Climate Change


Aug

24

2018
Smart Territories – Efficient Solutions by Letter Engineers

Smart Territories – Efficient Solutions by Letter Engineers

“NATIONAL PLAN OF INTELLIGENT TERRITORIES. A strategy for a “smart Spain” that seeks to maximize the opportunities offered by the proper use of digital platforms to provide better public services in the city and in rural areas, and where Letter Engineers has much to offer”

Energy Efficiency: the starting point of an Intelligent Territory

Since 2007, European 20/20/20 targets were established:

  • 20% reduction of greenhouse gas emissions (in relation to 1990 levels)
  • 20% renewable energy in the EU
  • 20% improvement in energy efficiency

In Spain, there have been multiple strategies and announcements, focused on the Energy Efficiency of our towns and cities, since consuming more efficiently helps us to achieve the targets and we also contribute to reduce our Carbon Footprint.

“We have a common challenge: to plan, manage and govern our cities in a sustainable way, maximizing economic opportunities and minimizing environmental damage”

All this has given way to the use of digital platforms able to manage efficiently:

  • ENERGY CONSUMPTION OF PUBLIC LIGHTING
  • EFFICIENT WATER CONSUMPTION IN THE IRRIGATION SYSTEM OF PARKS AND GARDENS.
  • EFFICIENT ROUTES IN WASTE MANAGEMENT
  • INTELLIGENT ROUTES IN PUBLIC TRANSPORT

hence, the goal of transforming traditional cities into “SMART CITY”.

To make all of us much clearer, a Smart city is a sustainable and innovative city, since it uses Information and Communication Technologies (ICT) and other means to improve decision-making, the efficiency of operations, the provision of urban services and their competitiveness.


Although it is many steps to go in parallel in Spain it has unveiled NATIONAL PLAN OF TERRITORIES INTELLIGENT, which is part of the digital strategy for Intelligent Spain and it is aligned with the described context and target of the Smart City.

What is a Smart Territory?

The term intelligent territory comes after the peculiarity of our cities and our environment, since the city must be treated as an entity whose boundaries go beyond proper limits. All this is because our cities are included in a much larger area connected to other nearby municipalities.

Another new feature included in this National Plan is the integration of strategy in our rural areas, with the approach of developing a policy named SMART VILLAGES. And it is that 82.8% of the Spanish municipalities are rural and they occupy 72.8% of the total area of the country.

What role does Letter Engineers in the development of Intelligent Territories?

Since the beginning in 2013, LETTER INGENIEROS has opted for technological innovation as an intelligent solution in the energy management of a city or town.

Our team is not only made up of engineers and environmentalists who are experts in energy efficiency, but also supported by the management platforms developed by our Innovation and Development department, composed of computer engineers and experts in the development of applications.

This is the case, for example, of the EFILUX intelligent management platform, which allows the visualization and search of lighting inventory as well as energy management and maintenance.

This platform has been developed with the latest technology to work quickly and efficiently, with a simple, intuitive and clean interface. It also allows to visulise absolutely all the characteristics of any point of light, control center or part of the installation as well as to manage the electronic invoices and to locate disagreements.

Being a management platform of own development allows us to adapt it to the needs of each customer, being functional for another type of management, such as: EFFICIENT MANAGEMENT OF IRRIGATION OF PARKS AND GARDENS, among other functions.

The proposed Telemanagement and Energy Efficiency system will allow a complete management of the maintenance from the control center as well as from the work posts of the maintenance staff, both in their facilities and on the street.

Letter Ingenieros is committed to the smart development of our cities and rural environments as the only solution to sustainable development.


Aug

17

2018
Vehículos Eléctricos en punto de Recarga

Experts in Exterior Electricity Projects – Recharge Points

One of the great challenges of this society is to achieve the change of the current energy model for another more sustainable, more efficient, more environmentally friendly and, of course, to ensure an improved social and economic world

That is why, and the unsustainability of the current energy model based on the consumption of fossil fuels that has so many harmful effects for all of us (when I say of harmful,  I not only am referring to climate change), that the Electric Vehicle is being introduced in society as a GREAT alternative to our system of public and private mobility.

