Andreas Schuck

Metadata schema, keywords and guidelines

NEFIS WP5 Meeting 15-16 November, 2005Hamburg, Germany

WP 2 deliverables

D3: Metadata standards and

keyword lists

D5: User guidelines for the

data providers

Metadata Schema (D3)

Tasks: Preparation of a metadata standard based on Dublin Core

Metadata Initiative (DCMI) Investigating the need to extend the basic DCMI elements

structure

Aim: Test a NEFIS metadata schema and its usability to prepare

metadata for the agreed NEFIS data sets Evaluate through questionnaires its applicability to the NEFIS

data sets

NEFIS metadata schema (Part 1)

Element: ’Subject’ refinements NEFISthemes and NEFISterms

NEFIS theme Keyword list Number of main terms 1. inventory (inc. growth & yield) NEFIS_Inventory.xls 212 2. health NEFIS_health_draft1.doc 280 3. silviculture (inc. forest nurseries) NEFIS_Silviculture.xls 458 4. vegetation (or forest or land) types (inc. soil types) NEFIS_vegetationtypes_draft1.doc 512 5. non-wood goods and benefits NEFIS_nonwood_forest_goods_benefits_draft1.doc 27 6. forest environment and ecology (inc. biodiversity) 7. operations NEFIS_operations_draft1.doc 87 8. fire NEFIS_fire_draft1.doc 47 9. economics 10. forest products and trade flows NEFIS_Forest_products.xls 358 11. labour 12. rural development NEFIS_ruraldevelopment_draft1.doc 63 13. policy 14. research 15. tree physiology and genetics (inc. tree breeding) 16. wood fuel 17. forest institutions 18. forest maps and geo-referenced data NEFIS_Maps_&_georeferenced_data.xls 119 19. field experiments NEFIS_Field_experiments.xls 281 20. organism name See maintained list of names – e.g. GBIF http://www.gbif.org/

NEFISterms – Forest Inventory (extract)

ID English Plural form Syn2 Syn3Relation 1-

FDC

Relation 2 -IUFRO categories

Relation 3 - CABI BT En-Def

13071 basal area 5212.3.1. Stocking: Tree mensuration

1) Of a tree: the area (in square metres) of the cross section of the stem, usually at -> breast height;2) of a forest, stand or forest type: the area (in square metres per hectare) of the total cross section of all trees at -> breast height.

biomass production

31199 branch branches branchiness 5362.3.1. Stocking: Tree stems

Qualitative description or specification of the amount and size of branches on a stem.

13784 branchwood2.3.1. Stocking: Tree wood Wood or biomass contained in the branches of a tree.

13799 breast height 5222.3.1. Stocking: Tree

The standard height, 1.30 m (4ft 3in) above ground level, at which the -> diameter of a standing tree is measured and from which measurement of -> basal area is derived.

broadleaved broadleafangiosperm tree 175

2.3.1. Stocking: Tree

forests / TBFRA All trees classified botanically as Angiospermae.

20638 calliper callipers 5292.3.1. Stocking: Tree instruments

An instrument for determining tree or log diameters, usually by measurement of their rectangular projection on a straight graduated rule via two arms at right angles to (and one of them sliding along) the rule itself.

13846 canopy 53

2.3.2. Stocking: Stand

stand characteristics

The more or less continuous cover of branches and foliage formed collectively by the crowns of adjacent trees and other woody growth.

18829 canopy density 533

2.3.2. Stocking: Stand

stand characteristics

The completeness of tree canopy of a stand, often expressed as a decimal coefficient, taking closed canopy as unity.

13932 clearcut (area)clearfell (area) 323

3.2.3. Harvesting/Utilisation

An area of forest land from which all merchantable trees have recently been harvested.

Element: ‘Subject’refinement ‘Nominated Terms’

Idea: avenue to submit terms not found in the NEFIS controlled

vocabulary. Suggested approach: terms submitted will be subject to

editorial review and, if suitable, can be added to the NEFIS

controlled vocabulary list.

NEFIS metadata schema (Part 1)

Element: ’Description’ refinement ’Quality Report’

Need: clearly identifying the quality of an information resource was given high priority by NEFIS partners

Approach: Descriptive text: from resource itself or created by the person creating the metadata. The text can include:

information on mandate for data collection availability of data collection and processing guidelines (e.g. reference to website or document) definitions (e.g. a reference to a website or other document) type of sampling methods frequency of data collection explanatory notes

refinement ’Quality Report’ (cont.)

Controlled set of terms to

capture crucial elements of

quality (example: forest

inventory)

Terms• Availability standard error• Standard error• Re-sampling • Re-sampling percentage• Total sample size• Sampling unit

Element: ’Type’

Encoding Scheme DCMI type

vocabulary:

NEFIS addition:

dataset (georeferenced)

DCMI Type vocabulary

CollectionDatasetEventImageInteractiveResourceServiceSoftwareSoundTextPhysicalObjectStillImageMovingImage

NEFIS metadata schema (Part 2)

Element: ’Format’refinement ’reference system’

Reference system: proposed under

element refinement ‘medium’ for in depth

details on geo-referenced file extensions

NOTE: For further processing geo-referenced

dataset(s) by a user information on name, datum,

projection etc. is important

Recommendation: adopt the section

‘reference system’ from EEA document:

EEA metadata form for spatial datasets & EEA

metadata standard for geographic information

(EEA-MSGI v.1.1), Version 1.2 (08 October 2003)

Reference System

• ReferenceSystemName• DatumName• EllipsoidName• EllipsoidSemi-majoraxis• EllipsoidAxisUnits• EllipsoidFlatteningRatio• ProjectionName• ProjectionZone• ProjectionStandardParallel• ProjectionLongitudeofCentralMeridian• ProjectionLatitudeofProjectionOrigin• ProjectionFalseEasting• ProjectionFalseNorthing• ProjectionLongitudeofProjectionCentre• ProjectionLatitudeofProjectionCentre

NEFIS metadata schema (Part 2)

Element: ’Coverage’refinement ’point and box’

Several methods are available to indicate a place e.g.:

(1) name, (2) geocode, (3) coordinates of a point, (4) rectangular box in two or three dimensions

Identifying a place - the DCMI Box scheme

A place is identified by considering a minimal rectangular box which fully encloses the place and whose faces are aligned parallel with the axes of an identified cartesian coordinate system.

NOTE: Scales of a ‘Box’ can vary. Examples:Europe, region (Umbria), geographic features (Pyrenees), local scale (Wienerwald, forest district, forest stand)

NEFIS metadata schema (Part 2)

Element: ’Rights’refinement ’access rights’

Information about who can access a resource or an indication of its security status

accessRights

PublicLimitedRestrictedRestricted – need to be a memberRestricted – need to register as a user

NEFIS metadata schema (Part 2)

Element: Audience

Audience: A class of entity for whom the resource is intended or useful

Mediator: A class of entity that mediates access to the resource and for whom the resource is intended or useful

two basic classes:(1) an ultimate beneficiary of the resource (2) an entity that mediates access to the

resource (refinement ‘mediator’)

Descriptor

• business• consultants• donor organizations• educators• environmental groups• financial institutions• forest landowners• forest managers• forestry associations• government• government agencies• media• non-governmental organizations• policy-makers• public• researchers• students

D5: User guidelines for the data providers

NEFIS metadata guidelines elaborated Guidance document for providing actual data produced Metadata entry form elaborated based on NEFIS metadata schema

Thank you for your attention

Italy: Import of roundwood from EU25 1995-2001