When does the deciduous tree come to an end? The meaning of a leaf

Leaf fall is a unique phenomenon in the life of trees and shrubs. In order to answer the question of when the leaf fall of rowan, birch, aspen, maple or any other plant comes to an end, several factors must be taken into account. The region of growth of trees and bushes, the species of the plant community, the weather conditions of a particular season and some other features are very important. Listopad plays an important role not only in the life of specific plant species, but also all nature.

The importance of leaf fall in nature

Thanks to it, trees and shrubs regulate the evaporation process and the level of moisture consumption. In the cold season, the root system can not suck up from the soil the amount of liquid that would provide a full plant nutrition. To avoid death in winter, trees are forced to get rid of the leaves. Since it is this part of plants that requires the greatest amount of water.

On the branches that have been freed from the leaves, a lot of snow will not accumulate in the winter. Under its weight, branches and trunk will not suffer. Fallen leaves of trees and shrubs, dead parts of herbaceous plants are important elements in the process of soil formation. In the process of photosynthesis, a large number of toxic substances accumulate in leaf plates of plants. Releasing from harmful elements for growth and development occurs when leaves fall.
In rowan, birch, aspen, spruce, pine and any other plants, this phenomenon occurs in its own way. Phenological observations provide immense material for the study of deciduous phenomena.

When does autumn come in plant life?

As you know, the year is divided into four seasons. According to the calendar for autumn, the period from September 1 to November 30 is given. I must say that the division is conditional, and in the life of animate and inanimate nature these terms are never maintained.

This is due to the fact that the replacement periods for each species are set separately. For example, when the leaves of the mountain ash end and it prepares for the conditions of survival in winter, all annual plants have already completed the cycle of their growth by this time, and not before the calendar autumn.

Signs of Autumn in Nature

The approach of autumn is marked by certain signs. They can be seen both in living and in inanimate nature.

Reducing the duration of the day and lowering the average daily air temperature is one of the main indicators that affect the life of wildlife. The air temperature from plus 15 degrees with a gradual decrease to zero refers to the autumn period. It is with such indicators that changes begin in the life of most plants. So, the duration of daylight hours and the average daily temperature regime indicate when the leaf fall begins in rowan, birch, oak, aspen and other deciduous plants.

Folk signs

Based on centuries of observations of nature, which are conducted by people, signs are composed. It is possible to predict the nature of the upcoming season, the quantity of vegetables, fruits, and grain crops. I must say that the reliability of many signs is very high, and today scientists can explain and justify their essence. When the leaves fall near the mountain ash, bright red berries are very noticeable on its branches. One of the signs says that the rich harvest of mountain ash is to severe winter. But the same fact points to the fact that when the tree blossomed, the weather was fine, and the bees were not prevented from pollinating its flowers.
In the people it is commonly believed that when the leaves fall off the ashberry, lilac, the pre-winter period begins. Before the winter there are only days left.