While it is true, we still have many who have doubts and especially when we think: where do I plug it if I go on a trip? … since, in many territories, there is not yet a recharge network that gives us peace of mind when we move our electric vehicle. To do this, there are a number of existing aid to carry out investments in charging equipment for electric vehicles.

Aids to encourage the use of the Electric Vehicle

In Andalusia, within the Intelligent Networks area of the Program for the Sustainable Energy Development of Andalusia we find very interesting incentive lines that have the following aims:

PROMOTE THE TRANSFORMATION OF OUR COUNTRY TOWARDS A SMART CITY MODEL, THROUGH A SUSTAINABLE ENERGY DEVELOPMENT THAT IS RESPECTFUL TO THE ENVIRONMENT

With this aid: what is encouraged?

The purpose of this line of aid is the development of infrastructures that facilitate the use of electricity, or the use of gas or hydrogen in the transport of people or goods, with actions such as:

CHARGING FACILITIES FOR SINGLE USE

RECHARGE FACILITIES PUBLICLY AVAILABLE

O RECHARGE ADVANCED FACILITIES

and for municipalities with fewer than 20.000 habitants, the percentage of aid can reach up to 70% of the fundable costs.

How can Letter Engineers help you?

Letter Engineers experts in efficient energy management systems, has a technical office formed by experts from various branches of engineering and environment, who are responsible for advising our clients and potential clients on fundable projects, such as those related to the Electric Vehicle

In addition, in our engineering department LETTER ING we have experts electrical engineers in ELECTRICITY OUTSIDE and relaxed experience in technical assistance for project development, preliminary and tender documents, design and project development, licensing, environmental impact studies and management of projects of this type.

Do not hesitate and contact our experts, a sustainable future is possible if we all take part.


Aug

10

2018
Estación de recarga TESLA de vehículos eléctricos.

The electric vehicle, how does it work?

Because of the major environmental problems, congestion in cities, their high levels of pollution, and the new energy framework of Spain, the electric vehicle is taking a special role in our daily conversations.

How does an electric car work?

From Letter Engineers, we will try to explain in a clear and simple way how an electric car works. For this, we will focus on its two fundamental parts: the electric motor and the battery.

Basic concepts

The first thing we have to understand is the concept of current as well as the two types of current that we have, continuous (DC) and alternate (AC). The current is basically the flow of electrons through a conductive medium such as a cable. Depending on the amount of flow we have more or less amperes (A), which is how the intensity or electric current is measured. For the electrons to move, a potential differential (Volts) is necessary, just as a river needs a height difference for the water to run.

If the flow of electrons is more or less constant and in one direction, from one pole to another, we are talking about direct current. On the other hand, if the flow changes every certain time (cycle), we will have alternating current. In Spain these cycles are 50 Hz, meaning the direction changes 50 times per second.

Normally we will use direct current for small electronic devices to about 24V. We use the alternating current for more voltage, for example at home we get 230V in single phase (one phase) and 400V if we had a supply in three phase (three phases). We use alternating current because unlike the continuous one it can be increased or decreased its voltage easily in transformers. If we want to move electrical energy at a great distance we will increase its voltage at the cost of decreasing its intensity so that we will have less losses (Ohm’s Law). The great advantage of direct current is that we can store it, chemically, for example in a battery, then we will see how. This is how our mobile works.

The device that converts alternating current into continuous is called a power supply, while the device that converts the continuous current into alternating current is called an inverter.

The product of the current (A) by the voltage (V) gives us the power that is measured in Watts (W); Well, this is not entirely true, but we can do for now. Do not confuse the power in W with the energy that is measured in Wh. Energy is the product of power by time.

We have summarized the most to make it clear and simple, however, if you have questions on these concepts you can contact us so that we expand these fundamentals.

