The ORNL DAAC is pleased to announce the release of the data set A Global Database of Soil Phosphorus Compiled from Studies Using Hedley Fractionation prepared by X. Yang, W.M. Post, P.R. Thornton, and A. Jain.
This data set provides concentrations of soil phosphorus (P) compiled from the peer-reviewed literature that cited the Hedley fractionation method (Hedley and Stewart, 1982). This database contains estimates of different forms of naturally occurring soil phosphorus, including labile inorganic P, organic P, occluded P, secondary mineral P, apatite P, and total P, based on the analyses of the various Hedley soil fractions. Measurement data are provided for studies published from 1985 through 2010.
The ORNL DAAC is one of twelve NASA-funded Earth Observing System Data and Information System (EOSDIS) Distributed Active Archive Centers (DAACs) and is responsible for archiving and distributing terrestrial ecology and biogeochemical dynamics data.