Global Fertilizer and Manure, Version 1: Nitrogen in Manure Production

The Nitrogen in Manure Production data set of the Global Fertilizer and Manure, Version 1 Data Collection represents the amount of nitrogen manure produced and present on the landscape. The manure production at grid cell level was computed based on livestock population and nutrient excretion rates. The livestock population per grid cell was computed by multiplying the density values from FAO Gridded Livestock of the World by the area of grid cell. Spatially explicit manure produced and present on landscape is derived by combining the number of livestock heads and the nutrient excretion rate. 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（版本1）中的氮含量数据集，描绘了在景观中产生的氮含量以及存在的粪便量。该数据集在网格单元级别上计算粪便产生量，其计算依据为牲畜种群和营养排泄率。每个网格单元的牲畜种群是通过将联合国粮食及农业组织（FAO）的全球网格化牲畜数据密度值与网格单元面积相乘得到的。在景观中产生的和现有的粪便的空间分布信息，是通过结合牲畜头数和营养排泄率得出的。该数据由Potter等人（2010年）汇编，并由哥伦比亚大学国际地球科学信息网络中心（CIESIN）分发。