Traction Battery

It is one of the most important parts of an electric car. Not to be confused with the service battery that is 12 or 24V we currently have and that feeds the lights, radio, etc.

The traction battery is a set of cells that store continuous electrical energy in a chemical way. Electric power is obtained from an external plug (at home or on public roads where we already know that it is alternating energy), but the battery has to arrive in continuous mode so we use a power source (known as a charger).

The BMS monitors the loading and unloading status of each cell, let’s say it is the one that controls the battery. It is very useful to manage, for example, fast loading. Here what we do is take each cell up to 80-90% of its capacity leaving the rest free. In a battery which is the longest completely filled cell and fast charging it makes use of this topic.

Electric motor vs combustion

Due to Nikola Tesla in 1893, today we have AC motors, a simple way to convert electrical energy into mechanical. Due to mechanical energy we can move the wheels of a car passing previously by the transmission shaft.

An electric motor is nothing more than an enclosure where you have a stator (fixed part) and a rotor (moving part). Depending on the engine type we have some magnets which have a power to create a electromagnetic fields that move the rotor. The good thing about this is that investing in the engine cycle can act as a generator and spend mechanical energy into electricity. This is used to store energy in the battery taking advantage of braking and lowering.

Most electric cars are powered by a three-phase AC motor. From the battery, where we know that we have continuous power, we need an inverter to pass it to AC. Depending on the energy that passes through the engine we have more or less revolutions (RPM) and therefore power. Out of curiosity comment that we can reach 15,000 or 20,000 RPM. The maximum power in an electric is obtained from the initial moment since we have the maximum torque.

A combustion engine (those of a lifetime) instead of electricity works by combustion of a fuel (gasoline, diesel, gas …) in an explosion-compression engine in pistons. The main problem is that as a byproduct of the reaction, gases are generated that, depending on the fuel, are more or less polluting.

An electric motor is much smaller than a combustion engine and with many fewer parts. We also have much less friction parts and therefore less maintenance. The power curve in an electric motor is linear and we have all the power available at the start, however, in combustion we have little power at low revolutions. This causes that in an electric we do not need a gearbox.

Electric car charging point


Jul

20

2018
Nuevo Panorama Energético Español

Energy Transition in Spain. We explain it to you

“The most difficult thing is to leave from a model where there is a series of investments and positions created, towards another much more plural, diverse and positive energy model”

“It’s time for sustainable development” words of Teresa Rivera, Minister of Energy and Environment.

For any citizen is becoming common to hear talk about “decarbonisation of energy”. Mainly we need energy for the buildings and for the transport leaving aside other uses such as the industrial one. We are going to focus on analyzing what is happening in these two sectors with the energy transition that we are already experiencing.

To understand the concept of decarbonisation we have to comprehend which the energy we need is obtained from fossil fuels (coal and gas in combined cycles), nuclear or renewable energy plants. According to the recent report by Spanish Red Electrica (REE) electricity demand in 2017 was supplied as follows:

The new Government, with Minister Teresa Ribero at the head, has already indicated its intention to finish in less than 10 years (2028) with the coal and nuclear power plants. We quickly realize that we will need 38.1% of the 252 TWh of current annual demand. We can already get an idea of the potential that renewables have in this transition.

On the other hand we have the issue of CO2 emissions. We all know which the nuclear ones do not have emissions and they contribute to reduce the global compute. This year we have increased our emissions by 5% and is expected to continue being done in the coming years. Therefore it is very important which everything is done very well analyzed as it is also expected that the ton of CO2 will pass in a few years to cost € 30 to € 100. Yes, you listened well, we paid for the emissions. We even pay for nuclear waste, in this case € 75,000 / year to France.

According to the International Labour Organization, throughout this transition process will be created four posts jobs for every one destroyed. The sectors with more opportunities: renewable in buildings, sustainable mobility with electricity and gas, energy management active and intelligent of smartcity. Among them are synergies as the exchange of energy between cars, urban equipment and buildings, all aimed to build cities of the future in which the citizen owns his energy, produce and consume.


