i-tree Application for Ecosystem Services Assessment of Urban Trees in Ado Ekiti, Ekiti State, South West, Nigeria

2022 ◽  
Author(s):  
Johnson Olusola ◽  
Aladesanmi Agbelade
Keyword(s):  
Ecosystem Services ◽  
Urban Trees ◽  
South West

scholarly journals Towards sustainable management of the stock and ecosystem services of urban trees. From theory to model and application

Trees ◽  
2021 ◽  
Author(s):  
H. Pretzsch ◽  
A. Moser-Reischl ◽  
M. A. Rahman ◽  
S. Pauleit ◽  
T. Rötzer
Keyword(s):  
Ecosystem Services ◽  
Carbon Sequestration ◽  
Leaf Area ◽  
Ecosystem Service ◽  
Sustainable Management ◽  
Environmental Changes ◽  
Urban Trees ◽  
Urban Tree ◽  
Age Class ◽  
Sustainable Planning

Abstract Key message A model for sustainable planning of urban tree stocks is proposed, incorporating growth, mortality, replacement rates and ecosystem service provision, providing a basis for planning of urban tree stocks. Abstract Many recent studies have improved the knowledge about urban trees, their structures, functions, and ecosystem services. We introduce a concept and model for the sustainable management of urban trees, analogous to the concept of sustainable forestry developed by Carl von Carlowitz and others. The main drivers of the model are species-specific tree diameter growth functions and mortality rates. Based on the initial tree stock and options for the annual replanting, the shift of the distribution of the number of trees per age class can be predicted with progressing time. Structural characteristics such as biomass and leaf area are derived from tree dimensions that can be related to functions such as carbon sequestration or cooling. To demonstrate the potential of the dynamic model, we first show how different initial stocks of trees can be quantitatively assessed by sustainability indicators compared to a target stock. Second, we derive proxy variables for ecosystem services (e.g. biomass for carbon sequestration, leaf area for deposition and shading) from a given distribution of the number of trees per age class. Third, we show by scenario analyses how selected ecosystem services and functions may be improved by combining complementary tree species. We exercise one aspect (cooling) of one ecosystem service (temperature mitigation) as an example. The approach integrates mosaic pieces of knowledge about urban trees, their structures, functions, and resulting ecosystem services. The presented model makes this knowledge available for a sustainable management of urban tree stocks. We discuss the potential and relevance of the developed concept and model for ecologically and economically sustainable planning and management, in view of progressing urbanization and environmental changes.

Urban Trees and Water Use in Arid Climates: Insights from an Integrated Bioeconomic-Health Model

2018 ◽  
Vol 04 (04) ◽  
pp. 1850022 ◽  
Author(s):  
Benjamin A. Jones ◽  
John Fleck
Keyword(s):  
Ecosystem Services ◽  
Water Use ◽  
Forest Canopy ◽  
Urban Forest ◽  
Economic Value ◽  
Urban Trees ◽  
Tree Cover ◽  
Arid Environments ◽  
Value Of Water ◽  
Health Model

Managing outdoor water use while maintaining urban tree cover is a key challenge for water managers in arid climates. Urban trees generate flows of ecosystem services in arid areas, but also require significant amounts of irrigation. In this paper, a bioeconomic-health model of trees and water use is developed to investigate management of an urban forest canopy when irrigation is costly, water has economic value, and trees provide ecosystem services. The optimal tree irrigation decision is illustrated for Albuquerque, New Mexico, an arid Southwest US city. Using a range of monetary values for water, we find that the tree irrigation decision is sensitive to the value selected. Urban deforestation is optimal when the value of water is sufficiently high, or alternatively starts low, but grows to cross a specific threshold. If, however, the value of water is sufficiently low or if the value of tree cover rises over time, then deforestation is not optimal. The threshold value of water where the switch is made between zero and partial deforestation is well within previously identified ranges on actual water values. This model can be applied generally to study the tradeoffs between urban trees and water use in arid environments.

scholarly journals Understanding Public Intentions to Pay for the Conservation of Urban Trees Using the Extended Theory of Planned Behavior

