Global distribution of soil phosphorus retention potential
Limited availability of P in soils to crops may be due to deficiency and/or severe P retention. Earlier studies that drew on large soil profile databases have indicated that it is not (yet) feasible to present meaningful values for “plant-available” soil P, obtained according to comparable analytical methods, that may be linked to soil geographical databases derived from 1:5 million scale FAO Digital Soil Map of the World, such as the 5 x 5 arc-minute version of the ISRIC-WISE database. Therefore, an alternative solution for studying possible crop responses to fertilizer-P applied to soils, at a broad scale, was sought. The approach described in this report considers the inherent capacity of soils to retain phosphorus (P retention), in various forms. Main controlling factors of P retention processes, at the broad scale under consideration, are considered to be pH, soil mineralogy, and clay content. First, derived values for these properties were used to rate the inferred capacity for P retention of the component soil units of each map unit (or grid cell) using four classes (i.e., Low, Moderate, High, and Very High). Subsequently, the overall soil phosphorus retention potential was assessed for each mapping unit, taking into account the P-ratings and relative proportion of each component soil unit. Each P retention class has been assigned to a likely fertilizer P recovery fraction, derived from the literature, thereby permitting spatially more detailed, integrated model-based studies of environmental sustainability and agricultural production at the global and continental level (< 1:5 million). Nonetheless, uncertainties remain high; the present analysis provides an approximation of world soil phosphorus retention potential.
INSPIRE
Identification
- File identifier
- 36cb1f3a-c0fe-4f99-ba5f-a9f2b4494431 XML
- Hierarchy level
- Dataset
Online resource
- Protocol
- WWW:DOWNLOAD-1.0-ftp--download
- Protocol
- WWW:LINK-1.0-http--related
- Protocol
- WWW:LINK-1.0-http--related
Resource identifier
- code
- 36cb1f3a-c0fe-4f99-ba5f-a9f2b4494431
- Metadata language
- English
- Spatial representation type
- Vector
Encoding
- Format
- zip
Projection
- code
- 4326
Classification of data and services
- Topic category
-
- Geoscientific information
Classification of data and services
Coupled resource
Coupled resource
Classification of data and services
Coupled resource
Coupled resource
Keywords
- Stratum
-
- Soil science
- Region
-
- Global
Other keywords
- Theme
-
- phosphorus
- nutrients
Geographic coverage
N
S
E
W
Temporal reference
Temporal extent
- Begin
- 2001-06-01
- End
- 2011-06-01
Temporal extent
- Date (Publication)
- 2011-06-01
Quality and validity
- Lineage
- See documentation: https://isric.org/sites/default/files/isric_report_2011_06.pdf
- Denominator
- 5000000
Conformity
Conformity
Conformity
Conformity
Conformity
Conformity
Restrictions on access and use
- Access constraints
- Attribution 3.0 International (CC BY 3.0)
Responsible organization (s)
Contact for the resource
- Organisation name
- ISRIC - World Soil Information
- niels.batjes@isric.org
Responsible organization (s)
Contact for the resource
- Organisation name
- ISRIC - World Soil Information
- niels.batjes@isric.org
Metadata information
Contact for the metadata
- Organisation name
- ISRIC - World Soil Information
- Date stamp
- 2021-07-14T11:51:42
- Metadata language
- English
- Character set
- UTF8
SDS
Conformance class 1: invocable
Access Point URL
Endpoint URL
Technical specification
Conformance class 2: interoperable
Access constraints
Limitation
Use constraints
Limitation
Responsible custodian
Contact for the resource
Overviews
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available