Worldwide Organic Soil Carbon and Nitrogen Data (1986) (NDP-018)

This data base was begun with the collection and analysis of soil samples from California. Additional data came from soil surveys of Italy, Greece, Iran, Thailand, Vietnam, various tropical Amazonian areas, and U.S. forests and from the soil-survey literature. The analyzed samples were collected at uniform soil-depth increments and included bulk-density determinations. The data on each sample are soil profile number; soil profile carbon content; soil profile nitrogen content; sampling site latitude and longitude; site elevation; profile literature reference source; and soil profile codes for Holdridge life zone, Olson ecosystem type, and parent material. These data may be used to estimate the size of the soil organic carbon and nitrogen pools at equilibrium with natural soil-forming factors. For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/ndps/ndp018.html

本数据库始于加利福尼亚州土壤样品的采集与分析工作。其余数据则源自意大利、希腊、伊朗、泰国、越南、亚马逊流域多个热带区域以及美国森林的土壤调查，同时收录自已发表的土壤调查文献。所分析的样品均按统一的土壤深度增量采集，并包含容重测定数据。每份样品的记录字段包括：土壤剖面编号、土壤剖面碳含量、土壤剖面氮含量、采样点经纬度、采样点海拔高度、剖面文献引用来源，以及代表霍尔德里奇生命带（Holdridge life zone）、奥尔森生态系统类型（Olson ecosystem type）和母质的土壤剖面编码。本数据集可用于估算与自然成土因子达到平衡状态的土壤有机碳库与氮库规模。若需获取数据文件，请点击此链接跳转至CDIAC数据迁移网站：http://cdiac.ess-dive.lbl.gov/ndps/ndp018.html