater effort to study environmental arctic change. The network, started in early 1990?s, has played a key role in advancing knowledge related to the likely impacts of a warmer arctic through the use of experimentally warmed and un-manipulated plots (i.e., the controls) across a range of sites and ecosystems that span the major vegetation types of the Arctic. While of great value, most ITEX measurements are labor intensive and time consuming, which limit the frequency and spatial extent of sampling. Recent advances in sensor technology hold the promise to allow sampling of surrogates of these manual measurements rapidly and over larger areas. This work will continue the ITEX AON observations and initiate a suite of related, non-intrusive measurements using robotic sensor platforms (networked infomechanical systems, NIMS). These new measurements will enable scaling of measurements to the regional level by linking to existing 1 km2 sample grids and satellite imagery. These data are urgently needed to improve our capacity to monitor the impacts of changing tundra vegetation on the arctic system. This work should improve our understanding of the exchange of carbon and water across the land atmosphere interface and provide information on forage quality for herbivores.

该奖项根据 2009 年美国复苏和再投资法案（公法 111-5）提供资金。该项目的目标是维持现有的 ITEX AON 并提高所收集数据对更大科学界的适用性。国际苔原实验（ITEX）网络收集了有关物候、植物生长、群落组成和生态系统特性的数据，作为研究北极环境变化的更大努力的一部分。该网络于 20 世纪 90 年代初启动，通过在跨越北极主要植被类型的一系列地点和生态系统中使用实验性变暖和未经操纵的地块（即对照），在推进与北极变暖可能影响相关的知识方面发挥了关键作用。虽然很有价值，但大多数 ITEX 测量都是劳动密集型且耗时的，这限制了采样的频率和空间范围。传感器技术的最新进展有望在更大的区域内快速对这些手动测量的替代物进行采样。这项工作将继续 ITEX AON 观测，并使用机器人传感器平台（网络信息机械系统，NIMS）启动一系列相关的非侵入式测量。这些新的测量将通过链接到现有的 1 平方公里样本网格和卫星图像，将测量扩展到区域级别。迫切需要这些数据来提高我们监测苔原植被变化对北极系统影响的能力。这项工作应该提高我们对陆地大气界面碳和水交换的理解，并提供有关食草动物饲料质量的信息。