WoSIS latest - pH KCl

A measure of the acidity or alkalinity in soils, defined as the negative logarithm (base 10) of the activity of hydronium ions (H+) in a KCl solution, as specified in the analytical method descriptions. ISRIC is developing a centralized and user–focused server database, known as ISRIC World Soil Information Service (WoSIS). The aims are to: • Safeguard world soil data "as is" • Share soil point (i.e. profile) data upon their standardization, and ultimately harmonization • Provide quality-assessed, geo-referenced soil data for a growing range of environmental applications (e.g. SoilGrids250m). At present, wosis_latest contains standardized data for 217,000 profiles. The number of measured data for each property varies between profiles and with depth, generally depending on the purpose of the initial studies. Further, in most source data sets, there are fewer data for soil physical as opposed to soil chemical attributes and there are fewer measurements for deeper than for superficial horizons. Generally, limited quality information is associated with the various source data. Further information is provided in https://doi.org/10.5194/essd-12-299-2020 and (https://www.isric.org/sites/default/files/WOSISprocedureManual_2020nov17web.pdf.

soil soil chemicophysical properties soil fertility soil water conservation pH soil profiles Soil science Global