Use of cadastral data in
the Rural Support Service
Juris Griņevičs
Rural Support Service
Deputy director of the Control department
Head of Land parcel register division
Valsts zemes dienesta 20 gadu jubilejas konference
„Kadastra izaicinājumi digitālajā laikmetā”
08.05.2013
Rural Support Service
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The Rural Support Service is responsible for implementation of a unified state and
European Union (EU) support policy in the sector of agriculture, forestry, fisheries
and rural development; it supervises compliance of the sector with the laws and
regulations and fulfills other functions connected with agriculture and
implementation of rural support policy
The Rural Support Service is a state administration institution. It was established
on 1 January 2000, and operates under the supervision of the Ministry of
Agriculture in accordance with the Law on Rural Support Service
In the framework of its competence, the Rural Support Service administers the EU
and state support for rural areas, agriculture, forestry and fisheries:
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Accepts and assesses project applications;
Makes decisions on allocation or rejecting of financing;
Keeps records of the granted financing and controls the use of it.
The Rural Support Service consists of the central office located in Riga and of
territorial structural units – 9 regional agricultural departments
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Land parcel identification system
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Land parcel identification system (LPIS) was developed in the
framework of the Integrated Administration and Control System
(IACS)
IACS is used to administer the EU and national direct payments
including less favored areas (LFA) and the support of AEM
In order to obtain timely and accurate information of the
agricultural land, its area and also to be able to identify those
areas spatially, LPIS is set up as a geographical information system
(GIS)
LPIS production environment is based on ESRI ArcGIS 10 software
products
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LPIS technologies
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Spatial data is maintained in a central Oracle 11g database using
ArcSDE connection
Data backups are performed (once a week full data copy, daily
incremental backup) and editing history of important data is
maintained into source layers
For publication of data on the intranet ArcGIS Server REST-driven
applications are used, but for public web the ArcIMS solution is
used.
Users have ArcGIS Desktop licenses (ArcInfo, ArcEditor and
ArcView)
Also specialized applications developed and being used in ArcGIS
Desktop environment for more convenient everyday work
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Spatial data available
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Reference parcel layers (for editing, with history, with IACS data)
Control with remote sensing (CwRS) parcel layers starting from 2005
4 cycles of orthophoto maps (1994-1999, 2003-2005, 2007-2008, 20102011) from Latvian Geospatial Information Agency (LGIA)
Topographical map 1: 10 000 from LGIA
Cadastral data (2003-2013) from State Land Service
VHR imagery for CwRS campaigns (2005-2012) from European Commission
GNSS measurements from on the spot controls
Biologically valued grasslands
Annual agricultural land survey results
Forest data from State Forest Service
Afforested land from Latvia’s State Forests
Agricultural land drainage data
Data from Nature Conservation Bureau for cross-compliance requirements
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Main map services
Public Web map
http://karte.lad.gov.lv
RSS intranet map
http://gis.lad.gov.lv/lrgis
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Availability of Cadastral data
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We are using Cadastre IS data since year 2003 then we carried out
RSS client pre-registration process (to identify owners and users of
agricultural land)
In the past land boundary plan copies (‘paper data’) there
submitted by farmers to get agricultural subsidies for cultivated
land
Now we are receiving Cadastral data (graphical and textual part)
twice a year (February and August)
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Use of Cadastral data
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To locate spatially the place and information by cadastre number
To print individual maps for RSS clients by reference parcel
numbers and also by cadastre numbers
For splitting of large reference parcels with measured cadastral
boundaries if it is necessary
Use of cadastral data in property rights clearance
Annual agricultural land survey is based on cadastral data
Cadastral information is used in aided project evaluation
Often use marker boards in order to visually identify the land
survey boundaries and easements, which help distinguish the
tracks in the meadows from the actual roads
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Graphical/textual part of Cadastre
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SLS is now maintaining separately graphical part of Cadastre and
textual part of Cadastre. Linking these both parts of data there is a
risk that some of the data may be 'lost' if the identifiers do not
match. Especially in cases where the text data and graphic part is
exported on various dates
Graphical part of Cadastre consists of points (cadastre number),
lines (property borderlines) and polygons (also borderlines). To use
the data in practice we have to regenerate all boundary data as
lines (for map symbology purposes) and also to the polygons with
the cadastre number as main attribute to them (to identify the
location, for printing the map)
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Unmeasured cadastral boundaries
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The situation with unmeasured cadastral boundaries in the
countryside is gradually improving (see picture), but still there are
a lot of cases then communication with our clients is very difficult
because of these unmeasured boundaries of property
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Types of land use in explications
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It is impossible to visually identify land use areas, which we can
read in explication of cadastral data (textual part)
Land use areas often contain outdated, incorrect information
Frequently in explication as
OTHER_LANDS we can see
forested areas, agricultural
land – areas that should be
calculated into other
already defined data fields
(see picture)
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Suggestions
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Go for the Cadastral GIS, where the spatial and attribute information
is updated at the same time (no more separate graphical and textual
parts)
Update and refine land
use information of
cadastral data explications
Be spatially more accessible
to the public sector (let
them use your resources to
publish their property data)
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Thank you for your attention!