Artykuły naukowe (WS)
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Browsing Artykuły naukowe (WS) by Subject "ecosystem services"
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Item Improving methods to calculate the loss of ecosystem services provided by urban trees using LiDAR and aerial orthophotos(Elsevier, 2021-05) Zięba-Kulawik, Karolina; Hawryło, Paweł; Wężyk, Piotr; Matczak, Piotr; Przewoźna, Patrycja; Inglot, Adam; Mączka, KrzysztofIn this paper we propose a methodology for combining remotely sensed data with field measurements to assess selected tree parameters (diameter at breast height (DBH) and tree species) required by the i-Tree Eco model to estimate ecosystem services (ES) provided by urban trees. We determined values of ES provided by trees in 2017 in Racibórz (a city in South Poland) and estimated the loss of ES from January 1, 2017 to March 5, 2017, a period of changing legislation that temporarily allowed removal of trees on private property without any permission from city authorities. We applied Canopy Height Models (CHM; GSD 1.0 m) generated from two sets of ALS LiDAR point clouds (acquisitions on June 11, 2011 and March 5, 2017) and performed tree crown segmentations using the GEOBIA approach. Physical attributes were estimated for each tree using predictive models, developed based on field tree inventory . The reference areas for parameterizing the segmentation algorithm and assessing tree species composition were established in Racibórz, while reference data required for assessment of DBH were obtained from the MONIT-AIR project (from Municipality of Kraków). We found that in 2017, 988.79 ha of Racibórz (13.2 % of city area) was covered by the crowns of 264 471 trees, providing ES structural values worth over 384 mil €. The structural value of ES lost in the first months of 2017 (during which 5 075 trees were removed) was about 3.5 mil €. We concluded that in the face of information on tree crown cover that is often missing from city databases, tree inventories require application of a combination of multi-source and multi-resolution spatial analyses, including: administrative decisions for tree removal with exact location, predictive modelling of selected biometrical tree information, automatic crown segmentation on CHM and interpretation of regularly updated color infrared (CIR) aerial orthophotos.Item The ecosystem services concept as a tool for public participation in management of Poland’s Natura 2000 network(Elsevier, 2019-02) Mączka, Krzysztof; Chmielewski, Piotr; Jeran, Agnieszka; Matczak, Piotr; van Riper, Carena J.This paper examined how the ecosystem services (ES) concept was employed as a tool for stakeholders from different social and professional worlds to deliberate about the management of Natura 2000 areas in Poland. Drawing from Framing Theory and discourse analysis, we analyzed public documents that were generated over a five-year period. We observed that many public debates were couched within the ES framework and related to management of a range of land cover categories. Our results also indicated the majority of public discussions were descriptive and neutral, with a focus on maintaining the flow of Provisioning, and Regulation and Maintenance services to local communities. Normative tones were adopted, particularly surrounding Cultural ES, despite the limited amount of time that stakeholders dedicated to exploring these topics. Our results reinforce the importance of considering the ES concept as a boundary object that maintains interpretive flexibility and focuses stakeholder attention on points of potential social conflict. The implications that emerge from this research are particularly relevant for protected areas, such as those found in Poland, which are reforming environmental protection plans and seeking communication tools to facilitate public participation, environmental sustainability, and more equitable policy outcomes.