2021 ◽  
Vol 13 (16) ◽  
pp. 9228
Author(s):  
Chyi-Rong Chiou ◽  
Wei-Hsun Chan ◽  
Jiunn-Cheng Lin ◽  
Meng-Shan Wu
Keyword(s):  
Ecosystem Services ◽  
Theory Of Planned Behavior ◽  
Planned Behavior ◽  
Structural Equation ◽  
Positive Impact ◽  
Perceived Usefulness ◽  
Urban Trees ◽  
Equation Modeling ◽  
Extended Theory ◽  
The Impact

Urban trees could provide a variety of ecosystem services. However, they require conservation to sustain a healthy and consistent provision of services. This study applies an extended theory of planned behavior (ETPB) to understand residents’ pay intention for conserving urban trees. In order to explore the impact of the public perception of urban trees, two constructs such as perceived usefulness and perceived tree benefits have been added to the TPB model. This study conducted a questionnaire survey on Taipei city residents and received 364 valid responses. The partial least squares structural equation modeling (PLS-SEM) was used for the analysis of the model. The results show that residents’ perceived usefulness and perceived tree benefits of urban trees have a significantly positive impact on public attitude toward protecting urban trees. Individuals’ intention to pay towards conservation of urban trees is, on the other hand, affected by subjective norm, attitude, perceived behavioral control, and perceived usefulness. Thus, with education and promotion of tree usefulness and benefits of ecosystem services, it is helpful to improve residents’ attitudes regarding the protection of urban trees and increase their intention to pay for urban tree conservation.

scholarly journals ASSESSING URBAN FOREST CANOPY COVER IN GREAT PLAIN CONSERVATION AREA (DÜZCE CITY, TURKEY) BETWEEN 1984 AND 2015

2021 ◽  
Vol XLVI-4/W5-2021 ◽  
pp. 539-544
Author(s):  
Z. Uçar ◽  
R. Eker ◽  
A. Aydin
Keyword(s):  
Ecosystem Services ◽  
Forest Canopy ◽  
Urban Forest ◽  
Canopy Cover ◽  
Tree Canopy ◽  
Urban Trees ◽  
Conservation Area ◽  
Urban Tree ◽  
Tree Canopy Cover ◽  
Urban Tree Canopy

Abstract. Urban trees and forests are essential components of the urban environment. They can provide numerous ecosystem services and goods, including but not limited to recreational opportunities and aesthetic values, removal of air pollutants, improving air and water quality, providing shade and cooling effect, reducing energy use, and storage of atmospheric CO2. However, urban trees and forests have been in danger of being lost by dense housing resulting from population growth in the cities since the 1950s, leading to increased local temperature, pollution level, and flooding risk. Thus, determining the status of urban trees and forests is necessary for comprehensive understanding and quantifying the ecosystem services and goods. Tree canopy cover is a relatively quick, easy to obtain, and cost-effective urban forestry metric broadly used to estimate ecosystem services and goods of the urban forest. This study aimed to determine urban forest canopy cover areas and monitor the changes between 1984–2015 for the Great Plain Conservation area (GPCA) that has been declared as a conservation Area (GPCA) in 2017, located on the border of Düzce City (Western Black Sea Region of Turkey). Although GPCA is a conservation area for agricultural purposes, it consists of the city center with 250,000 population and most settlement areas. A random point sampling approach, the most common sampling approach, was applied to estimate urban tree canopy cover and their changes over time from historical aerial imageries. Tree canopy cover ranged from 16.0% to 27.4% within the study period. The changes in urban canopy cover between 1984–1999 and 1999–2015 were statistically significant, while there was no statistical difference compared to the changes in tree canopy cover between 1984–2015. The result of the study suggested that an accurate estimate of urban tree canopy cover and monitoring long-term canopy cover changes are essential to determine the current situation and the trends for the future. It will help city planners and policymakers in decision-making processes for the future of urban areas.

