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首页> 外文期刊>Earth System Science Data >Increased nitrogen enrichment and shifted patterns in the world's grassland: 1860–2016
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Increased nitrogen enrichment and shifted patterns in the world's grassland: 1860–2016

机译：增加世界草原的氮浓缩和转移模式：1860 - 2016年

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Production and application to soils of manure excreta from livestock farming significantly perturb the global nutrient balance and result in significant greenhouse gas emissions that warm the earth's climate. Despite much attention paid to synthetic nitrogen (N) fertilizer and manure N applications to croplands, spatially explicit, continuous time-series datasets of manure and fertilizer N inputs on pastures and rangelands are lacking. We developed three global gridded datasets at a resolution of 0.5° × 0.5° for the period 1860–2016 (i.e., annual manure N deposition (by grazing animals) rate, synthetic N fertilizer and N manure application rates), by combining annual and 5 arcmin spatial data on pastures and rangelands with country-level statistics on livestock manure, mineral and chemical fertilizers, and land use information for cropland and permanent meadows and pastures. Based on the new data products, we estimated that total N inputs, the sum of manure N deposition, manure N application and fertilizer N application to pastures and rangelands, increased globally from 15 to 101 Tg N yr?1 during 1860–2016. In particular during the period 2000–2016, livestock manure N deposition accounted for 83 % of the total N inputs, whereas manure and fertilizer N application accounted 9 % and 8 %, respectively. At the regional scale, hotspots of manure N deposition remained largely similar during the period 1860–2016 (i.e., southern Asia, Africa and South America); however, hotspots of manure and fertilizer N application shifted from Europe to southern Asia in the early 21st century. The new three global datasets contribute to the filling of the previous data gaps of global and regional N inputs in pastures and rangelands, improving the abilities of ecosystem and earth system models to investigate the global impacts of N enrichment due to agriculture, in terms of associated greenhouse gas emissions and environmental sustainability issues. Datasets are available at https://doi.org/10.1594/PANGAEA.892940.
机译：从牲畜耕种的粪便排泄物土壤的生产和应用显着扰乱了全球养分平衡，并导致了大量的温室气体排放，使地球的气候变暖。尽管对合成氮（N）肥料和粪便N应用于农田的肥料和粪便，但缺乏空间明确的，粪便和牧场的肥料和肥料的连续的连续时间序列数据集。我们通过组合年度和5期间，在1860 - 2016年期间开发了三个全球网格数据集0.5°×0.5°（即，年粪便N沉积（通过放牧）速率，合成肥料和N粪便施用率）。 ArcMin关于牧场和牧场的空间数据，具有畜牧粪，矿产和化学肥料的国家级统计数据，以及农田和永久草地和牧场的土地利用信息。基于新的数据产品，我们估计总N个输入，粪便N沉积，粪便N沉积和施肥于牧场和牧场的施用量，在1860 - 2016年期间，全球增加到15至101 Tg n Yr？1。特别是在2000 - 2016年期间，牲畜粪便N沉积占总N个输入的83％，而粪肥和肥料N申请分别占9％和8％。在区域规模，在1860 - 2016年（即，南亚，非洲和南美洲）期间，粪便N沉积的热点仍然在很大程度上相似;然而，粪肥和肥料的热点N应用在21世纪初从欧洲转移到南亚。新的三个全球数据集有助于填写牧场和牧场的全球和区域N投入的先前数据差距，从而提高生态系统和地球系统模型的能力，以调查N的全球影响因农业而导致的N浓缩的影响温室气体排放和环境可持续性问题。数据集可在https://doi.org/10.1594/pangaea.892940中获得。

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