AARHUS UNIVERSITET. Til Landbrugsstyrelsen. Levering på bestillingen Request for data on agricultural land parcel size

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1 AARHUS UNIVERSITET DCA - NATIONALT CENTER FOR FØDEVARER OG JORDBRUG Til Landbrugsstyrelsen Levering på bestillingen Request for data on agricultural land parcel size Landbrugsstyrelsen har i bestilling sendt d. 31. august 2018 bedt DCA Nationalt Center for Fødevarer og Jordbrug om data vedrørende udviklingen i størrelsen og typen af landbrugsparceller i DK. Data skal bruges i ministeriets State of the Environment Report 2020 (SOER2020). DCA - Nationalt Center for Fødevarer og Jordbrug Lene Hegelund Specialkonsulent Dato 24. september 2018 Besvarelsen i form af en Excel-fil med dataudtræk og en dertilhørende udfyldt formular er udarbejdet af akademisk medarbejder Birger F. Pedersen og akademisk medarbejder Mette B. Greve fra Institut for Agroøkologi ved Aarhus Universitet. Postdoc Mette V. Odgaard og professor Tommy Dalgaard fra samme institut har været fagfællebedømmere, og notatet er revideret i lyset af deres kommentarer. Direkte tlf.: Mobiltlf.: lene.hegelund@dca.au.dk Afs. CVR-nr.: Journal Besvarelsen er udarbejdet som led i Rammeaftale om forskningsbaseret myndighedsbetjening mellem Miljø- og Fødevareministeriet og Aarhus Universitet som en ny opgave under Ydelsesaftale Planteproduktion Venlig hilsen Lene Hegelund DCA - Nationalt Center for Fødevarer og Jordbrug Aarhus Universitet Blichers Allé Tjele Tlf.: dca@au.dk dca.au.dk

2 DCA Nationalt Center for Fødevarer og Jordbrug Dato: Request for data on agricultural land parcel size Af Mette Balslev Greve og Birger Faurholt Pedersen, Institut for Agroøkologi v. Aarhus Universitet Indledning I denne besvarelse udtrækkes data (middelværdi, max, min, median, total areal og standard afvigelse) vedrørende udviklingen i størrelsen og typen af landbrugsparceller i DK. Samlet set viser opgørelserne at markstørrelserne generelt stiger. Antallet af marker er således faldet fra ca i 2007 til knap i Arealet er samtidig kun faldet fra ca til ha. Eller gennemsnitligt fra 3,6 ha i 2007 til 4,45 ha i Udover nedenstående formular består besvarelsen også af en Excel fil med dataudtrækket. Formular, EAA SOER Data Support Request: Agricultural Land Parcel Size Metadata form PART A General information Item- No. Item Form 1 NRC (or NFP) Denmark 2 NRC (or Contact Birgitte Ribert Grehn NFP) Name 3 - birrib@lbst.dk Address 4 Institution Landbrugsstyrelsen (The Danish Agricultural Agency) 5 Technical Operator (Person handling the data request) Contact Name Birger Faurholt Pedersen 6 address birgerf.pedersen@agro.au.dk 7 Institution Aarhus University, DCA, Institute of Agroecology 8 Date of data submission 28/09/2018 PART B Agricultural Land Parcel Size Metadata 1 List of delivered files DK_AGRI_PARCEL.xlxs

