| 来源类型 | Article
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| 规范类型 | 其他
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| DOI | 10.5194/essd-2017-41
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| Global and regional phosphorus budgets in agricultural systems and their implications for phosphorus-use efficiency. |
| Lun F; Liu J; Ciais P; Nesme T; Chang J; Wang R; Goll D; Sardans J
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| 发表日期 | 2018
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| 出处 | Earth System Science Data Discussions 10 (1): 1-18
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| 出版年 | 2018
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| 语种 | 英语
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| 摘要 | The application of phosphorus (P) fertilizer to agricultural soils increased by 3.2 % annually from 2002 to 2010. We quantified in detail the P inputs and outputs of cropland and pasture, and the P fluxes through human and livestock consumers of agricultural products, at global, regional, and national scales from 2002 to 2010. Globally, half of the total P input (21.3 Tg P yr−1) into agricultural systems accumulated in agricultural soils during this period, with the rest lost to bodies of water through complex flows. Global P accumulation in agricultural soil increased from 2002 to 2010, despite decreases in 2008 and 2009, and the P accumulation occurred primarily in cropland. Despite the global increase of soil P, 32 % of the world's cropland and 43 % of the pasture had soil P deficits. Increasing soil P deficits were found for African cropland, versus increasing P accumulation in Eastern Asia. European and North American pasture had a soil P deficit because continuous removal of biomass P by grazing exceeded P inputs. International trade played a significant role in P redistribution among countries through the flows of P in fertilizer and food among countries. Based on country-scale budgets and trends we propose policy options to potentially mitigate regional P imbalances in agricultural soils, particularly by optimizing the use of phosphate fertilizer and recycling of waste P. The trend of increasing consumption of livestock products will require more P inputs to the agricultural system, implying a low P-use efficiency aggravating the P stocks scarcity in the future. The global and regional phosphorus budgets and their PUEs in agricultural systems is publicly available at https://doi.pangaea.de/10.1594/PANGAEA.875296. |
| 主题 | Ecosystems Services and Management (ESM)
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| URL | http://pure.iiasa.ac.at/id/eprint/14686/
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| 来源智库 | International Institute for Applied Systems Analysis (Austria)
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| 引用统计 |
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/131262
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推荐引用方式
GB/T 7714 |
Lun F,Liu J,Ciais P,et al. Global and regional phosphorus budgets in agricultural systems and their implications for phosphorus-use efficiency.. 2018.
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文件名：
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essd-10-1-2018.pdf
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格式：
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Adobe PDF
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