A Global Database of Soil Plant Available Phosphorus.
A Global Database of Soil Plant Available Phosphorus.
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DOI:
10.1038/s41597-023-02022-4
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发表时间:
2023-03-07
期刊:
影响因子:
9.8
通讯作者:
Haygarth, P. M.
中科院分区:
文献类型:
--
作者:
McDowell, R. W.;Noble, A.;Pletnyakov, P.;Haygarth, P. M.
Soil phosphorus drives food production that is needed to feed a growing global population. However, knowledge of plant available phosphorus stocks at a global scale is poor but needed to better match phosphorus fertiliser supply to crop demand. We collated, checked, converted, and filtered a database of c. 575,000 soil samples to c. 33,000 soil samples of soil Olsen phosphorus concentrations. These data represent the most up-to-date repository of freely available data for plant available phosphorus at a global scale. We used these data to derive a model (R2 = 0.54) of topsoil Olsen phosphorus concentrations that when combined with data on bulk density predicted the distribution and global stock of soil Olsen phosphorus. We expect that these data can be used to not only show where plant available P should be boosted, but also where it can be drawn down to make more efficient use of fertiliser phosphorus and to minimise likely phosphorus loss and degradation of water quality.
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