Transcript Austria
Conservative vs. dynamic agricultural landscapes in Austria – a comparison based on historical development of landscape structure Dr.Thomas Wrbka University of Vienna; Department of Conservation Biology, Vegetation and Landscape Ecology ©Wrbka / univie 1 Wilderness? ©Wrbka / univie 2 Or just another European example for modern landscape transformation? Tourism Forest fragmentation Global warming Abandonment Traffic Urbanisation Matrei in Eastern Tyrol / Austria ©Wrbka / univie 3 AUSTRIA ?: • situated in the “heart of Europe”; • only 84.000 square kilometers! • transitional between four biogeographical zones (subatlantic, subcontinental, alpine, submediterranean); • steep ecological gradients (altitude, precipitation, temperature,...); • high diversity of bedrock, soil and landforms; ©Wrbka / univie 4 Austria – cultural perspective: • situated at the “crossroads” of Europe: Danube corridor, Amber road, Mountain Dwelling Houses and Farm Buildings passes through the Alps • high diversity of cultural traditions: illyric, celtic, romanic, slavic, hungarian, germanic (bavarian, suebian, franconian); • long history of interaction between humans & nature – earliest artifacts from 30.000 BC ! high diversity of landscape types ©Wrbka / univie 5 Classification of Austrian Cultural Landscapes Main Types 12 Types and 47 Subtypes ©Wrbka / univie 6 Example for Group E Upland dairyfarming coverage: 17% Sample Site: Post - Behamberg ©Wrbka / univie 7 Group I: Cropfarming landscapes Subgroup 404: Large scale cropfarming in extraalpine Lowlands coverage: 12% Sample Site: Teichhof ©Wrbka / univie 8 Recent Changes in Austrian agricultural landscapes 1: Fragmentation of the „wet meadow landscape“ in the Vienna Basin between 1900 to 1950 ©Wrbka / univie 9 How to track changes ? First complete land survey of the Austrian territories Conducted by army officers Scale: 1 : 28.880 Military map General information on broad land-cover types Detailed and very reliable information on features interesting for military purposes („obstacles“): watercourses, swamps, dense forest,..) ©Wrbka / univie >>> First (Josefinian) Land Survey (1764 – 1787) Meso-scale 10 How to track changes ? Second complete land survey of the total AustroHungarian Empire Conducted by army officers Scale: 1 : 2.880 Taxation map Detailed information for every land parcel (yield data, etc.) in paper database Franziscan Cadastral Map (1817 – 1871) ©Wrbka / univie >>> Micro-scale 11 Landscape change in Südburgenland / Talboden der Pinka 33% 32% 2002 70% 92% 69% 91% 10 10 % 35% 15% 30% 44% Obstgärten 48% 11% % 10 48% % 0 ,5 3% 0, 2% 5% 59% 2% 69% 20 1% 37% 7% % 54% 67% 60% 21 Grünland % 35 3% = 1ha 49% 86% 1991 31 20% % 43 Wald 40 6% Gewässer 50 80% % 28 Brachflächen 60 geh.freie Kleinstr. 70 Kleinstr.m.Geh. 71 Siedlung 2% 81% 6% 91% 8% 97% 100% 9% 11% 81 Sonderflächen 82 Verkehr 1 Verkehr 2 91 92 Sonderbiotope 100 >>> ©Wrbka / univie Beispiel Naturräumliche Einheit 1 - Pinkaboden 59% 1975 36 % Acker 1958 Abb. Südburgenland - Transformation der Landnutzung im Zeitraum von 1857-2002. Auswertung auf Basis des Franz. Katasters (2.Landesaufnahme (1857), historisc hen Luftbildern (1958-1991) sowie einer aktuellen Landnutzungskartierung (2002). Transformationsmatrix Auflösung der Basis-Grids 10x10m. 1857 Directional change over 150 years 12 Landscape change in Südburgenland / Talboden der Pinka 33% 32% 70% 92% 69% 91% 10 21 35% 15% 30% 44% Obstgärten 48% 11% % 10 48% % 0 ,5 3% 0, 2% 5% 59% 2% 69% 20 1% 37% 7% % 54% 67% 60% Grünland 2002 10 % % 35 3% = 1ha 49% 86% 1991 31 20% % 43 Wald 40 6% Gewässer 50 80% % 28 Brachflächen 60 geh.freie Kleinstr. 70 Kleinstr.m.Geh. 71 Siedlung 2% 81% 6% 91% 8% 97% 100% 9% 11% 81 Sonderflächen 82 Verkehr 1 Verkehr 2 91 92 >>> Sonderbiotope ©Wrbka / univie Beispiel Naturräumliche Einheit 1 - Pinkaboden 59% 1975 36 % Acker 1958 Abb. Südburgenland - Transformation der Landnutzung im Zeitraum von 1857-2002. Auswertung auf Basis des Franz. Katasters (2.Landesaufnahme (1857), historisc hen Luftbildern (1958-1991) sowie einer aktuellen Landnutzungskartierung (2002). Transformationsmatrix Auflösung der Basis-Grids 10x10m. 1857 Character change: transition between major landuse categories 100 13 Landscape change in Südburgenland / Hillsides (“Riedelflanken”) Acker 1975 1991 2002 52% 31% 35% 37% 35% 11% 22% 10% 9% 6% = 1ha 20 Grünland 31 Obstgärten 8% 15% 10% 10% 10% 31 Weingärten 9% 8% 9% 11% 11% 40 Wald 16% 19% 20% 23% 23% 60 Brachflächen 81 Siedlung 82 Sonderflächen 70 geh.freie Kleinstr. 