Acquisition of a Carbon-Nitrogen-Sulfur Analyzer

这笔拨款为获得用于固体样品的碳氮硫（CNS）分析仪提供了部分支持。该仪器将取代耶鲁大学林业与环境研究学院陈旧的CHN分析仪，该分析仪已不能使用。该中心将支持林业、土壤科学和海洋化学等领域的研究和教育。CHN研究用途的具体例子将包括：测量盐沼沉积物和植被的C和N含量，以便了解沼泽的增加和损失过程及其对沿海水质的影响；测量河流悬浮沉积物的S含量，以便更好地了解含氧地表水中的S循环及其对微量金属形态的影响；测量河流悬浮沉积物的C和N含量，以补充同位素研究旨在了解颗粒有机碳的来源和生物有效性，测量土壤和植物材料（包括木本组织）的C和N含量，以评估哈伯德布鲁克实验森林营养状况变化的影响；测量叶片N含量，以了解对幼苗发育和树木健康的生态生理控制；测量热带森林土壤和植被的C和N含量，以评估C这些生态系统中的碳封存

0337134AnisfeldThis grant provides partial support for the acquisition of a Carbon-Nitrogen-Sulfur(CNS) analyzer for solid samples. This instrument would replace an antiquated CHN analyzer in the School of Forestry and Environmental Studies at Yale University which is no longer operable. The CHN would support research and education in fields spanning disciplines of forestry, soil science and marine chemistry. Specific examples of research uses of the CHN will include:o measurement of C and N content of salt marsh sediment and vegetation in order tounderstand marsh accretion and loss processes and their implications for coastal water qualityo measurement of S content of riverine suspended sediment in order to better understand the S cycle in oxygenated surface waters and its impact on trace metal speciationo measurement of C and N content of riverine suspended sediment to supplement isotopicstudies aimed at understanding sources and bioavailability of particulate organic carbono measurement of C and N content of soil and plant material (including woody tissue) in order to assess the effects of changing nutrient status at the Hubbard Brook Experimental Foresto measurement of foliage N content in order to understand the ecological and physiological controls on seedling development and tree healtho measurement of C and N content of tropical forest soils and vegetation in order to assess C sequestration in these ecosystems.***