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Title: Phosphorus in agricultural soils: drivers of its distribution at the global scale

Journal Article · · Global Change Biology
DOI:https://doi.org/10.1111/gcb.13618· OSTI ID:1408047
ORCiD logo [1];  [1];  [2];  [3];  [3]; ORCiD logo [4];  [1];  [5];  [6];  [7];  [8];  [9];  [1];  [1]
  1. ISPA, Villenave d'Ornon (France)
  2. Univ. Paris-Saclay, Jouy-en-Josas (France)
  3. Utrecht Univ., Utrecht (The Netherlands)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Univ. of Maryland, College Park, MD (United States)
  6. Univ. Catholique de Louvain, Louvain-la-Neuve (Belgium)
  7. Univ. Paris-Saclay, Gif-sur-Yvette (France)
  8. Univ. Paris-Saclay, Gif-sur-Yvette (France); Peking Univ., Beijing (China)
  9. CNRS/Meteo-France, Toulouse (France)

Phosphorus (P) availability in soils limits crop yields in many regions of the world, while excess of soil P triggers aquatic eutrophication in other regions. Numerous processes drive the global spatial distribution of P in agricultural soils, but their relative roles remain unclear. Here, we combined several global datasets describing these drivers with a soil P dynamics model to simulate the distribution of P in agricultural soils and to assess the contributions of the different drivers at the global scale. We analyzed both the labile inorganic P (PILAB), a proxy of the pool involved in plant nutrition and the total soil P (PTOT). We found that the soil biogeochemical background (BIOG) and farming practices (FARM) were the main drivers of the spatial variability in cropland soil P content but that their contribution varied between PTOT vs PILAB. Indeed, 97% of the PTOT spatial variability could be explained by BIOG, while BIOG and FARM explained 41% and 58% of PILAB spatial variability, respectively. Other drivers such as climate, soil erosion, atmospheric P deposition and soil buffering capacity made only very small contribution. Lastly, our study is a promising approach to investigate the potential effect of P as a limiting factor for agricultural ecosystems and for global food production. Additionally, we quantified the anthropogenic perturbation of P cycle and demonstrated how the different drivers are combined to explain the global distribution of agricultural soil P.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1408047
Journal Information:
Global Change Biology, Vol. 23, Issue 8; ISSN 1354-1013
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 60 works
Citation information provided by
Web of Science

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Spatiotemporal dynamics of soil phosphorus and crop uptake in global cropland during the 20th century journal January 2017
Combining spectroscopic and isotopic techniques gives a dynamic view of phosphorus cycling in soil text January 2018
The shift of phosphorus transfers in global fisheries and aquaculture journal January 2020
Silicon increases the phosphorus availability of Arctic soils text January 2019
Phytomining to re-establish phosphorus-poor soil conditions for nature restoration on former agricultural land journal March 2019
Combining spectroscopic and isotopic techniques gives a dynamic view of phosphorus cycling in soil journal August 2018
A global dataset of plant available and unavailable phosphorus in natural soils derived by Hedley method journal August 2018
Changes in soil phosphorus and its influencing factors following afforestation in Northern China journal July 2019
The effect of organic acids and alcohols on precipitation of phosphate using calcined seashell powder journal October 2019
Phosphorus mining efficiency declines with decreasing soil P concentration and varies across crop species text January 2018
Silicon increases the phosphorus availability of Arctic soils journal January 2019
Balancing the Global Distribution of Phosphorus With a View Toward Sustainability and Equity journal June 2018
Phosphorus mining efficiency declines with decreasing soil P concentration and varies across crop species journal June 2018
Global Opportunities to Increase Agricultural Independence Through Phosphorus Recycling journal April 2019
Phosphorus mining efficiency declines with decreasing soil P concentration and varies across crop species text January 2018
Mariculture: A global analysis of production trends since 1950 journal May 2013