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Abstract The dynamics of soil phosphorus (P) control its bioavailability. Yet it remains a challenge to quantify soil P dynamics. Here we developed a soil P dynamics (SPD) model. We then assimilated eight data sets of 426‐day changes in Hedley P fractions into the SPD model, to quantify the dynamics of six major P pools in eight soil samples that are representative of a wide type of soils. The performance of our SPD model was better for labile P, secondary mineral P, and occluded P than for nonoccluded organic P (Po) and primary mineral P. All parameters describing soil P dynamics were approximately constrained by the data sets. The average turnover rates were labile P 0.040 g g−1day−1, nonoccluded Po 0.051 g g−1day−1, secondary mineral P 0.023 g g−1day−1, primary mineral P 0.00088 g g−1day−1, occluded Po 0.0066 g g−1day−1, and occluded inorganic P 0.0065 g g−1day−1, in the greenhouse environment studied. Labile P was transferred on average more to nonoccluded Po (transfer coefficient of 0.42) and secondary mineral P (0.38) than to plants (0.20). Soil pH and organic C concentration were the key soil properties regulating the competition for P between plants and soil secondary minerals. The turnover rate of labile P was positively correlated with that of nonoccluded Po and secondary mineral P. The pool size of labile P was most sensitive to its turnover rate. Overall, we suggest data assimilation can contribute significantly to an improved understanding of soil P dynamics.
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This content will become publicly available on May 21, 2026
A highly selective C–H bond fluorination unlocks conformational reporting in a complex natural product derivative
In our fluorination of the antibiotic salinomycin and its simple derivatives, a chain of discoveries provided us a unique path to a selective result, unlocking low-noise conformational reporting by19F NMR in a widely studied medicinal scaffold.
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- Award ID(s):
- 2350270
- PAR ID:
- 10612088
- Publisher / Repository:
- Royal Society
- Date Published:
- Journal Name:
- Chemical Science
- Volume:
- 16
- Issue:
- 20
- ISSN:
- 2041-6520
- Page Range / eLocation ID:
- 8729 to 8734
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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