Role of photo- and biodegradation of two PAHs on leaves: Modelling the impact on air quality ecosystem services provided by urban trees

2020 ◽  
Vol 739 ◽  
pp. 139893
Author(s):  
Elisa Terzaghi ◽  
Flavia De Nicola ◽  
Bruno E.L. Cerabolini ◽  
Rosa Posada-Baquero ◽  
Josè-J. Ortega-Calvo ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Air Quality ◽  
Urban Trees ◽  
The Impact

scholarly journals Tree Cover for the Year 2010 of the Metropolitan Region of São Paulo, Brazil

Data ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 145
Author(s):  
Fabien H. Wagner ◽  
Mayumi C.M. Hirye
Keyword(s):  
Ecosystem Services ◽  
Spatial Resolution ◽  
Urban Forest ◽  
Sao Paulo ◽  
Urban Trees ◽  
Aerial Photographs ◽  
Metropolitan Region ◽  
Tree Cover ◽  
São Paulo ◽  
The World

Mapping urban trees with images at a very high spatial resolution (≤1 m) is a particularly relevant recent challenge due to the need to assess the ecosystem services they provide. However, due to the effort needed to produce these maps from tree censuses or with remote sensing data, few cities in the world have a complete tree cover map. Here, we present the tree cover data at 1-m spatial resolution of the Metropolitan Region of São Paulo, Brazil, the fourth largest urban agglomeration in the world. This dataset, based on 71 orthorectified RGB aerial photographs taken in 2010 at 1-m spatial resolution, was produced using a deep learning method for image segmentation called U-net. The model was trained with 1286 images of size 64 × 64 pixels at 1-m spatial resolution, containing one or more trees or only background, and their labelled masks. The validation was based on 322 images of the same size not used in the training and their labelled masks. The map produced by the U-net algorithm showed an excellent level of accuracy, with an overall accuracy of 96.4% and an F1-score of 0.941 (precision = 0.945 and recall = 0.937). This dataset is a valuable input for the estimation of urban forest ecosystem services, and more broadly for urban studies or urban ecological modelling of the São Paulo Metropolitan Region.

scholarly journals Estimation of Ecosystem Services Provided by Street Trees in Kyoto, Japan

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 311
Author(s):  
Xiaoyang Tan ◽  
Satoshi Hirabayashi ◽  
Shozo Shibata
Keyword(s):  
Ecosystem Services ◽  
Green Infrastructure ◽  
Energy Savings ◽  
Urban Forest ◽  
Urban Trees ◽  
Street Trees ◽  
Flowering Dogwood ◽  
Runoff Reduction ◽  
Kyoto City ◽  
Salix Babylonica

Street trees are integral components of urban green infrastructure. The importance of benefits provided by street trees has motivated the development of various tools to quantify the value of ecosystem services. The i-Tree Eco is a widely applied method for quantifying urban forest structure, ecosystem services, and values. Since its first release in 2006, i-Tree Eco has been successfully utilized in over 100 countries around the world. This study described one of the first applications of the i-Tree Eco international project in Kyoto, Japan, by customizing the models and parameters to enhance the accuracy of analysis results. Kyoto’s street trees are prominently dominated by Ginkgo (Ginkgo biloba L.), Trident Maple (Acer buergerianum Miq.), Japanese Zelkova (Zelkova serrata (Thunb.) Makino.), Tuliptree (Liriodendron tulipifera L.), Flowering dogwood (Cornus florida L.), London Planetree (Platanus × acerifolia), Plum/cherry (Prunus spp.), and Weeping willow (Salix babylonica), which account for 92% of the 1230 sample trees and deliver ecosystem service benefits at US$71,434.21 annually or US$58.07/tree/year. The annual value of each function was estimated at US$41.34/tree for carbon storage and sequestration, US$3.26/tree for stormwater runoff reduction, US$11.80/tree for adverse health mitigation effects, and US$1.67/tree for energy savings. The street tree species of Kyoto city that produce the highest average annual benefits are among the largest trees currently in the population, including P. × yedoensis (US$225.32/tree), Z. serrata (US$123.21/tree), S. babylonica (US$80.10/tree), and P. × acerifolia (US$65.88/tree). Our results demonstrated a comprehensive understanding of street trees benefits for Kyoto city, providing baseline information for decision-makers and managers to make effective urban trees management decisions, developing policy, and setting priorities.

Improving methods to calculate the loss of ecosystem services provided by urban trees using LiDAR and aerial orthophotos

2021 ◽  
pp. 127195
Author(s):  
Karolina Zięba-Kulawik ◽  
Paweł Hawryło ◽  
Piotr Wężyk ◽  
Piotr Matczak ◽  
Patrycja Przewoźna ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Urban Trees
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