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Urban Green Infrastructure in Latin America and the Caribbean: the case of San Salvador

May 26, 2022 por Borja Castro Lancharro - Ophélie Chevalier - Editor: Daniel Peciña-Lopez Leave a Comment

Este artículo está también disponible en / This post is also available in: Spanish


The cities of our region are called to play a key role in the fight against climate change and achieve the Paris Agreements and COP26 goals. As we mentioned in the first blog of this series, the Urban Green Infrastructure (UGI) is one of the best tools through which the municipalities of Latin America and the Caribbean (LAC) can adapt and mitigate the climate crisis in line with the objectives of Vision 2025 of the Inter-American Development Bank (IDB).

In today’s blog we share the experience of several municipalities in our region, the Metropolitan Area of ​​San Salvador (AMSS), applying UGI solutions with the aim of providing ecological, economic, and social benefits to its inhabitants. We hope that their example can serve as an inspiration for many cities in LAC.

Why is this type of tool necessary in the cities of the region?

The cities of our region are increasingly exposed to climatic disasters such as floods, heat waves, droughts, or storms. The UGI can complement climate change policies carried out by LAC cities by improving risk management and resilience, promoting sustainable urbanization, and restoring degraded ecosystems with all that this entails.

The IDB is aware of the efforts made by the municipalities of our region to respond to these challenges.. To respond to them, the IDB has recently published three manuals that can provide fundamental support to governments and urban service providers in making decisions about the most appropriate type of green infrastructure solution, evaluating the cost-benefit and act in accordance with the current regulatory framework. Likewise, these manuals are a first step to start mainstreaming the UGI in the planning codes, budgets and territorial ordering documents. Download them HERE to find out how your municipality can be the next one to adapt to the effects of climate change through UGI and nature-based solutions (NBS):

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Download here
Download here
Download here

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Why the Metropolitan Area of ​​San Salvador?

The AMSS municipalities have environmental problems like those of other LAC cities. However, the AMSS took a step forward and decided a few months ago to work hand in hand with the IDB to review its urban initiatives, to expand and systematize the inclusion of the UGI. Special attention was paid to the Safe Pedestrian Environmental Networks (RAPS) program, the public spaces program, the green and blue mesh program, and the Sustainable Urban Drainage Systems (SUDS) program.

How is the Urban Green Infrastructure being applied in the Metropolitan Area of ​​San Salvador?

After having diagnosed the programs and their manuals, the AMSS developed a strategic action plan. This was complemented by workshops aimed at the technicians of the programs with the objective of formalizing the implementation of the plan. The workshops included a battery of specific actions within an action plan for each urban program.

Like any project, the AMSS faced challenges. Today we share four of them, which may be useful for other municipalities in the region that wish to start the same process of transversal inclusion of UGI in their city.

EMPOWER

Both the users, as well as the actors in the urban space must realize that they “own” the public space. It is an essential condition to ensure interest and maintenance of investments. A good practice proposed for the AMSS b is campaigning through neighborhood associations, schools, and other local bodies.

MONITOR

With UGI, the challenge comes from the lack of baseline data and pre-intervention data. For this reason, the work must be carried out by defining a system of indicators (environmental, social, and institutional) that allow evaluating the performance of the solutions and comparing it with the initial situation. In case this is not possible, it can be done with a similar context in which there is no intervention.

TRAIN

There is potential for improvement so that the technical managers in the region, as well as the authorities involved, know the UGI and its management in the AMSS. Therefore, it is necessary to continue holding workshops so that those responsible at all levels are trained and committed to its implementation.

QUANTIFY

Economic quantification is one of the most significant challenges that local governments face in carrying out UGI projects. Several methods are currently applied, some of them estimates, which show reference values. Some of them are detailed in the next section.

Overview of San Salvador

How to quantify the economic costs of implementing UGI projects?

