What Is The Green Great Wall?
In order to curb the expansion trend of the Sahara
, Africa ready to
plant a 7,000 km-long Green Great Green Wall, which is the solution it?
Desert expansion in the growing of their own sites, the earth has 20
million square kilometers per year of fertile land is swallowed, the
equivalent of China 1 / 50 of the land area! The harm caused by the
initiator is the man himself. As well as felling of trees planted in
arid areas over the wind and rain gradually taken away the surface soil
layer. But sadly, desertification in the event, it is impossible to
stop on their own. By 2030, there may be more than 20 million people
face their fertile land into desert scenes, and one-third of them live
in Africa.
Global desertification processes, bear the brunt of the African
continent, mainly along the front edge of the Sahel in sub-Saharan
constantly stretching. In this area, available water to the one when
the two. To resolve this vicious circle the only way to a variety of
trees. Because, to revitalize the land is no better way of life. First,
because the tree branches to wind, sand and dust to prevent invasion of
crops. Second, the leaves can also be decomposed to produce a loose and
fertile soil. Finally, the tree's roots to subsoil is divided into
lattice-like, so that more water infiltration, soil firmly down to
prevent being blown away.
What are we waiting for it, reach to the desert areas of forest species
do not like it? South of the Sahara some countries are considering this
issue. In recent years, people have been talking about to plant a 7,000
km long and 15 km wide wall of giant trees, to resist the Senegalese
capital Dakar and Djibouti from the Sahara desert between the sand. The
program is named "Green Great Wall." Planting a tree is so huge wall
will solve all the problems? Anyway, we all hope that African countries
can take positive action to curb the expansion of the desert, the green
Great Wall a reality.
by: fangcaoarlene
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