71 Kleinstr.m.Geh. 50 Gewässer 91 Verkehr 1 92 Verkehr 2 100 10% 9% 20% 4% 35% 6% Beispiel Brachflächen in der Naturräumliche Einheit 3 - Riedelflanke 1958 Abb. Südburgenland - Transformation der Landnutzung im Zeitraum von 1857-2002. Auswertung auf Basis des Franz. Katasters (2.Landesaufnahme (1857), historischen Luftbildern (1958-1991) sowie einer aktuellen Landnutzungskartierung (2002). Transformationsmatrix Auflösung der Basis-Grids 10x10m. 10 1857 Sonderbiotope >>> ©Wrbka / univie Oscillation and slow change 14 From change detection to change analysis 1958 33% 32% 49% 1991 2002 70% 92% 69% 91% 67% 35% 48% 11% % 10 48% % 0 ,5 3% 44% Obstgärten 5% 15% 30% 0, 2% 2% 21 20 1% 37% 59% 7% % 54% 36 % 60% 69% 31 20% % 43 Wald 40 6% 1817–1861 10 10 % Grünland % 35 3% = 1ha 1764 - 1787 1975 86% Gewässer 50 80% % 28 Brachflächen 60 geh.freie Kleinstr. 70 Kleinstr.m.Geh. Siedlung 1984 Trend analysis 71 2% 81% 6% 91% 8% 97% 100% 9% 11% 82 Verkehr 1 Verkehr 2 91 92 Sonderbiotope 1994 81 Sonderflächen Beispiel Naturräumliche Einheit 1 - Pinkaboden 59% Abb. Südburgenland - Transformation der Landnutzung im Zeitraum von 1857-2002. Auswertung auf Basis des Franz. Katasters (2.Landesaufnahme (1857), historisc hen Luftbildern (1958-1991) sowie einer aktuellen Landnutzungskartierung (2002). Transformationsmatrix Auflösung der Basis-Grids 10x10m. 1857 Acker 100 Transformation matrix ? 2000 Konservative L. ©Wrbka / univie 15 VOITSAU Reconstruction of land-use from digitized historical cadastrial map ©Wrbka / univie Some landscape elements persist over long periods >>> PELs / persistent landscape elements 16 Percentage of PELs is regionally very different: High percentage (= conservative l.) vs. Low percentage (= dynamic landscapes) Voitsau Theyern / Nussdorf Grossarl Sampling design for in depth studies on formation and function of agricultural landscapes ©Wrbka / univie 17 Transgressing the map age boundary Reconstruction of land-use from written sources: archive of monastery Göttweig ©Wrbka / univie 18 Integration of data from different sources Investigated entity (Village, settlement) PARCELS HOLDINGS Example: Theyern, Nussdorf PERSONS Vegetation Survey 1995 Digital Elevation Model 1995 Parish registers from 17.C onwards PLANNED ONLY: soil profiles (esp. in erosion areas) Palaeobotanical Data (e.g. pollen profiles) Dendrochronological Data Malakological Data Archaeological Data …. POPULATION CENSUS from 1869 onwards Plans and Maps, from 2.H. 17C. Municipality Account Books, 1.H. 19.C Kastenamts- Accounts, 16.-19. C Village Law (Custumal), 16. C Forste Regulations, 16. and 18. C statistical data on cultivation, 20. C ©Wrbka / univie Notes on traditio 11.-13. C. Charters, 12.-15. C. Urbarial Books, 13/14. Jh. Peasant Labour books, 15. C. Property registers, 16.-19. C --Theresianian „Fassion“, mid-18 C Josephinian „Fassion“, 1780 Franziszeian Cadastral Map, ca. 1820-1840 + Cadastral Estimation Registers etc. Gewährbücher, 15.-19. C Tithe register: Tithes on Wine, 16.-19. C „Local Urbarii- Description“, 1733 19 How pre-industrial agricultural systems work and thus should be studied POPULATION mode of demographic behavior PRODUCTION Farm households technology, social organisation AGROECOSYSTEM Raw products seed external connections crops, soils, water, animals environmental factors (climate, etc.) influence draught power nutrient transfer ©Wrbka / univie human constitution products money labor 20 Landscape types with different nature value in Austria – Percentage of the whole territory Very high High Medium Low Very low Total Coincidence between Alpine and Forested Agricultural Urbanized Total Subalpine Landscapes Landscapes Landscapes Landscapes 13 2 2 17 3 - 1 33 - 15 9 20 - 1 1 16 45 21 1 16 36 46 2 100 ©Wrbka / univie high nature value and high percentage of persistent landscape elements 21 Conservative agricultural landscapes as “role-models” for sustainable development? Vernacular architecture At least: a promising coincidence of natural, cultural & economic values ! wise use of renewable resources ancient land management traditions maintaining green infrastructure Thank You ! multifunctional use of forest resources ©Wrbka / univie 22