Based on the experience of developing an UGI strategy in the AMSS, we share some of the ways to quantify the cost savings derived from carrying out UGI projects in your city:

  • Calculation of avoided costs, such as the energy savings produced by the reduced need for refrigeration and improved thermal insulation. There are also studies that show how citizens who have UGIs in their neighborhoods save on medical costs, compared to citizens who do not have UGIs
  • Estimation of avoided damages, making direct comparisons with the previous situation where damages were produced, such as those caused by floods and other natural disasters
  • Income creation, when it happens, through various methods such as compensation for carbon emissions, taxes on tourism and any other income that comes from the presence of UGIs
  • Estimation of the local economy increase due to the greater supply of natural resources. It can be estimated indirectly from the benefits obtained by local businesses or the average spending of users, compared to the previous situation.
  • Calculation of hedonic prices, for nearby real estate, estimating the value of the asset considering the new characteristics that come from the UGI. On many occasions, estimates of the value of those properties benefiting directly from the UGI are made, such as an urban park, and they are compared with those that do not have that UGI
  • Direct quantification tools for ecosystem services, such as:
    • TESSA (Toolkit for Ecosystem Service Site-Based Assessment): which allows estimating the most relevant ecosystem services and what information is needed to quantify it
    • InVEST (Integrated Valuation of Ecosystem Services and Tradeoffs): it is one of the most used tools internationally and allows free identification and valuation of ecosystem services
    • I-Tree: developed by the United States Department of Agriculture (USDA), it allows an economic quantification of the services generated by trees in cities
    • SWAT (Soil and Water Assessment Tool): used to quantify changes in land and land use
    • MIMES (Multiscale Integrated Earth Systems Model): defines a framework designed to understand and visualize the value of ecosystem services by revealing transformations in natural, human, built and social capital through an interaction matrix

The IDB works for a green future in the cities of the region

With the commitment of the Metropolitan Area of ​​San Salvador, the IDB was able to apply the Nature-Based Solutions guide to a territorial entity, developing a strategy, training, and a roadmap for a pilot.

At the IDB’s Housing and Urban Development Division, we aspire to implement UGI solutions comprehensively in urban interventions throughout the region in the medium term. These can be through purely green solutions, or through hybrid solutions in which the traditional infrastructure is complemented. If you know of any initiatives in your city from SBN or UGI, do not hesitate to share them in our comments section. We will be happy to read you.

If you enjoyed this blog, sign up here to receive our monthly newsletter with all the blogs, news, and events from the IDB’s Housing and Urban Development Division.


Filed Under: Sustainable development Tagged With: climate change, infrastructure, sustainability, sustainable infrastructure, urban development, urban planning

Borja Castro Lancharro

Borja Castro Lancharro es un urbanista y paisajista con más de 15 años de experiencia en planificación urbana, transporte sostenible y cambio climático. Tiene experiencia tanto en el sector público como en el privado en Oriente Medio, Norte de África, Latinoamérica y Europa. Borja colabora con varias Instituciones Financieras Multilaterales como el Banco Interamericano de Desarrollo y el Banco Mundial en intervenciones de ciudades sostenibles e infraestructura verde urbana. Borja es Licenciado en Ciencias Ambientales, complementado con un Máster en Urbanismo y Ordenación Territorial, un Máster en Paisajismo y un Máster en Gestión Internacional de Empresas.

Ophélie Chevalier

Ophélie Chevalier is Lead Specialist in Urban Development and Housing at the Inter-American Development Bank. She has more than 20 years of experience in international development, which includes project management (identification, design, negotiation, execution and evaluation), preparation of sectoral strategies, policy dialogue with the authorities, and leadership of technical studies. At the IDB, Ophélie has specialized in particular in institutional strengthening, local development, housing subsidies, and neighborhood improvement programs. His current work also includes serving as the Urban Division's focal point for climate change and risk issues. Ophélie is a lawyer by training, with master's degrees from the University of Paris and Columbia University in New York.

Editor: Daniel Peciña-Lopez

Daniel Peciña-Lopez is a specialist in international affairs, development and communication. He has more than 10 years of professional experience in diplomatic delegations, and international organizations in cities such as Washington DC, New York, Chicago, Madrid, Mexico City and Hong Kong, among others. Daniel is Master of International Affairs from Columbia University, Master of Science from the University of Oxford Brookes and Licenciado from Universidad Complutense de Madrid. In 2010 Daniel received the First National Award for Excellence in Academic Performance, from the Ministry of Education (Government of Spain) for being the university level student with the highest average GPA score in the country. He currently works as an external relations/communication consultant at the Inter-American Development Bank.

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Este es el blog de la División de Vivienda y Desarrollo Urbano (HUD) del Banco Interamericano de Desarrollo. Súmate a la conversación sobre cómo mejorar la sostenibilidad y calidad de vida en ciudades de América Latina y el Caribe.

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