These two qualities together, allow the temperatures reached in a green cover are lower than those

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In the article we present today we develop some of the main benefits of cover crops compared to conventional covered by data from different studies.
During the summer months, urban areas can reach temperatures of 1 to 4.5 C above those with their surrounding areas, a phenomenon known as the heat island effect. table top food warmer The gradient varies, depending on the climate, topography and urban design.
One of the main reasons the heat island phenomenon are extensive surfaces having built the cities, table top food warmer where solar radiation is absorbed and accumulates as heat slowly emerges throughout the night. This phenomenon can be quantified by parameters such as the albedo, which refers to the amount of reflected radiation on a surface, in relation to the total received. Expressed in% with 0 being the lowest percentage table top food warmer of reflection, and therefore leading to increased heat absorption by the surface. The albedo of an asphalt roof finish is approximately 8%, while a green tire is 25%.
Moreover, the ground cover, besides having a greater ability to reflection of solar radiation, also cool the air in its surface known as transpiration process where the plant absorbs moisture from the ground and ejected in the form of vapor water.
These two qualities together, allow the temperatures reached in a green cover are lower than those of the conventional tire. As a covering of asphalt can reach 70 in a summer table top food warmer day, a surface finishing plant does not usually table top food warmer exceed table top food warmer 26 C.
The Environment Agency of Canada conducted a study which concluded that planting at least 6% (6.5 million square meters) of surface coverings Toronto could be reduced by 1-2 C air temperature in Summer city.
The development of our municipalities leads to a loss of soil permeability, table top food warmer which prevents rainwater can filter through the streets finishes and although it has sewage systems, many times these are insufficient address table top food warmer major downpours.
Mulches have the property to retain rainwater, reducing the number of liters to evacuate in time that are occurring table top food warmer rainfall. The storage capacity depends on the design of the cover, but in all cases the existence of these constructive solutions involves a reduction in the amount of runoff water to evacuate the system and a decrease in velocity as the water is stored in the retaining layer and the substrate.
According to the German standard DIN 1986, Part 2, the coefficient of storm drainage for landscaped areas with a minimum of 10 cm thick, is 0.3. This means that only 30% of the rainfall drains and 70% is retained in the green roof or evaporates. FILTER table top food warmer POLLUTANTS AND CONSUMING SUBSTANCES CO2
Plants are able to absorb a certain amount of volatile toxic elements in the air, turning into organic matter. Much of urban pollution is formed by nitrogen compounds, predispositions traffic and industry. Plants capture these compounds and use them as nutrients. A green cover 60 m 2 is able to catch and process 15 kg of heavy metals. (Darlington, 2001)
This quality is supported by several studies. Bartfelder showed that in the central districts of highly polluted cities, heavy metals table top food warmer are taken up by the leaves (Bartfelder and Kohler 1986). Furthermore, measurements on a Swiss Federal Street resulted a hedge 1m high and 0.75m in width reduced by 50%, through its filter effect, table top food warmer lead contamination (mentioned by Lötsch 1981).
Another feature to consider is that particles of dust and dirt remain attached to the leaves and are then washed away by rain towards the substrate covers that also acts as a filter reducing the load of pollutants table top food warmer reaching sewers. 1 m2 of vegetation traps 130 grams of powder per year. (Darlington, 2001)
Finally, the plants in your process photos