Jun

07

2018
Letter Engineers, Member of the Clúster Andalucía Smart City

Letter Engineers, Member of the Clúster Andalucía Smart City

Recognized as an Innovative Business Group in 2015, the Clúster Andalucía Smart City is an alliance of private companies and Andalusian public institutions working for the development of smart cities, and of which LETTER ENGINEERS is already a member.

Andalucía Smart City

The Cluster Andalusia Smart City is an alliance of private companies and Andalusian public institutions that work for the development of smart cities, understood as better cities for being efficient, sustainable and comfortable. Achieving this goal it is realized through cooperation among these entities, resulting in generation of employment and wealth in urban areas themselves by increasing business competitiveness.

What does Letter Engineers contribute to the Cluster?

The Andalusia Smart City Cluster is formed by different working groups such as the Energy Working Group, which develops its activity around the generation, distribution, consumption and energy saving in cities. Or Environment Working Group, articulated around the impact of cities on the environment, greenhouse gas emissions and water and waste management.

Letter Engineers has been working for efficiency for 5 years. Its powerful team of computer engineers, advised by the energy experts, have developed their own management tools and efficient control of public lighting, managing to manage large cities in a more sustainable and more respectful with the environment.

In addition Letter Engineers team composed of Engineers, Architects and Graduates are people with tradition and over 10 years of experience in the industry, making Letter Engineers company of great business value to the development of a more sustainable Andalucía.


May

30

2018
Adjudicado - Auditorías energéticas

Energy Audit in buildings of Talavera de la Reina – AWARDED

Letter Engineers company responsible for carrying out the work of “Energy audit and technical memory of the actions to be taken in buildings of municipal ownership in the town hall of Talavera de la Reina”.

Award to Letter Engineers: Contract requirements

As was already mentioned, Letter Engineers has been the company Awardee to carry out the Energy Efficiency project in several buildings in the municipality of Talavera de la Reina.

As an indispensable requirement for the Town Hall, it is that the results obtained from these Audits serve as the basis to fulfill the aims of the Feder Castilla – La Mancha Operational Program 2014-2020.

For this, Letter Engineers will perform the works according to the PROTOCOL ESTABLISHED BY THE BOARD OF COMMUNITIES OF CASTILLA – LA MANCHA.

The social center, the sports hall or the fire station (among others) are the buildings in which the technical team of Letter Engineers will analyze, visit and study in detail all the facilities and equipment consuming energy. The aim is to propose a series of measures in line with the building energy saving, its use and its current situation.

What is an Energy Audit?

An energy audit is an analysis that allows us to know the mode of working, operation and performance of existing facilities, in this case, in a public building of municipal ownership, the state of its components, energy consumption and corresponding operating costs , with the aim of:

  1. Improve energy efficiency and energy savings of these facilities
  2. Adjust and adapt these facilities to current regulations

What technical means are necessary to successfully develop this contract?

The energy audit to be carried out and the team of Letter Engineers designated for it, complies with the provisions of RD 56/2016, of February 12, which transposes the directive 2012/27 / EU of the European Parliament and the council, of 25 October 2012 on energy efficiency in terms of energy audits, accreditation of service providers and energy auditors and promoting efficiency of energy supply, especially Article 8 thereof.

Energy Efficiency: Key to achieving European goals 2020

As indicated in Royal Decree 56/2016, of 12 February, which transposes Directive 2012/27 / EU of the European Parliament and of the Council, of October 25, 2012, relating to Energy Efficiency, this it is defined as an essential aspect of the European strategy for sustainable growth in the 2020 horizon, and therefore it is one of the most profitable ways to strengthen the security of energy supply and to reduce greenhouse gas emissions and of other polluting substances.


