Forests

Birds sing at the choir of dawn, monkey screams, frogs call, insects ring the hum. The clear waterfall is perfect for afternoon swimming. Fireflies light trees at night

From the tropics to the tundra, the beauty and tranquility of the forests around the world stimulate us all. Eight species out of ten species found on land inhabit the forest. Especially about 300 million people in developing countries live in the forest.

However, the threat to the world's forest is rising. Due to population growth and changes in diet, agricultural expansion is responsible for the majority of world's deforestation. Illegal and unsustainable logging is usually caused by the demand for cheap timber and paper, is the main cause of world's forest degradation and the biggest threat to the world's forests. In degraded forests, small trees, shrubs and plants are often badly damaged or killed, rivers are polluted, slopes are eroded.

The threat is very serious and we are losing a big forest at an amazing speed. Amazon is the largest tropical rain forest on Earth by human activity and has lost at least 17% of the forest area during the past half century - mainly to build trees to build new or larger farms and meadows To clean

WWF is striving to tackle the threat to the forest: by 2020, we must protect the world's forests to defend the nature's diversity, benefit the climate, and support human well-being Hmm.

Much of WWF's work is done in the tropical rainforest, the most complex forests of Amazon's Earth's forest, the Congo basin, Greater Mekong and other equatorial parts. However, it also occurs in warm regions such as the Russian Far East and the United States.

Collecting data on forest health is an amazingly big job. ForestGEO monitors 65 forests in 28 countries, of which more than 6 million forests represent about 10,000 species, each forest monitoring plot ranges from 50 acres to 100 acres. In each figure, scientists are physically communicating with each tree. "It requires a lot of work and forestry and botany skills," Anderson-Teixeira says. "In each plot, each tree over 1 cm in diameter (finger size) is drawn on the grid, identified, measured, given a permanent marker, and is usually revisited every five years."

ForestGEO was a grassroots alliance of scientists who were originally interested in the health of the forest. Today it is the only research forest network that standardizes these protocols for all kinds of forests around the world. "This makes us in a special position to compare us.We are studying larger plots and smaller tree sizes than the most typical forest plots.It is concerned with the data and the types of problems we can ask for Anderson - Tesila said they are learning about the poor health patterns that are beginning to emerge in the world's forests, they experience trees drought, forest fires, permafrost melting, diseases and pests They are the products of climate change or the factors of climate change but they also show that some species and some forests are more resistant to these changes than others I saw that there was power.

Certain trees in the forest grow together with each other due to similar soil, moisture, climate, topography and past history. These tree species communities are called forest types and can be classified as forest type groups. Broadleaf type forest type groups (hardwood deciduous trees such as oak, poplar, maple) are the most common in Michigan forests. It accounts for about 75% of the forest area. Conifer forest type groups (consisting of pine, spruce and cedar trees) occupy the rest. The two largest forest type groups in Michigan State are Maple Eucalyptus (commonly known as Northern Hardwood), with 6.7 million acres of area and 3.4 million acres of white birch (Figure 2).