Centennial deforestation impacts on soil phosphorus cycling in the Amazon rainforest

Deforestation of tropical rainforests is a major land use change that alters terrestrial biogeochemical cycling at local to global scales. Deforestation and subsequent reforestation are likely to impact soil phosphorus (P) cycling, which in P-limited ecosystems such as in the Amazon basin has implications for long-term land use change and productivity. We used a 100-year observational chronosequence of primary forest conversion to pasture, as well as a 13-year-old secondary forest, to test land use change and duration effects on soil P dynamics in the Amazon basin. By combining sequential extraction and P K-edge X-ray absorption near edge structure (XANES) spectroscopy with soil phosphatase assays, we assessed pools and process rates of P cycling in surface soils. Deforestation caused increases in total P (135-398 mg kg-1), total organic P (Po) (19-168 mg kg-1), and total inorganic P (Pi) (30-113 mg kg-1) fractions in surface soils with pasture age, with concomitant increases in Pi frac..., The methods of this dataset can be found in the related article., , # Centennial deforestation impacts on soil phosphorus cycling in the Amazon rainforest

We used a 100-year observational chronosequence of primary forest conversion to pasture, as well as a 13-year-old secondary forest, to test land use change and duration effects on soil P dynamics in the Amazon basin. By combining sequential extraction and P K-edge X-ray absorption near edge structure (XANES) spectroscopy with soil phosphatase assays, we assessed pools and process rates of P cycling in surface soils.

## Description of the data and file structure

All experiment results are included in the uploaded Excel file. Data description can be found in the corresponding manuscript once it's published. Basically, the sampling area has served as a model for studying forest-to-pasture conversion due to staggered times of primary forest conversion to pasture over the last century, which enables characterizing long-term changes in soil P cycling in the present study. We carefully selected specific...