DOI: 10.1002/2014GB004842
Scopus记录号: 2-s2.0-84904273107
论文题名: Contribution of anthropogenic phosphorus to agricultural soil fertility and food production
作者: Ringeval B ; , Nowak B ; , Nesme T ; , Delmas M ; , Pellerin S
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2014
卷: 28, 期: 7 起始页码: 743
结束页码: 756
语种: 英语
英文关键词: anthropogenic nutrients
; phosphorus cycle
; soil fertility
Scopus关键词: Agriculture
; Biochemistry
; Budget control
; Lakes
; Phosphorus
; Soils
; Agricultural intensification
; Biogeochemical modeling
; Chemical fertilizers
; International database
; Optimization procedures
; Phosphorus cycles
; Quantitative estimation
; Soil fertility
; Fertilizers
; agricultural intensification
; bioavailability
; food production
; intensive agriculture
; nutrition
; phosphate rock
; phosphorus
; plant
; soil fertility
; soil horizon
; temporal evolution
; France
英文摘要: Agricultural intensification over the last few decades has been accompanied by the extensive use of anthropogenic phosphorus (P) derived from mined phosphate rock. Given the increasing scarcity of P resources, accurate estimates of the reliance of agriculture on anthropogenic P are required. Here we propose a modeling approach for assessing the contribution of anthropogenic P to agricultural soil fertility and food production. We performed computations at country level, and France was chosen as a typical western European country with intensive agriculture. Four soil P pools were identified based on their bioavailability (labile versus stable) and origin (anthropogenic versus natural). Pool evolution between 1948 and 2009 was estimated by combining international databases and a simple biogeochemical model. An optimization procedure demonstrated the necessity of representing a stable P pool capable of replenishing the labile pool within 14 to 33 years in order to match country-scale observations. Mean simulated P pool sizes for 2009 (0-35 cm soil horizon) were 146, 616, 31, and 156 kgP/ha for natural stable, anthropogenic stable, natural labile, and anthropogenic labile pools, respectively. We found that, on average, 82% (min-max: 68-91%) of soil P (sum of labile and above defined stable) in that year was anthropogenic. The temporal evolution of this contribution is directly related to the integral of chemical fertilizer use over time, starting from 1948. The contribution of anthropogenic P to food production was similar at 84% (min-max: 72-91%), which is greater than budget-based estimates (~50-60%) commonly reported in the literature. By focusing on soil fertility and food production, this study provides a quantitative estimation of human perturbations of the P cycle in agroecosystems. Key Points Anthropogenic P contribution to French agricultural soil fertility is assessed In 2009, 68-91% of soil P involved in plant nutrition was anthropogenic This is related to the integral of chemical fertilizer use over time ©2014. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77478
Appears in Collections: 气候变化事实与影响
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作者单位: INRA, UMR 1391 ISPA, Villenave d'Ornon, France; Bordeaux Sciences Agro, University of Bordeaux, UMR 1391 ISPA, Gradignan, France; McGill School of Environment, McGill University, Montreal, QC, Canada; Montpellier SupAgro, UMR LISAH, Montpellier, France
Recommended Citation:
Ringeval B,, Nowak B,, Nesme T,et al. Contribution of anthropogenic phosphorus to agricultural soil fertility and food production[J]. Global Biogeochemical Cycles,2014-01-01,28(7)