Global Fertilizer and Manure, Version 1: Nitrogen Fertilizer Application

The Nitrogen Fertilizer Application data set of the Global Fertilizer and Manure, Version 1 Data Collection represents the amount of nitrogen fertilizer nutrients applied to croplands. The national-level nitrogen fertilizer application rates for crops are from the International Fertilizer Industry Association (IFA) "Fertilizer Use by Crop 2002" statistics database that is available by request from the Food and Agriculture Organization (FAO). The number of crop-specific fertilizer application rates reported for each country ranged from 2 crops (Guinea) to over 50 crops (United States), and the years for which the data are reported range from 1994 to 2001. Spatially explicit fertilizer inputs of Nitrogen (N) were computed by fusing national-level statistics on fertilizer use with global maps of harvested area for 175 crops. The data were compiled by Potter et al. (2010) and are distributed by the Columbia University Center for International Earth Science Information Network (CIESIN).

《全球肥料与粪便数据集》第1版之氮肥应用数据集，详尽记录了施加于农田的氮肥营养物质的总量。该数据集收录了来自国际肥料工业协会（IFA）“肥料按作物使用情况2002”统计数据库的国家级作物氮肥应用率，该数据库可通过请求从联合国粮食及农业组织（FAO）获取。每个国家报告的作物专用肥料应用率数量从2种作物（几内亚）到超过50种作物（美国）不等，数据报告的年份跨度为1994年至2001年。通过融合国家级肥料使用统计数据与全球175种作物的收获面积地图，计算出了空间明确的氮肥（N）输入量。该数据集由Potter等人（2010年）编制，并由哥伦比亚大学国际地球科学信息网络中心（CIESIN）分发。