Soil Total Carbon and Total Nitrogen on the Main Cropping System Experiment at the Kellogg Biological Station, Hickory Corners, MI (1989 to 2001)

Soil carbon and nitrogen are presented as % elemental carbon and nitrogen (g C or N / 100 g soil) for the sampling depth of the specific sampling date unless indicated otherwise. Samples were taken with either a 2.5 cm diameter soil corer (sampling by soil depth) or a 10 cm diameter Giddings probe (sampling by soil profile). See Baseline Soil Sampling protocol for general sampling information. For specific sampling details for a particular date, see Soil Sampling Field Log. Soil samples are sieved to 4mm and composited by plot. Soil % elemental carbon and nitrogen values are determined by sample combustion and subsequent TCD gas chromatography, using a Carlo Erba automated CHN analyzer as described in the sampling protocol.
original data source http://lter.kbs.msu.edu/datasets/27 Resources in this dataset:Resource Title: Website Pointer to html file. File Name: Web Page, url: https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-kbs&identifier=24 Webpage with information and links to data files for download

本数据集提供了土壤碳氮含量，以百分比的元素碳氮（单位为g C或N/100g土壤）的形式呈现，具体采样深度取决于特定采样日期，除非另有说明。采样采用2.5厘米直径的土壤钻头（按土壤深度采样）或10厘米直径的Giddings探头（按土壤剖面采样）。有关一般采样信息，请参阅基准土壤采样方案。对于特定日期的详细采样信息，请查阅土壤采样现场日志。土壤样品经过4毫米筛分，并按地块进行混合。土壤中元素碳氮的百分比值通过样品燃烧和随后的气相色谱法（使用Carlo Erba自动CHN分析仪，具体操作方法见采样方案）进行测定。