Name :Dorothy Hannah O. GumtangGrade: Grade 6

Deforestation Geography

DeforestationDeforestation is cutting down of trees .Deforestation has resulted in the reduction of indigenous forests to four-fifths of their pre-agricultural area.

South America, specifically Brazil. Also in Sri Lanka and Costa Rica ,Amazon and last but not the least Indonesia

Where does deforestation mostly occur?

Uses of forest to people:•Wood to make furniture;,•Wood pulp to make paper;•Latex from trees to make rubber products,;•Shelter to animals;•Fruit bearing;•Medical resources;•Provide oxygen and;•Soil fertility.

Global warming is caused by• increase of carbon dioxide because there are no trees to absorb the carbon dioxide.•Soil erosion • lack of oxygen

Why do we clear the forest?•Housing- increasing population need shelter to live in. •Agriculture- increasing population increases demand of food.•Transportation-building highways for international ways •Mining- underground resources

Impacts of deforestation •Loss of soil fertility- provide protection cover -Helps to maintain fertility of soil.-When it rains nutrient is dissolved and then absorbed by the roots.since,deforestation occurs the natural protection cover is now removed soil is exposed to the climatic change and so it losses its fertility

•Increase of greenhouse effect * Trees function like the lungs of a forest it takes in carbon dioxide and releases oxygen.*too much carbon dioxide present in air due to cfc’s in air conditioner and cars.•Less trees to absorb carbon dioxide(co2) ,more co2 present in the air, which leads to the greenhouse effect global warming. •*the destruction of habitat for the Amazonian Indian..

•Soil leaching -Loss of soil mineral and nutrient of top soil by running water.

Global warming effect towards humans:•Hole in the ozone layer •Melting ice caps •Haze•No protection from ultraviolet rays.

Advantages-•Increase of employment & income•A scenic resource for tourism •More land for settlement & farming to feed and to house a growing population,

The Ozone Hole

For nearly a billion years, ozone molecules in the atmosphere have protected life on Earth from the effects of ultraviolet rays. 

UV-B = earth gets the minimum effect of ultraviolet rays. since there is now a hole in the ozone layer UV-A is the ultraviolet rays with the maximum effects to living .

Measures to take to prevent deforestation

Practice of selective logging • Choose and

identify mature trees before cutting down the trees

Setting aside protected areas • Protected area by

the government • Left undisturbed

to allow natural vegetation to grow

Setting aside land as Indian reserve • such land

reserves, only the Amazonian Indians can clear the forest to build houses and grow food. they can’t sell these rights to anyone

ROOT CAUSES

poverty

Economic development.

Government policies.

Root causes

Human

Actions

•Commercial logging •Building of roads for accessibility •Mining activities•Small-scale farming,

HUMAN ACTIVITIES

Environmental effects

ENVIRONMENTAL EFFECTS

Video 1 Video 2

Videos of Deforestation