Acquisition of a nitrogen analyzer

购置氮分析仪

• 批准号: 9220850
• 负责人: Patrice Morrow
• 金额: $ 2.02万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-15 至 1995-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9220850&HistoricalAwards=false
• 关键词: Acquisition; nitrogen; analyzer

Total nitrogen content of plant tissues and soils is a widely used assay in ecological research. We have need for 800 such assays each year which is twice what our current analyzer can handle. Here we request purchase of an additional nitrogen analyzer and ancillary equipment. Four research programs in our department rely heavily upon total nitrogen determinations. Two groups focus on plant responses to stress (drought, nutrient, salinity and extreme light levels) and how those responses influence the population and evolutionary responses of herbivorous insects. The third group looks at the distribution of plant communities through time and asks how soil type influences the persistence of plant communities at particular sites over thousands of years. The fourth group focuses on experimental analysis of the mechanisms of plant competition for mineral resources during the succession from abandoned fields to oak savanna.

植物组织和土壤的总氮含量是 在生态学研究中被广泛使用。 我们需要 每年有800次这样的检测， 分析器可以处理。 在这里，我们要求购买 额外的氮分析仪和辅助设备。 四 我们部门的研究项目在很大程度上依赖于总数 氮测定 两个小组专注于植物 对压力（干旱、营养、盐度和极端环境）的反应 以及这些反应如何影响 草食动物的种群和进化反应 昆虫 第三组研究植物的分布 并询问土壤类型如何影响 植物群落在特定地点的持久性 几千年来。 第四组集中在 植物竞争机制的实验分析 从废弃地到地下的继承过程中 到橡树草原。