Large-Area Empirically Based Visual Landscape Quality Assessment for Spatial Planning—A Validation Approach by Method Triangulation
Abstract
:1. Introduction
2. Materials and Methods
2.1. Landscape Attractiveness (Method Walz & Stein)
2.1.1. Underlying Theory
2.1.2. Description of the Approach and Evaluation Method (including Justification of the Choice of Indicators)
2.1.3. Data Used
2.1.4. Resolution, Raster Width of the Grid
2.1.5. Equal Weighting of All Indicators
2.1.6. Correlation of the Parameters with Each Other
2.1.7. Classification
2.2. Assessment of Germany’s Scenic Beauty Based on Online Survey and GIS Data (Method Roth et al.)
2.2.1. Underlying Theory
2.2.2. Description of the Approach and Evaluation Method (including Justification of the Choice of Indicators)
2.2.3. Data Used
2.2.4. Resolution, Raster Width of the Grid
2.2.5. Empirically Based Weighting of Indicators in the Regression Analysis
2.2.6. Correlation of the Parameters with Each Other
2.2.7. Classification
2.3. Method for Comparison of the Two Large-Area Visual Landscape Assessments
3. Results
3.1. Landscape Attractiveness Assessment Results (Method Walz & Stein)
3.2. Scenic Beauty Assessment Results (Method Roth et al.)
3.3. Comparison of the Two Large Area Visual Landscape Assessments
4. Discussion
5. Conclusions and Outlook
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Proportion of Unfragmented Open Space > 50 km2 | Topographic Diversity | Ratio of Riparian Areas | Density of Ecotones Dominated by Woody Plants | Hemeroby Index | Percentage of Open Space | Coastlines | Characterising Impacts of Technical Infrastructure | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
Wind Turbines | Photovoltaic Power Plants | High-Voltage Power Lines | |||||||||
Proportion of unfragmented open space > 50 km2 | 1.000 | 0.226 | 0.094 | −0.115 | 0.399 | 0.248 | 0.171 | 0.056 | 0.015 | 0.209 | |
Topographic diversity | 0.226 | 1.000 | −0.027 | 0.077 | 0.403 | 0.107 | −0.065 | 0.087 | 0.030 | 0.093 | |
Ratio of riparian areas | 0.094 | −0.027 | 1.000 | −0.025 | 0.065 | 0.034 | 0.180 | −0.041 | 0.028 | 0.042 | |
Density of ecotones dominated by woody plants | −0.115 | 0.077 | −0.025 | 1.000 | 0.033 | −0.117 | −0.102 | 0.066 | 0.031 | −0.022 | |
Hemeroby index | 0.399 | 0.403 | 0.065 | −0.033 | 1.000 | 0.491 | 0.306 | 0.172 | 0.053 | 0.312 | |
Percentage of open space | 0.248 | 0.107 | 0.034 | −0.117 | 0.491 | 1.000 | 0.012 | −0.071 | 0.021 | 0.230 | |
Coastlines | 0.171 | −0.065 | 0.180 | −0.102 | 0.306 | 0.012 | 1.000 | −0.021 | 0.021 | 0.111 | |
Caracterising impacts of technical infrastructure | Wind turbines | 0.056 | 0.087 | −0.041 | 0.066 | 0.172 | −0.071 | −0.021 | 1.000 | 0.004 | 0.037 |
Photo-voltaic power-plants | 0.015 | 0.030 | 0.028 | 0.031 | 0.053 | 0.021 | 0.021 | 0.004 | 1.000 | 0.030 | |
High-voltage power-lines | 0.209 | 0.093 | 0.042 | −0.022 | 0.312 | 0.230 | 0.111 | 0.037 | 0.030 | 1.000 |
Verbal Classification | Calculation Rule |
---|---|
particularly attractive | >[MV + 1.5 SD] |
very attractive | >[MV + 0.5 SD] to [MV + 1.5 SD] |
averagely attractive | >[MV − 0.5 SD] to [MV + 0.5 SD] |
less attractive | >[MV − 1.5 SD] to [MV − 0.5 SD] |
least attractive | <[MV − 1.5 SD] |
Major Regions of Natural Landscape Classification (Meynen and Schmithüsen 1953–1962) | |||||||
---|---|---|---|---|---|---|---|
North/ Baltic Sea | North German Plain | Central German Upland Range | German Cuestas | Alpine Forelands | Alps | ||
Landscape Types (Gharadjedaghi (2004) | Coastal landscapes | 2 | 0 | - | - | - | - |
