Identification

Title

Gro for Good Soil Data Kwale County, Kenya (NERC grant NE/M008894/1)

Abstract

The data set contains Soil Data used in the Gro for GooD Project in Kwale, Kenya based on KENSOTER database and soil survey in study area. The KENSOTER dataset, specific for Kenya, was compiled by the Kenya Soil Survey (KSS) and ISRIC and released in 2006 where ISRIC plays a lead role in methodology development and programme implementation (http://www.isric.org/projects/soil-and-terrain-soter-database-programme). The dataset includes over 600 soil components, including synthetic profiles, which have been derived from soil survey reports and expert knowledge. The second version of the dataset which has been made available includes additional soil profile database and is also used for the assessment of soil carbon stocks. The gaps in the measured soil profile data have been filled using a step-wise procedure which includes three main stages: (1) collate additional measured soil analytical data where available; (2) fill gaps using expert knowledge and common sense; (3) fill the remaining gaps using a scheme of taxotransfer rules. Parameter estimates are presented by soil unit for fixed depth intervals of 0.2 m to 1 m depth for: organic carbon, total nitrogen, pH(H2O), CECsoil, CECclay, base saturation, effective CEC, aluminium saturation, CaCO3 content, gypsum content, exchangeable sodium percentage (ESP), electrical conductivity of saturated paste (ECe), bulk density, content of sand, silt and clay, content of coarse fragments, and available water capacity. The data have recently been used for the Green Water Credit (GWC) programme in the Upper Tana River Valley. This dataset was prepared for the Gro for GooD project by Mike Thomas, Rural Focus Ltd., Kenya; John Gathenya, JKUAT, Kenya. Gro for GooD: Groundwater Risk Management for Growth and Development

Resource type

dataset

Resource locator

http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item104449

function: information

http://reshare.ukdataservice.ac.uk/853667/

function: information

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13607230

codeSpace

Dataset language

eng

Spatial reference system

authority code

OGP

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::21037

Additional information source

KENSOTER database http://data.isric.org/geonetwork/srv/eng/catalog.search#/metadata/73e27136-9efe-49e4-af35-fd98b841d467

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Soils

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

38.4500

East bounding longitude

39.7000

North bounding latitude

-3.5500

South bounding latitude

-4.6700

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

KE

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

KEN

Extent group

authority code

title

reference date

date type

creation

effective date

1979

code identifying the extent

KENYA [id=687000]

Temporal reference

Temporal extent

Begin position

2015

End position

2016

Dataset reference date

date type

creation

effective date

2017

Frequency of update

notApplicable

Quality and validity

Lineage

The harmonized data set was derived from Soil and Terrain Database for Kenya (KENSOTER V2), at scale 1:1M, compiled by the Kenya Soil Survey and ISRIC. The parameter estimates are presented by soil unit for fixed depth intervals of 0.2 m to 1 m depth for 20 parameter attributes which have been identified as being useful for agro-ecological zoning, land evaluation, crop growth simulation, modelling of soil carbon stocks and change, and analyses of global environmental change. The current parameters values were are best estimates based on the current selection of soil profiles and data clustering procedure. Results are presented as summary files and can be linked to SOTER map for Kenya through the unique SOTER-unit code. Soil field survey was undertaken within study area in 2016 and results compared with the SOTER parameter estimates as satisfactory to build confidence on the data sets.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

false

explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Responsible organisations

Responsible party

contact position

School of Geography and the Environment

organisation name

University of Oxford

full postal address

Oxford

OX1 3QY

email address

not available

responsible party role

principalInvestigator

Responsible party

contact position

Smith School of Enterprise and the Environment

organisation name

University of Oxford

full postal address

Oxford

OX1 3QY

email address

not available

responsible party role

pointOfContact

Responsible party

organisation name

Rural Focus Ltd

full postal address

P.O. Box 1011-10400

Nanyuki

Kenya

email address

not available

responsible party role

originator

Responsible party

contact position

Department of Soil, Water and Environmental Engineering

organisation name

Jomo Kenyatta University of Agriculture and Technology

full postal address

Nairobi

email address

not available

responsible party role

originator

Metadata on metadata

Metadata point of contact

contact position

NERC-BGS Scientific Officer

organisation name

British Geological Survey

full postal address

Environmental Science Centre,Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

+44 115 936 3100 Ex:3388

email address

jhb@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2020-02-17

Metadata language