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Query: "keywords" (urban green infrastructure) .

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1.
Runoff and evapotranspiration–precipitation ratios as indicators of water regulation ecosystem services in urban forests
Urša Vilhar, 2025, original scientific article

Abstract: As a form of green infrastructure, urban forests play a key role in the provision of hydrological ecosystem services (ESs) in cities. Understanding how urban forest structure and soil properties influence water regulation ESs is crucial for managing and planning green infrastructure in cities. We analysed two indicators—the runoff to precipitation (Q/P) and the evapotranspiration to precipitation (ETP/P) ratios—for five different urban forests. We used the hydrological model Brook90 over 16 years to simulate runoff, evapotranspiration, canopy interception, transpiration and soil evaporation. The results showed that mixed forests have the highest water retention capacity, with the lowest Q/P (0.41) and the highest ETP/P (0.59). In contrast, riparian deciduous forests had the lowest water retention capacity, with the highest Q/P (0.75) and the lowest ETP/P (0.25). Both indicators showed similar annual and seasonal results. However, Q/P showed strong inter-annual variation and a strong correlation with precipitation, while ETP/P remained consistent despite precipitation fluctuations in the observed years. In conclusion, the ETP/P ratio is better suited to assess the water regulation ES of urban forests.
Keywords: stand structure, tree species composition, soil properties, hydrological model Brook90, urban ecosystems, precipitation, transpiration, urban green space, urban green infrastructure
Published in DiRROS: 14.04.2025; Views: 305; Downloads: 101
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2.
From intention to implementation of vertical green : the case of Ljubljana
Damjana Gantar, Jana Kozamernik, Ina Šuklje Erjavec, Simon Koblar, 2022, original scientific article

Abstract: This article examines the need and opportunities to implement vertical green in Ljubljana as a case of a medium-sized European city with a relatively green feel. Sustainability-oriented urban development supports the introduction of nature-based solutions in principle; however, there is a lack of vertical green as well as actual legislative and administrative support. Therefore, several methods were applied in the present study to link this idea to execution, starting with semistructured interviews and a workshop for selected city officials. Legislative and formal backgrounds for implementation were then assessed. An inventory of green façades and other structures (e.g., noise barriers and retaining walls) in Ljubljana was prepared, and a geographic information system-based decision support system was developed to identify the potential areas in the city where additional green space elements would be most favourable for humans, the environment, and climate indicators. The results reveal a gap between opportunities and the actual situation. The general opinion that there is never too much green space in urban areas is confirmed by direct information from the city administration and strategic documents. There are many potential sites for implementation; however, this is hindered by ownership, management, and economic issues. The study concludes with some suggestions for following the best practices in other central European capitals, such as Vienna and Berlin.
Keywords: vertical green, urban planning, sustainable city, green infrastructure
Published in DiRROS: 27.01.2025; Views: 335; Downloads: 175
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