Can Urban Trees Reduce the Impact of Climate Change on Storm Runoff?

Zabret, Katarina; Šraj, Mojca

doi:10.5379/urbani-izziv-en-2015-26-supplement-011

Cited by 16 publications

(10 citation statements)

References 41 publications

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“…Measurements of interception by two different tree species in our study were conducted in an urban area. Therefore, the basic research on rainfall interception was focused on the benefits of urban trees as part of green infrastructure [14,67]. One of the benefits of such urban trees is the storm water reduction [67].…”

Section: Rainfall Partitioning Measurementsmentioning

confidence: 99%

“…Therefore, the basic research on rainfall interception was focused on the benefits of urban trees as part of green infrastructure [14,67]. One of the benefits of such urban trees is the storm water reduction [67]. Although trees have an important role in regulating urbanised hydrology systems, there is still little known about the best trees to choose.…”

Section: Rainfall Partitioning Measurementsmentioning

confidence: 99%

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Application of Copula Functions for Rainfall Interception Modelling

Bezak

Zabret

Šraj

2018

Water

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Rainfall interception is an important process of the water cycle that can have significant influence on surface runoff and groundwater storage. Since rainfall interception measurements are rare and time consuming, rainfall interception estimation can be made indirectly using different meteorological variables. Experimental data of rainfall interception for birch and pine trees was measured at an experimental plot located in an urban area of Ljubljana, Slovenia in this study. A copula model was applied to predict the rainfall interception using meteorological variables, namely air temperature and vapour pressure deficit data. The copula model performance was compared to some other models such as decision trees, multiple linear regressions, and exponential functions. Using random sampling, we found that the copula model where Khoudraji-Liebscher copula functions were used yielded slightly smaller root mean square error (RMSE) and mean absolute error (MAE) values than other tested methods (i.e., RMSE and MAE results for birch trees were 24.2% and 18.2%, respectively and RMSE and MAE results for pine trees were 25.0% and 19.6%, respectively). The results demonstrate that the copula-based proposed method and other tested models could be used for the prediction of rainfall interception at the considered plot and in the wider surroundings. Furthermore, these models could also be applied for the prediction of rainfall interception for these two tree species in other locations under similar vegetation and meteorological conditions.

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Section: Rainfall Partitioning Measurementsmentioning

confidence: 99%

Section: Rainfall Partitioning Measurementsmentioning

confidence: 99%

Application of Copula Functions for Rainfall Interception Modelling

Bezak

Zabret

Šraj

2018

Water

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“…For instance, Betula pendula intercepted 60% of precipitation in the leafed period compared to 30% interception rate in the leafless period. Another study conducted in Ljubljana showed that throughfall under silver birch (Betula pendula, deciduous tree) during the leafless period was almost 23% higher than in the leafed period (Zabret and Šraj 2015). For the mixed beechspruce forests, the net precipitation was on average 10% lower during the growing season (the leafed period) than during dormancy (the leafless period) (Vilhar 2016).…”

Section: 5mentioning

confidence: 99%

“…With the interception and retention of precipitation in tree canopies, forests are capable of regulating throughfall -the proportion of precipitation that either passes through gaps in the canopy or drips from foliar and woody components of the canopy (Schooling and Carlyle-Moses 2015). Consequently, they mitigate soil erosion processes and the related negative effects of intense rainfall events, e.g., water accumulation, flooding (Chen and Jim 2008), stormwater runoff and the costs of controlling it (McPherson et al 2005;Zabret and Šraj 2015).…”

Section: Introductionmentioning

confidence: 99%

Canopy precipitation interception in urban forests in relation to stand structure