3 2 In which form (tabular or geospatial) is the information provided? Tabular 3 File format (please specify your delivery format) MS Excel Spreadsheet *.xlsx 4 Please specify the source that was used to provide the information. Other If you ticked Other, please specify: The LPIS and the applications for subsidy 5 Data custodian Ministry for agriculture and environment 6 Use constraints No limitation If you ticked Other, please specify: 7 Definition of reference parcel used (see also Figure 1 in the data request) 8 Coverage of agricultural land in the dataset 9 Completeness of agricultural land within dataset 10 Data content description Agricultural Parcel In order to follow the SOER2020 the Agricultural Parcel = single fields or parcels declared by the farmers for subsidy either for Basis payment subsidy (BPS) or subsidy according to other schemes are used in the calculation. The reference parcel system in Denmark is still the Physical block (PB) system. ALL potential national agricultural land is included in the database (the LPIS), but not all agricultural land is applied for subsidy every year. These not applied areas appear as free space within the PB. Includes non-declared agricultural land. The non-declared areas are about ha (4-5%) per year for all of Denmark and result from e.g.: Transition to urban area or road/forest etc. Changes of ownership leading to no application for subsidy in one or two years Changes in land use not visible in orthophoto and the physical blocks needing updating Tara areas (ponds, wet areas, hedges, protected areas etc.) These areas were reported in the final template table as OTHER - see also map in 11 Lineage. The background data available for the analysis were: Years Tabular from the application form Geospatial files from the IMK 2

4 *- 2018* Fields or parcels (all single polygon areas declared for subsidy within the physical block (PB)) Fields or parcels (all single polygon areas declared for subsidy within the physical block (PB)) (PB) Fields (parcels) + (PB) Fields (parcels) + (PB) * only spatial distribution available (shape files) with the declared crop types and polygon areas from the digital mapping web site (IMK = Internet Mark Kort) Denmark implemented the digital mapping to substitute paper maps for the application for subsidy in 2001 and from 2010 this was the only means of application together with the tabular data from the application form. This means that from 2011 nearly all single applied fields with crops has a corresponding polygon in the LPIS. Aarhus University has only received tabular data until 2016, so for the years 2017 and 2018 the calculations were based on the available digital mapping polygons from the LPIS and digital applications for subsidy with belonging crop types and areas. 11 Lineage 1. First the single parcels or fields were divided into the 11 NUTS3 regions in Denmark 2. Then the crop types for the single declared fields or parcels were divided into 4 crop groups (arable, permanent crop, permanent grass and other). The group OTHER was used for fields/parcels declared within the land-parcel identification system (LPIS) with crops of non-agricultural use subsidised by other schemes than BPS (Basis Payment Scheme). Furthermore, the total group (AGRI_L) was calculated as well resulting in five groups. 3. Then parcel statistics for the five crop groups (mean, max, min, median and stdev) were calculated for the years in the 11 NUTS 3 regions in Denmark (n=55) and the data was filled in in the columns F and H-M. 4. The polygon areas for the fields/parcels from only available as shape files were also divided from the crop types in the attribute table into the 5 crop groups and statistics calculated for these years and the data was filled in in the columns F and H-M. 5. In addition to the declared areas the not declared areas were found by GIS-analysis on the shape files of the declared fields /parcels and the physical blocks. An overlay of parcel and physical blocks leaves small not declared areas (reported in the final template table as OTHER ) as shown on the map 3

5 below. Only areas > 500m2 are included in the analysis (areas in blue on the map) and smaller areas excluded from the analysis (areas in red on the map). Other colours identify common areas for parcels and physical blocks. 12 Scale / Minimum mapping unit (violet = declared, red = not in analysis (OTHER), blue = within analysis, brown = non-agricultural land) 6. Parcel statistics for land not declared (mean, max, min, std) were then calculated for and included in the excel sheet in the row OTHER (column N-R). 7. Finally the data was transferred to the template table. 0.1ha 13 Temporal coverage (select all relevant years) Administrative level of the information provided. NUTS level 3 If you ticked Other, please specify: 15 Comments Disclaimer: 1. The crop group OTHER was used for both agricultural parcels declared with non-agricultural use (column H-M) and for the not declared areas of the reference physical blocks (column N-R). 2. However only the area of the declared crop areas (concerning column H-M) are summed in the AGRI_HA column (F). 3. Denmark use Physical block system, but the analysis was based on the single declared agricultural parcels. Therefor the REF_PARCEL column was set to AP (Agricultural parcel) 4