Forest landscapes | - | 2 | 3 | 2 | 0 | 1 | |
Structurally diverse cultural landscapes | 3 | 3 | 2 | 2 | 0 | ||
Open cultural landscapes | - | 5 | 1 | 1 | 1 | - | |
Mining landscapes | - | 1 | - | - | - | - | |
Urban agglomerations | - | 1 | 0 | 0 | 0 | - |
Zone | Distance |
---|---|
1 | 0 to 500 m |
2 | >500 to 2000 m |
3 | >2000 to 5000 m |
4 | >5000 to 10,000 m |
foreground | 0 to 2000 m (zones 1 and 2 combined) |
background | >2000 to 10,000 m (zones 3 and 4 combined) |
overall view | 0 to 10,000 m (all zones combined) |
Regressor Variable. | Distance Zone | Non-Standardized Beta Coefficient | Standardized Beta Coefficient |
---|---|---|---|
constant | / | 7.109 | |
difference in elevation (absolute value) 1 | 0 to 2000 m | +0.002 ** | +0.171 ** |
difference in elevation (absolute value) 2 | 2000 to 10,000 m | +0.001 ** | +0.185 ** |
lake, ocean, river (percentage of viewshed) | 0 to 500 m | +0.008 ** | +0.152 ** |
orchard (percentage of viewshed) | 0 to 10,000 m | +0.031 ** | +0.096 ** |
forest (percentage of viewshed) | 0 to 10,000 m | +0.005 * | +0.088 * |
natural grassland (percentage of viewshed) | 500 to 2000 m | +0.025 ** | +0.083 ** |
heathland (percentage of viewshed) | 0 to 500 m | +0.017 * | +0.068 * |
hemeroby (average value) | 0 to 500 m | −0.317 ** | −0.200 ** |
road density (m/km2) | 0 to 2000 m | −0.0001 ** | −0.189 ** |
arable land (percentage of viewshed) | 0 to 10,000 m | −0.010 ** | −0.187 ** |
Industrial, commercial and traffic infrastructure 1 (percentage of viewshed) | 0 to 500 m | −0.019 ** | −0.187 ** |
Industrial, commercial and traffic infrastructure 2 (percentage of viewshed) | 500 to 2000 m | −0.018 ** | −0.106 ** |
Industrial, commercial and traffic infrastructure 3 (percentage of viewshed) | 2000 to 5000 m | −0.011 * | −0.065 * |
transmission line density (m/km2) | 0 to 500 m | −0.0001 ** | −0.101 ** |
sport and recreation area (percentage of viewshed) | 0 to 500 m | −0.019 ** | −0.077 ** |
Aera with sparse vegetation (percentage of viewshed) | 500 to 2000 m | −0.205 * | −0.075 * |
wind turbine density (no./km2) | 0 to 10,000 m | −0.588 * | −0.071 * |
Class | Calculation Rule |
---|---|
1 | <[MV − 2 SD] |
2 | >[MV − 2 SD] to [MV − 1.5 SD] |
3 | >[MV − 1.5 SD] to [MV − SD] |
4 | >[MV − SD] to [MV − 1/3 SD] |
5 | >[MV − 1/3 SD] to [MV + 1/3 SD] |
6 | >[MV + 1/3 SD] to [MV + SD] |
7 | >[MV + SD] to [MV + 1.5 SD] |
8 | >[MV + 1.5 SD] to [MV + 2 SD] |
9 | > [MV + 2 SD] |
Inversion Value. | Frequency | Percentage |
---|---|---|
−3 and −4 | 8 | 0.05 |
−2 | 381 | 2.55 |
−1 | 3606 | 24.09 |
0 | 6969 | 46.56 |
1 | 3100 | 20.71 |
2 | 826 | 5.52 |
3 and 4 | 79 | 0.53 |
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Roth, M.; Hildebrandt, S.; Walz, U.; Wende, W. Large-Area Empirically Based Visual Landscape Quality Assessment for Spatial Planning—A Validation Approach by Method Triangulation. Sustainability 2021, 13, 1891. https://0-doi-org.brum.beds.ac.uk/10.3390/su13041891
Roth M, Hildebrandt S, Walz U, Wende W. Large-Area Empirically Based Visual Landscape Quality Assessment for Spatial Planning—A Validation Approach by Method Triangulation. Sustainability. 2021; 13(4):1891. https://0-doi-org.brum.beds.ac.uk/10.3390/su13041891
Chicago/Turabian StyleRoth, Michael, Silvio Hildebrandt, Ulrich Walz, and Wolfgang Wende. 2021. "Large-Area Empirically Based Visual Landscape Quality Assessment for Spatial Planning—A Validation Approach by Method Triangulation" Sustainability 13, no. 4: 1891. https://0-doi-org.brum.beds.ac.uk/10.3390/su13041891