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.
Haygarth, P. M.
中科院分区:
综合性期刊2区
文献类型:
--
作者:
McDowell, R. W.;Noble, A.;Pletnyakov, P.;Haygarth, P. M.

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土壤磷驱动着粮食生产,这是养活不断增长的全球人口所必需的。然而,在全球范围内的植物可用磷库存的知识是穷人,但需要更好地匹配磷肥供应作物的需求。我们整理、检查、转换和过滤了一个C语言的数据库。575,000个土壤样本。33,000个土壤样品的土壤Olsen磷浓度。这些数据代表了全球范围内植物有效磷的最新免费数据库。我们用这些数据来推导出一个模型(R2 = 0.54)的表土奥尔森磷浓度,结合容重的数据预测的分布和全球库存的土壤奥尔森磷。我们希望这些数据不仅可以用来显示植物有效磷应该增加的地方,而且可以用来降低肥料磷的使用效率,并尽量减少磷的损失和水质退化。
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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