May

04

2018
Gestión Inteligente del Alumbrado Público – GreenCities

Gestión Inteligente del Alumbrado Público – GreenCities

Letter Ingenieros presentes en Greencities Málaga, un encuentro para todos los agentes implicados en la construcción de ciudades inteligentes. 

Greencities

Un año más, Letter Ingenieros ha estado presente en el foro Greencities, donde instituciones públicas y organizaciones privadas  hablan sobre las ciudades del futuro.

Stand Letter Ingenieros

Sostenibilidad, Accesibilidad, Movilidad, Conectividad, son los retos que se pretenden alcanzar cuando hablamos de ciudades inteligentes, puesto que la sociedad y nuestro planeta necesitan entornos que ofrezcan a la ciudadanía, un ambiente integrado, menos contaminado, cercano a la sociedad, eficiente, capaz de consumir menos recursos y generar menos residuos.

Pero ¿Qué es una Ciudad inteligente o Smart City?

Una ciudad inteligente se define como aquella que apuesta por mejorar la vida de sus habitantes y, a la vez, apuesta por la sostenibilidad, utilizando herramientas que permitan responder a los problemas y prestar mejores servicios públicos.

Por otro lado, el Libro Blanco Smart Cities indica que “el propósito final de una Smart City es alcanzar una gestión eficiente en todas las áreas de la ciudad (urbanismo, infraestructuras, transporte, servicios, educación, sanidad, seguridad pública, energía, etcétera), satisfaciendo a la vez las necesidades de la urbe y de sus ciudadanos”. 

Letter Ingenieros, clave de innovación en la gestión Eficiente del Alumbrado Público

Desde el Inicio, Letter Ingenieros se posiciona como una ingeniera experta en la gestión eficiente del alumbrado Público de una ciudad, no solo aportamos soluciones eficientes y de alta calidad para el alumbrado público de una ciudad, sino que aportamos soluciones de Gestión innovadora e integrada.

Gracias a nuestro departamento de innovación Tecnológica, nuestro  equipo de ingenieros informáticos,  han desarrollado una  plataforma de gestión inteligente que integra la gestión eficiente del Alumbrado público con otros servicios de la ciudad, como puede ser el Riego, la movilidad en bicicletas públicas o el estado de un punto de recarga. 

Una plataforma hecha a medida para las necesidades de cualquier ciudad. 

Para más información escríbenos a info@letteringenieros.es


Apr

09

2018
Certificados CMVP, CEM y Passivhaus. Mi experiencia

Certificados CMVP, CEM y Passivhaus. Mi experiencia

En este post, desde el punto de vista de opinión, vamos a repasar tres de los más importantes certificados internacionales que ha día de hoy tenemos a nuestra disposición los que queremos especializarnos en eficiencia energética

CMVP es el certificado del mundo EVO, que es la organización que desarrolla un procedimiento para la medida y verificación de ahorros energéticos.

CEM son las iniciales inglesas de Certificado Gestor Energético. Tanto CMVP como CEM pertenecen a la AAE (Asociación de Ingenieros Energéticos) que tiene sede en EEUU.

En mi caso obtuve el CMVP en 2011, mientras que, actualmente, me encuentro en proceso para obtener el CEM, puesto que me examino el próximo 2 de junio en Barcelona. Por tanto hay cosas que hasta que no las termine no las puedo valorar, pero por ahora ya tengo una idea clara de por dónde se mueve…

Por último, el certificado Designer Passivhaus (titulo que obtuve en 2017) tiene un enfoque totalmente orientado al diseño y evaluación de edificios de consumo casi nulo. Passivhaus es una organización que surgió hace unos 30 años en Alemania y que ya se ha extendido a todo el mundo.

Hablemos de ¿cómo conseguir los certificados? En los tres casos tienes que pasar por un curso de formación y además pagar derechos de examen. En mi caso EVO fue más caro porque eran los inicios, pero hoy en día todos los cursos rondan los 1.800€ más unos 200€ de tasas de examen. Otro tema común a todos ellos es que hay una puntuación mínima bastante alta para aprobar (7 sobre 10) y además en los tres casos puedes tener los libros durante las 4 horas que dura el examen.