Kermavnar

Vilhar

2017

Urban Ecosyst

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Urban forests provide important ecosystem services. In terms of hydrological benefits, forest ecosystems in urban environments represent qualitative and quantitative filter for rainwater. We quantified the canopy interception in relation to urban forest stand structure and rainfall intensity in an urban transect of the mixed (upland) forest in the city centre, towards a riparian pine forest and a floodplain hardwood forest in the City of Ljubljana, Slovenia. Bulk precipitation in open areas and throughfall were measured with fixed rainfall collectors in each forest. Stemflow was estimated from a review of relevant literature. We found that canopy interception in selected urban forests was mainly affected by tree species composition and other stand structure variables, such as canopy cover and tree dimensions. Average annual canopy interception was highest in the mixed forest (18.0% of bulk precipitation), while the riparian pine forest had the lowest level (3.9% of bulk precipitation) and the floodplain hardwood forest had the intermediate level for interception (7.1% of bulk precipitation). The mixed forest exhibited the stand structure factors that contributed to the highest canopy interception among the studied forests: high assemblage of dominant coniferous trees, denser canopy cover and the highest growing stock. Furthermore, rainfall intensity has proven to be an important factor for the seasonal partitioning (comparing the leafed and leafless period) of canopy interception. A better understanding of precipitation interception processes in urban forests is needed to assist urban forest managing and planning, aiming at maximizing canopy interception for the mitigation of stormwater runoff and flooding in urbanized watershed.

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“…They cover master's theses and scientific papers mainly published by authors associated with the Faculty of Civil and Geodetic Engineering, University of Ljubljana and Slovenian Forestry Institute. The majority dealt with the effects of urban forests or urban trees in built environment, such as surface runoff [127][128][129][130][131][132][133] or quality of groundwater [134]. Thus, the hydrological aspect of urban forests seemed to be the most important.…”

Section: Resultsmentioning

confidence: 99%

Three Decades of Urban Forest and Green Space Research and Practice in Croatia and Slovenia

Ostoić

Vuletić

Planinšek

et al. 2020

Forests

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Background and Objectives: Urban forests and green space contribute to human wellbeing. Green infrastructure is recognized by the European Union as a planning tool that contributes to the implementation of many public policies, with urban forests and green space as its main building blocks. Croatia and Slovenia are young democracies and recent members of the European Union. Hence, they also need to contribute to the implementation of those policies. Previous review studies on urban forests and green space rarely addressed scientific or professional publications in those countries. Furthermore, the body of knowledge about urban forest and green space research and practice in post-socialist countries is still rather weak. The goal of the paper is (a) to show that urban forest and green space research and practice is much stronger in these countries than it is possible to assume based only on previous review papers or only by searching Scopus and Web of Science, and (b) to describe publications written by scientists and professionals in the past 30 years. Materials and Methods: We used a trilingual systematic literature review to identify scientific and grey literature in various databases, as well as a snowballing technique, and yielded 211 publications in Croatia and 84 in Slovenia. Results: We identified many more publications on urban forests and green space science and practice in Croatia and Slovenia than it was possible to assume based only on previous review papers and when searching solely publications in English. Croatian authors showed continuity over time in terms of number of publications, while Slovenian publications have been on the rise in the past decade. In both countries, scientific papers were most frequent, and the vast majority of studies addressed capital cities. Croatian publications mainly focused on parks and park-forests, while Slovenian publications focused on urban forests. Interestingly, Croatian authors were affiliated with over 60 organizations, and in comparison to Slovenian authors, have stronger preference towards publishing in their local language. Green space planning and design followed by resource inventory were the most frequent themes. The least addressed themes in both countries were resource management, economic aspects, policy, legislation or governance. Conclusions: Important discussion in the future, especially in Croatia, would be regulation of urban forestry as a profession. Cross-sectoral and interdisciplinary studies, as well as focusing on cities other than capitals in future, can help in addressing issues such as climate change or application of participatory approaches.

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Can Urban Trees Reduce the Impact of Climate Change on Storm Runoff?

Cited by 16 publications

References 41 publications

Application of Copula Functions for Rainfall Interception Modelling

Application of Copula Functions for Rainfall Interception Modelling

Canopy precipitation interception in urban forests in relation to stand structure

Three Decades of Urban Forest and Green Space Research and Practice in Croatia and Slovenia

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