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.

该补助金支持购置一台现场便携式分光辐射计，该分光辐射计可以在宽光谱（350-2500 nm）范围内对样品反射光波长进行成像，并具有纳米级光谱分辨率和相关的数据简化软件。分光辐射计将支持博伊西州立大学地球科学系的教师和学生的研究和研究培训。光谱辐射仪和相关的数据处理软件将用于一系列研究，解决NSF的10大想法，包括在NSF的增长收敛研究，利用数据为21世纪世纪科学和工程，并了解生命的规则：预测表型。 研究人员正在积极参与全校范围内的路易斯·斯托克斯少数民族参与联盟（LSAMP）计划和NSF EPSCoR本科生研究和实习计划。研究人员将使用分光辐射计进行体验式学习，作为这些推广和教育工作的一部分。这种支持与NSF的使命是一致的，即促进科学进步和促进国家健康，繁荣和福利，因为有针对性的研究旨在了解陆地水循环的社会意义，对改善水资源管理的影响以及收购对培训下一代科学工作人员的影响。研究应用包括无机和有机土壤碳及其生态地球化学循环和火灾后的碳在雷诺兹溪实验流域临界区观测站网站的再分配的研究。 主要问题包括：1）土壤有机碳和无机碳的分布和数量受什么样的控制？火灾强度、植被类型和土壤质地如何影响土壤养分和有机碳的再分布？ 现场光谱辐射计将由与美国国家科学基金会地球科学部（EAR）和相关项目研究（包括雷诺兹溪临界区天文台（RC-CZO））相关的学生和教师在现场和实验室环境中使用。 研究人员和他们的学生将把实验室碳分析中的土壤有机碳和无机碳的测量与实验室和野外环境中的土壤光谱学相关联。碳和无机碳测量与土壤光谱之间的统计关系将应用于野外和实验室的独立土壤光谱，以增加土壤碳的观测次数，同时减少与分析测量相关的成本和时间。土壤碳观测数量的增加将提高土壤碳图的空间分辨率和可信度，并加深对土壤碳控制的理解。同样，将在实地收集土壤和植被光谱，作为成像光谱的端元，绘制火灾后研究的植被和土壤图。这一信息将用于帮助了解火灾后土壤养分和有机碳的重新分布，以及植被在调节旱地生态系统（风蚀占主导地位）沉积物输送方面发挥的作用。 其他应用包括研究土地利用变化对植被-地表-大气相互作用和水文循环的影响，以及研究积雪的光谱特性，以更好地模拟水和能量平衡。这些应用还侧重于预测春季积雪融化的时间和规模，以改善水资源管理。这种支持还将用于山艾树-草原生态系统植被-土壤-水相互作用的光谱分类，以改进大尺度遥感模态图像分类算法。