Ahora vamos a centrarnos en los contenidos y su utilidad en el trabajo. La duración del curso en Passivhaus es de unas 90 horas, mientras que en los dos restantes se reduce a la mitad más o menos. Desde mi punto de vista los dos primeros tienen un enfoque más orientado a ofrecer servicios exclusivos que sin el titulo no puedes hacer, mientras que Passivhaus te ofrece los fundamentos teóricos en los que se basa la energética edificatoria. Ten en cuenta que este último está desarrollado por físicos mientras que la AAE dispone de ingenieros, así que cada uno tiene su enfoque: fundamentos técnicos VS fundamentos prácticos.

En los últimos tiempos, las administraciones públicas están solicitando este tipo de certificados para poder optar a concursos públicos. Debido a ello las matriculaciones en estos cursos está aumentando en gran medida. No olvidemos que en torno a los certificados gira un gran negocio y que no acaba ahí la cos, pues en los tres casos tenemos que re-certifcarnos cada tres años.

Hoy en día la especialización es algo vital para que una empresa sobreviva. En Letter Ingenieros estamos comprometidos por conocer bien el mercado y por la formación de calidad, así que consideramos que certificarse en muy útil para diferenciarse de la competencia. 

Para terminar te contaré lo que yo haría si tuviera que elegir uno de ellos para comenzar mi especialización en energía. Si te dedicas a la eficiencia pero fuera del ámbito de los edificios huye del Passivhaus pues no tiene sentido. Estoy hablando de aquellos que trabajan en alumbrado público o industria. En este caso yo optaría por el CEM y hacer EVO como complemento o si vas a implantar medidas de ahorro. En el resto de casos, creo que elegir Passivhaus te va a dar un extra de conocimientos teóricos que ningún otro te puede ofrecer. Además de cara a la nueva normativa que ya llega, pienso que es el certificado con más recorrido que tendremos en España. Espero que te haya gustado, si tienes cualquier duda podemos hablarlo en los comentarios, en privado o en las redes sociales de Letter


Mar

28

2018
New Announcement: Climate Projects

New Announcement: Climate Projects

The next day, April 10, 2018 will be the Call 2018 for the selection of Climate Projects, referring to projects to reduce CO2 emissions in Spain in diffuse sectors whose emissions reductions can be acquired under the FES-CO2 Carbon Fund.

Aid Program: Climate projects

The Climate Projects of the Carbon Fund for a Sustainable Economy (FES-CO2) are projects to reduce emissions of Greenhouse Gases (GHG) developed in Spain.

The Climate Projects, promoted through the FES-CO2, are designed to mark a path of transformation of the Spanish productive system towards a low carbon model.

The climate projects will be located in Spain and will be developed in the so-called “diffuse sectors” (not subject to the European emission trading scheme), such as the transport, agriculture, residential or waste, among others.

The reductions of emissions acquired through the FES-CO2 will require the fulfillment of a series of requirements, among others, those established in article 7 of RD 1494/2011, of October 24, which regulates the Carbon Fund for a Sustainable Economy:

  • Be additional to those derived from the sectoral regulations established in the current legislation that apply to them.
  • Proceed from facilities and sectors not subject to the emissions trading scheme.
  • Be measurable and verifiable, so that they are reflected in the inventory of greenhouse gases in Spain.
  • They will be calculated in accordance with methodologies to be approved by the Governing Council.

There are two types of Climate Projects:

It corresponds to the project that includes one or several defined activities, with a specific start date for each of them.

It corresponds to an expanded approach to project that includes several activities that are progressively added to the program, allowing similar activities and are distributed in different geographical areas of Spain, can be grouped into the concept of a program. In addition, under this concept of program, the gradual adhesion of activities that fit into a common denominator is allowed, that is, they propose the same type of action.

