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When walking along a path next to the Llanera river, next to the town of Torà de Riubregós, we saw little flow of water but many leaves on the riverbed, giving the sensation of seeing a river of leaves, as seen in the Photos of the Readers of La Vanguardia.
The Riera de Llanera is a right tributary of the Llobregós. It originates in the plane that extends to the southwest of Hostal del Boix, although in the region it is also considered that the Riera de Llanera as such originates at the confluence of the Barranc de Santa Maria with the Rasa d’Ardèvol.
Torà is a town and municipality in the south center of the Solsonès administrative region, bordering Llobera to the north, Pinós and La Molsosa to the east, and Biosca to the west. In 1968 the territory of the term of Llanera was annexed to Torà.
The municipal term includes the entire valley of the Riera de Llanera up to its confluence with the Llobregós river. On March 21, 2023, the change of regional and vegerial designation entered into force, whereby Torà was separated from Segarra and incorporated into Solsonès.
The leaves are intended to take energy from the sun through photosynthesis and provide nutrients to the plant for its development and growth.
At this time of year, deciduous trees leave behind their green colors and turn orange, yellow and reddish. Then they lose the leaves because they are no longer useful and they change them for new ones. Since there are fewer hours of daylight these days, the intensity of solar radiation is lower.
Not being able to fulfill their purpose, trees get rid of their leaves, since it is more difficult for them to maintain them than to lose them and spend a time of low activity and rest.
Chlorophyll is what makes leaves have their characteristic green color. It is found in the leaves of plants and is the pigment responsible for photosynthesis and responsible for absorbing solar radiation.
It is the central nucleus and driving force of plants and during summer and spring it is the most abundant pigment. As it is not very stable, when the days are shorter and the temperatures are cooler, it decomposes and begins to cease to be present.
When chlorophyll begins to decompose, the yellow color typical of carotenoids remains. Anthocyanins are responsible for the reddish colors and are another pigment present in the leaves. The food left over from a leaf (glucose) can also give those tones to the leaves.
