Acquisition of a Field Spectroradiometer

购买现场光谱辐射计

• 批准号: 1665519
• 负责人: Nancy Glenn
• 金额: $ 7.49万
• 依托单位: Boise State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1665519&HistoricalAwards=false
• 关键词: Acquisition; Field; Spectroradiometer

This grant supports acquisition of a field portable spectroradiometer which can image sample reflected light wavelengths across a wide spectrum (350-2500 nm) and with nanometer scale spectral resolution and associated data reduction software. The spectroradiometer will support faculty and student research and research training in the Department of Geosciences at Boise State University. The spectroradiometer and associated data reduction software will be used with a range of studies addressing NSF's 10 Big Ideas, including Growing Convergent Research at NSF, Harnessing Data for 21st Century Science and Engineering, and Understanding the Rules of Life: Predicting Phenotype. The investigators are actively engaged in a university-wide Louis Stokes Alliance for Minority Participation (LSAMP) program and an NSF EPSCoR Undergraduate Research and Internships program. The researchers will use the spectroradiometer for experiential learning as part of these outreach and education efforts. This support is congruent with NSFs mission of promoting the progress of science and advancing the national health, prosperity and welfare given the societal relevance of targeted research aimed at understanding the terrestrial water cycle with implications for improved water resource management and the impact of the acquisition on training the next generation scientific workforce. Research applications include studies of inorganic and organic soil carbon and its biogeochemical cycling and post-fire redistribution of carbon in the Reynolds Creek Experimental Watershed Critical Zone Observatory site. Question to be addressed include: 1) What are the controls on the distribution and amounts of organic and inorganic soil carbon? ; and 2) How do fire severity, vegetation type, and soil texture affect the redistribution of soil nutrients and soil organic carbon? The field spectroradiometer will be used in both the field and lab settings by students and faculty associated with several NSF Division of Earth Sciences (EAR) and related program studies, including the Reynolds Creek Critical Zone Observatory (RC-CZO). The investigators and their students will correlate measurements of soil organic and inorganic carbon from laboratory-based carbon analyses with spectroscopy of soils in the lab and field settings. The statistical relationships between the carbon and inorganic carbon measurements and the soil spectra will be applied to independent soil spectra in the field and laboratory to increase the number of observations of soil carbon, while reducing cost and time associated with the assay measurements. The increased number of soil carbon observations will increase the spatial resolution and confidence of soil carbon maps as well as the understanding of the controls on soil carbon. Similarly, soil and vegetation spectra will be collected in the field to be used as endmembers with imaging spectroscopy to map the vegetation and soils of a post-fire study. This information will be used to help understand post-fire redistribution of soil nutrients and organic carbon, and what role vegetation plays in regulating the delivery of sediment across a dryland ecosystem (in which wind erosion is dominant). Additional applications include studies of land use change on vegetation-land surface-atmosphere interactions and hydrologic cycling and studies of snowpack spectral properties to better model water and energy balance. These applications are also focused on predicting spring snow melt timing and magnitude to improve water resource management. The support will also be used for spectral classification of sagebrush-steppe ecosystem vegetation-soil-water interactions to improve large scale remote sensing modality image classification algorithms.

该赠款支持获取现场便携式光谱仪，该光谱仪可以在宽光谱（350-2500 nm）和纳米尺度谱分辨率和相关的数据减少软件中对样品反射的光波长进行成像。 SpectrorAdiometer将支持博伊西州立大学地球科学系的教师研究与研究培训。 SpectrorAdiometer和相关的数据减少软件将用于针对NSF的10个大想法的一系列研究，包括在NSF的融合研究，利用21世纪科学和工程的数据以及了解生活规则：预测表型。 调查人员积极从事大学范围内的路易斯·斯托克斯联盟（Louis Stokes Alliance）参加少数群体参与（LSAMP）计划和NSF EPSCOR本科研究和实习计划。研究人员将使用光谱仪进行体验式学习，作为这些外展和教育工作的一部分。这种支持与NSFS的使命一致，即鉴于有针对性的研究的社会相关性，旨在理解陆地水周期的社会意义，并促进了国民健康，繁荣和福利，并促进了对水资源管理的影响以及习惯对培训下一代科学劳动的影响的影响。研究应用程序包括对无机和有机土壤碳的研究及其生物地球化学循环以及雷诺兹溪实验性分水岭临界区天文台的生物地球化学循环和碳后碳的重新分布。 要解决的问题包括：1）关于有机和无机土壤碳的分布和量的控件是什么？ ; 2）火灾严重程度，植被类型和土壤质地如何影响土壤养分和土壤有机碳的重新分布？ 野外光谱仪将在野外和实验室环境中使用与几个NSF地球科学分区（EAR）和相关计划研究相关的教职员工，包括雷诺兹溪关键区观测站（RC-CZO）。 研究人员及其学生将通过实验室和现场环境中土壤的光谱进行基于实验室的碳分析的土壤有机和无机碳的测量。碳和无机碳测量结果与土壤光谱之间的统计关系将应用于田间和实验室的独立土壤光谱，以增加土壤碳的观察次数，同时减少与测定测量结果相关的成本和时间。土壤碳观察的数量增加将增加土壤碳图的空间分辨率和信心，并了解对土壤碳的控制。同样，将在现场收集土壤和植被光谱，以用作成像光谱法的最终成员，以绘制大火后研究的植被和土壤。该信息将用于帮助了解土壤养分和有机碳的火灾后重新分布，以及植被在调节在旱地生态系统中的沉积物传递方面的作用（其中风侵蚀是主要的）。 其他应用包括对植被地面 - 大气相互作用的土地利用变化以及水文循环以及积雪光谱特性的研究，以更好地模拟水和能量平衡。这些应用还集中在预测春季降雪的时机和幅度上，以改善水资源管理。该支持还将用于鼠尾草steppe生态系统植被 - 土壤 - 水 - 水的频谱分类，以改善大型遥感图像分类算法。