Identification

Title

Soil profile and chemistry data in the Ankeniheny Zahamena forest corridor, Madagascar

Abstract

Data comprise soil profile (soil texture and pit description during fieldwork) and soil chemistry (bulk density, carbon content, carbon stock and organic carbon content obtained with thirteen carbon isotope analysis) from samples taken in the Ankeniheny Zahamena forest corridor, Madagascar. Data were collected as part of a project funded by the Ecosystem Services for Poverty Alleviation (ESPA) programme under work package 4 P4GES project, grant references: NE/K008692/1, NE/K010115/1, and NE/K010220-1. Full details about this dataset can be found at https://doi.org/10.5285/c3884aa0-b083-469d-8a0d-fdbbb79aff05

Resource type

dataset

Resource locator

https://data-package.ceh.ac.uk/data/c3884aa0-b083-469d-8a0d-fdbbb79aff05

name: Download the data

description: Download a copy of this data

function: download

https://data-package.ceh.ac.uk/sd/c3884aa0-b083-469d-8a0d-fdbbb79aff05.zip

name: Supporting information

description: Supporting information available to assist in re-use of this dataset

function: information

Unique resource identifier

code

https://catalogue.ceh.ac.uk/id/c3884aa0-b083-469d-8a0d-fdbbb79aff05

codeSpace

doi:

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

economy

environment

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

GeoNames

reference date

date type

creation

effective date

2006-01-01

Keyword set

keyword value

CAZ

ESPA

soil

carbon

delta 13C

bulk density

MIRS

Geographic location

West bounding longitude

43.191

East bounding longitude

50.484

North bounding latitude

-11.945

South bounding latitude

-25.69

Temporal reference

Temporal extent

Begin position

2013-06-01

End position

2017-02-28

Dataset reference date

date type

publication

effective date

2017-03-03

Frequency of update

asNeeded

Quality and validity

Lineage

Two methods were applied for the soil sampling. One for bulk density samples and the other for soil carbon sampling. Soil sampling by auger for soil carbon determination. It is done in the 4 subplots every 10 cm depth for 0 to 100 cm. That means 0-10 cm, 10-20 cm, 20-30 cm, 30-40 cm, 40-50 cm, 50-60 cm, 60-70 cm, 70-80 cm, 80-90 cm and 90-100 cm depth. Soil sampling by cylinder for bulk density sampling. The metallic cylinder used for this sampling has a diameter of 8.1cm. It was performed in the soil pits located in the 3 subplots (subplot n°1, n°2 and n°3), according to the depths: 0-10 cm, 10-20 cm, 20-30 cm, 50-60 cm and 80-90 cm. These samples are used for the bulk density measurement. Some samples, to estimate the moisture were also taken in addition to these samples to the cylinder. Soil profile description. This activity was conducted in the subplot 1 soil pit located in the center of each plot, with a depth of 1.30 m. Its objectives was to determine and describe the different soil horizons, know their colors (by using the soil color of Munsell), their textures and structures and root depth. The abundance of roots and porosity were also observed and recorded. Soil sample were labelled and sent to the sample preparation room, where they undergo the following preparations: - air drying at least 3 days - sieving through a sieve with 2 mm size - sieved sample collected in a plastic bag and weighed again - coarse soil (rocks) and coarse root fraction > 2 mm were also recovered in another bag and weighed - for classic soil analysis were done on the soil sample, it was ground to 200 microns Different type of analysis is used for the quantification of the soil organic carbon. Soil drying to determine the moisture. To determine the moisture of the soil samples, they are dried in stoves at 105°C during 48 hours. After, they are weighted and the moisture is obtained by the difference between the weight before and after the drying. Walkley & Black method. The Walkley-Black titration method is one of the classical methods for rapid analysis of soil organic carbon. The organic material is oxidized without external heating by a sulfuric potassium dichromate solution. It is considered that the heat of solution of H2SO4 (120° C) is sufficient to oxidize 77% of carbon. The excess dichromate is determined by Mohr's salt (NH4) 2 Fe (SO4) 2, 6 H2O. The data obtained using these chemical analysis served as calibration reference for further soil analysis using spectrometry. Mid Infra Red Spectroscopy (MIRS) soil analysis. The MIRS approach appeared to be a relatively recent soil analysis method. The principle is based on the absorption of infrared radiation by the organic matter. This absorption is related to the chemical composition of the samples. The measure of the light intensity absorbed at each wavelength leads to a characteristic spectrum of the studied product. Subsequently, it predicts the carbon organic contents by interpretation of the spectra. Carbon stable isotope analysis using 13C. A few soil samples were collected according their land use and carbon stock along the soil profile. These samples were sent to the Laboratoire de Biochimie et Physiologie Moléculaire des Plantes (LBMP montpelier) for stable isotope analysis.

Conformity

Conformity report

specification

title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

reference date

date type

publication

effective date

2010-12-08

degree

explanation

Data format

name of format

Comma-separated values (CSV)

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Acknowledgement of the Laboratoire des Radio Isotopes, Université d'Antananarivo is required for products derived from these data

Constraint set

Limitations on public access

If you reuse this data, you should cite: Razakamanarivo, H., Razafimbelo, T., Andriamananjara, A., Rianahary, A., Razafindrakoto, M., Harinirina, A. (2017). Soil profile and chemistry data in the Ankeniheny Zahamena forest corridor, Madagascar. NERC Environmental Information Data Centre https://doi.org/10.5285/c3884aa0-b083-469d-8a0d-fdbbb79aff05

custodian

Metadata on metadata

Metadata point of contact

organisation name

Environmental Information Data Centre

full postal address

Lancaster Environment Centre, Library Avenue, Bailrigg

Lancaster

LA1 4AP

email address

info@eidc.ac.uk

responsible party role

pointOfContact

Metadata date

2022-05-20T10:41:41

Metadata language

eng