DeforestationDeforestation

Tropical forestTropical forest

-Amazon--Amazon-

Introduction of AmazonIntroduction of AmazonAmazon is a tropical forest in Brazil.Amazon is a tropical forest in Brazil.Forests occupy 66.4% of Brazil. Forests occupy 66.4% of Brazil. 20% of the Amazon has disappeared in the last20% of the Amazon has disappeared in the last40 years. Amazon accounts for one thirds of oxygen40 years. Amazon accounts for one thirds of oxygenbalance of our earth. balance of our earth. 100 species of animals and 100 species of animals and plants are in dangerplants are in dangerof becoming extinct every day.of becoming extinct every day.

Soil of AmazonSoil of AmazonTrees of Amazon are about 70m tall.Trees of Amazon are about 70m tall.Compared with trees’ tall, the Amazon’s soilCompared with trees’ tall, the Amazon’s soillayer is a few centimeters. So, when the trees arelayer is a few centimeters. So, when the trees arecut and burned, rainwater washes the thin layercut and burned, rainwater washes the thin layerof soil away and the land becomes of soil away and the land becomes wasteland.wasteland.　　 Once the balance of Once the balance of nature is lost, the trees die of nature is lost, the trees die of disease and it is difficult to recover. disease and it is difficult to recover.

DesertificationDesertificationDesertification is caused by deforestation,Desertification is caused by deforestation,agriculture and pasturage.agriculture and pasturage.Redundant demand for wood promotes Redundant demand for wood promotes desertification. And desert desertification. And desert doesn’t grow plants.doesn’t grow plants.So desert areas don’t have So desert areas don’t have foods. Food crisis spreadfoods. Food crisis spreadall of the world. all of the world.

YakihataYakihataYakihata is traditional agriculture of tropical Yakihata is traditional agriculture of tropical

forest in Amazon or Oceania etc.forest in Amazon or Oceania etc.

Yakihata is agriculture that cultivates landYakihata is agriculture that cultivates land

with poor soil and makes fertilizer with poor soil and makes fertilizer

by using ash of the forest.by using ash of the forest.