موضوع عن فوائد الاشجار بالانجليزي

موضوع عن the importance of trees

paragraph about the importance of trees in our life

write a paragraph of about 100 words about the importance of trees

the importance of trees essay

جمل عن الاشجار بالانجليزي موضوع عن فوائد الاشجار بالانجليزي برجراف عن اهمية النباتات بالانجليزي

benefits of trees موضوع تعبير عن الاشجار

Importance of Trees in our Life

 Short Paragraph on Trees

 Trees Are Important أهمية الأشجار فوائد الشجرة بالانجليزية فوائد الشجرة وأهميتها موضوع عن الشجرة وفوائدها  أهمية الشجرة في حياة الإنسان - تعبير كتابي عن فوائد الشجرة... خامسة ابتدائي

موضوع عن فوائد الاشجار بالانجليزي موضوع تعبير عن الاشجار موضوع عن قطع الاشجار بالانجليزي

موضوع عن the importance of trees برجراف عن اهمية النباتات بالانجليزي موضوع عن زراعة الاشجار بالانجليزي

paragraph about the importance of trees

write a paragraph of about 100 words about the importance of trees

paragraph about the importance of trees in our life

جمل عن الاشجار بالانجليزي موضوع تعبير عن الاشجار موضوع عن قطع الاشجار بالانجليزي

موضوع عن the importance of trees تعبير عن اهمية الاشجار بالانجليزي موضوع عن زراعة الاشجار بالانجليزي موضوع عن النباتات بالانجليزي موضوع انجليزي عن الزراعة موضوع تعبير عن الاشجار

موضوع تعبير عن اهمية الاشجار بالانجليزي وصف الشجرة فوائد الشجرة وكيفية المحافظة عليها

تعبير عن عيد الشجرة تعبير عن فوائد الشجرة وكيفية المحافظة عليها موضوع عن فوائد الاشجار بالانجليزي

The importance of the tree in human life and ecosystems

> Role of the tree in the ecosystem and in the life of man

The roles of the tree for man:

 Psychological role

The tree can enhance spontaneous attention and relax the sensory system. We can sharpen our concentration when we walk in green spaces. Studies have shown that hospitalized patients who can look at trees heal faster and suffer fewer complications than those who do not have access to this type of landscape. (FAO, 1995). In addition, many tree-dominated panoramas stimulate the psychological recovery because it provokes positive feelings, mitigates negative emotions such as fear, anger and sadness, can block or reduce thoughts that create nervous tension (Bory, 2000). )

 Role of relaxation and leisure

Trees provide a direct and / or indirect supply of shade and have a recreational value as they represent a playground and relaxation area for children.

 Soundproofing role

Trees and other types of vegetation can form screens that have the ability to reduce the intensity of noise generated by vehicular traffic on roads and by noisy industries. According to studies, about 20% of the population is bothered by the noise of the street. Noise can reach levels of 100 dB intermittently and 75 dB permanently near major urban roads. However, prolonged exposure to sound levels of 85 to 90 dB (A) may result in loss of hearing. To be effective the plant screens must be dense, tall and wide (25 to 35m wide), their efficiency is even better if they are located in close proximity to the source of noise.

 Decorative role

The use of plants in specific landscaping such as gardens, ornamental parks but also in more natural designs (bank vegetation) or more rigid (highway, building), allows to decorate and beautify the spaces, especially urban. Moreover the presence of the tree is reassuring.

 Role of disease treatment

Forests reduce infectious diseases. Undisturbed tropical forests can have a moderating effect on diseases caused by insects and animals.

Many plants are also used in African medicine. These allow gentle treatment of diseases of all kinds. In West Africa more than 80% of the population uses traditional medicine and medicinal plants for their primary health care.

The role of the tree for ecosystems:

 Role of fight against pollution

Trees also have an important role to play in air purification, they absorb and neutralize many gaseous pollutants (ozone, sulfur dioxide, etc.) and intercept particulate matter. Trees remove CO2 from the atmosphere, the most common greenhouse gas during photosynthesis and trap in woody biomass. Researchers estimate that a tree planted in an urban environment can sequester 5 to 10 times more carbon than a tree planted in rural areas.

 Role of fight against runoff and erosion

Trees intercept and store rainwater on the surface of leaves and branches, reduce descent to the ground, promote infiltration, reduce runoff and erosion, and delay the formation of peak flows. Urban forests can also serve as a living laboratory for environmental and urban education. They help bridge the gap between urban populations and forests.

 Protection role

The forest is home to 80% of the Earth's biodiversity. It protects the diversity and is the habitat of many animal and plant species.

> Impact of man on the tree: deforestation

4 centuries ago, 66% of the land was covered with forest, today only a third. Whereas in 1990 forests covered about 4.128 billion hectares or 31.6% of the world's land area, in 2015 they covered only 3.999 billion hectares or 30.6% (FAO, 2015). According to the World Resources Institute, 80% of the original global forest cover has been logged or degraded, mostly over the past 30 years. In total, some 129 million hectares of forest - an area almost equivalent in size to South Africa - have been lost since 1990.

All these figures are alarming and show an overexploitation of man, eager for conquest. Deforestation affects all tropical forests, especially in the Amazon, Equatorial Africa and Southeast Asia (Indonesia). These actions have important consequences, in particular because of all the roles that the tree assumes.

The consequences of deforestation

 The loss of biodiversity

Forests are home to more than 80% of terrestrial biodiversity and are one of the last refuges for many animal and plant species. This is why deforestation is a disaster for humans as well as for other species since it is estimated that 27,000 animal and plant species disappear every year because of it. This loss of biodiversity, which can be irreversible, cuts humanity away from invaluable services and resources. Indeed, food systems are highly dependent on biodiversity and a considerable proportion of drugs are directly or indirectly of biological origin.

For example, tropical forests provide a variety of medicinal plants for health care. 80% of people in developing countries depend on traditional medicines: 50% of them come from the forest. And more than a quarter of modern medicines are derived from tropical forest plants!