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首页> 外文期刊>Earth System Science Data Discussions >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：1860–2016年，世界草原上的氮富集增加和模式改变

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Abstract. Production and application to soils of manure excreta fromlivestock farming significantly perturb the global nutrient balance andresult in significant greenhouse gas emissions that warm the earth's climate.Despite much attention paid to synthetic nitrogen (N) fertilizer and manure Napplications to croplands, spatially explicit, continuous time-seriesdatasets of manure and fertilizer N inputs on pastures and rangelands arelacking. We developed three global gridded datasets at a resolution of0.5~(°)×0.5~(°) for the period 1860–2016 (i.e., annualmanure N deposition (by grazing animals) rate, synthetic N fertilizer and Nmanure application rates), by combining annual and 5arcmin spatial data onpastures and rangelands with country-level statistics on livestock manure,mineral and chemical fertilizers, and land use information for cropland andpermanent meadows and pastures. Based on the new data products, we estimatedthat total N inputs, the sum of manure N deposition, manure N application and fertilizer Napplication to pastures and rangelands, increased globally from 15 to101TgNyr~(?1) during 1860–2016. In particular during the period2000–2016, livestock manure N deposition accounted for 83% of the totalN inputs, whereas manure and fertilizer N application accounted 9% and8%, respectively. At the regional scale, hotspots of manure N depositionremained largely similar during the period 1860–2016 (i.e., southern Asia,Africa and South America); however, hotspots of manure and fertilizer Napplication 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 globaland regional N inputs in pastures and rangelands, improving the abilities ofecosystem and earth system models to investigate the global impacts of Nenrichment due to agriculture, in terms of associated greenhouse gasemissions and environmental sustainability issues. Datasets are available athttps://doi.org/10.1594/PANGAEA.892940.
机译：抽象。畜牧业粪便粪便的生产和施用严重干扰了全球养分平衡，并导致大量温室气体排放，使地球的气候变暖。尽管人们对合成氮肥和粪肥氮在耕地上的应用给予了极大关注，但在空间上是明确的，连续的时间牧场和牧场上肥料和肥料氮输入的系列数据集不足。在1860-2016年间，我们开发了三个全球栅格化数据集，分辨率为0.5〜（°）×0.5〜（°）（即，每年的粪便氮沉积量（通过放牧动物），合成氮肥和氮肥施用量）通过将牧场和牧场的年度和5arcmin空间数据与有关牲畜粪便，矿物和化肥的国家级统计数据以及农田和永久性草地和牧场的土地利用信息相结合。根据新的数据产品，我们估计1860-2016年间，全球总氮输入，牧场和牧场的肥料氮沉降，肥料氮和肥料氮的总和从15增加到101TgNyr〜（？1）。特别是在2000-2016年期间，牲畜粪便氮的沉积量占氮素总投入的83％，而粪便和化肥氮的施用量分别占9％和8％。在区域范围内，1860-2016年期间（即，南亚，非洲和南美）肥料氮沉积的热点保持大致相似。然而，在21世纪初，肥料和肥料氮的施用领域从欧洲转移到了南亚。新的三个全球数据集有助于填补牧场和牧场上全球和区域氮输入的先前数据空白，从而提高了生态系统和地球的能力。系统模型，根据相关的温室气体排放和环境可持续性问题，调查农业对富营养化的全球影响。数据集可在https://doi.org/10.1594/PANGAEA.892940上获得。

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