The topic of excursion was the environment. The problematic is that we need water for life and for cities. Firstly, students visited the rain garden around University and tried to find out how rain garden works. The rain water falls in the basin full of rocks and goes in the ground for plants and to the fountain. Secondly, they went on the roof of a building to observe the difference between a place with grass and one with asphalt.
Without grass: hotter +5 degrees more than normal. To use this kind of garden it is an option to change the climate. Big barrels collect the water from the roof. It is a good option to help the greenery living and solve the problem of not enough water in summer. Pipes are used to collect it under the ground. In the city, concretely, only few places are green with grass.
The new example is to show two parts of managing the environment: one with grass cut and one without. If you don t let the grass growing, humans destroy biodiversity. Butterflies and bees can’t live because they don t find food and shelter. In the city parks, they use the two parts: a path for people to walk, and areas for biodiversity (High grass) 46 species live in the small garden and students of university observe it just in front of the building.
There are about 600 different kinds of bees in Slovakia. A problem is that people are afraid to be stung by bees. In fact, most of them are not dangerous and give honey. At university they work on it by giving special artificial houses for bees. For good pollination honey bees need warm place.
The visit has finished with presentation of the compost which is used to reduce the waste.
Students has discovered that rain gardens are small-scale vegetated gardens used for storage and infiltration. They are typically applied at a property level and close to buildings, for example to capture and infiltrate roof drainage.