The documentation will be updated at the time of opening of the call. In this way, on April 10 we will inform you again.

However, the approach will be similar to that of previous years so let’s prepare the models, Letter Engineers as always is here to advise you.


Oct

18

2016
Póngame una cubierta verde …

Póngame una cubierta verde …

El siguiente paso de la eficiencia energética será la creación de ecosistemas integrados… 

A pesar del título del artículo y para los que aún  lo desconozcan, una cubierta verde no es ninguna bebida,  ni comida; es el techo de un edificio que está parcial o totalmente cubierto de vegetación, ya sea en suelo o en un medio de cultivo apropiado. No se refiere a techos de color verde, como los de tejas de dicho color ni tampoco a techos con jardines en macetas. Se refiere a tecnologías usadas en las cubiertas para mejorar el hábitat o ahorrar consumo de energía, es decir tecnologías que cumplen una función ecológica.[2]

Nomeolvides

En los últimos tiempos se ha hablado de los grandes beneficios que tiene la instalación de una cubierta verde en las terrazas de nuestros edificios para favorecer una correcta y mejor eficiencia energética en las edificaciones. Pero más allá de la eficiencia energética, que ayuda a mantener un estado de confort en las estancias del edificio con un menor consumo energético y su consiguiente ayuda al medio ambiente. Hoy quiero darle un vuelco a la instalación de una cubierta verde en nuestras terrazas  hacia una visión más de biodiversidad como bien se muestra en la definición, que de eficiencia energética en sí.

Las cubiertas verdes más usuales en nuestro territorio están compuestas por plantas tipo gramíneas como Festuca sp u otras de porte erguido  normalmente del genero Sedum sp. Especies que sin lugar a dudas pertenecen a nuestra lista de especies botánicas de la península (plantas autóctonas) y están presente en un sinfín de series de vegetación que son “el conjunto de comunidades que se suceden, en una localidad dada, desde el estadio inicial de colonización vegetal hasta el estadio climático terminal” [3]. Además de esto, se  añade su bajo mantenimiento y los bajos  requerimientos hídricos. Pero viendo estas congregaciones florales en nuestras terrazas desde el punto de vista de biodiversidad, no recrean el  gran valor ecológico que se podría obtener de otro tipo de composiciones para nuestras ciudades.

 

Construyendo ecosistemas

Se trataría en este caso, de no utilizar una única especie botánica. Si no de construir las cubiertas verdes con un rango amplio de especies de la serie de vegetación del lugar. Estas especies van desde plantas herbáceas como los nomeolvides, narcisos, orquídeas, prímulas; hasta plantas con porte arbustivo bajo como agracejos, majoletos, romeros y lavandas.

Narciso

No es algo caprichoso esta selección tan variada de especies, pues se trataría de recrear un pequeño fragmento de nuestros bosques en nuestras cubiertas. Claro está, sin las especies arbóreas tipo encinas, pinos, etc. De tal manera que esta gran asociación de especies botánicas  junto con la fauna vertebrada e invertebrada que colonizarían estas zonas,  generarían pequeños ecosistemas distribuidos por nuestras ciudades propulsores de biodiversidad “in situ”.

Y no solo se obtendría  una amplia biodiversidad y recreación a una escala más pequeña de nuestros bosques. Si no que además  de esta forma se podrían construir atendiendo a las especies botánicas seleccionadas para nuestra cubierta verde, verdaderos jardines medicinales si la selección ha atendido a flora medicinal como manzanilla, hipérico, romero, árnica, etc. Jardines de ocio y relajación si dicha selección de plantas ha girado entorno a plantas aromáticas y con flores vistosas. Huertos urbanos en cubiertas con una selección más agrónoma e incluso una temática didáctica ambiental. 

La disposición y elección de una cubierta verde no debe verse únicamente  como una medida efectiva de eficiencia energética, si no como lugares donde se puede llevar a cabo acciones de conservación y gestión de la biodiversidad alojada en las grandes urbes.



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