第 PAGE \* Arabic 2 页第 PAGE \* Arabic 2 页
三：原因：
社会原因：
forest clearing for crops and pasture, overcutting for fuelwood, uncontrolled commercial logging for timber and expanding infrastructure（基础设施）
冲突：address the underlying causes. These include poverty, hunger, access to land, a lack of jobs and income-generating opportunities, and growing economic demands for forest goods and services.
There are some social reasons cause the lost of forest,first, some forest lands are used for farming propose. Such as crops and pasture, second , uncontrolled commercial logging for timber and expanding infrastructure are also a very important point.
自然原因：
Fires, pests and diseases are causing increased damage to forests in some countries. On average, one percent of all forests was reported to be significantly affected each year by forest fires. Outbreaks of forest insects damage some 35 million hectares of forest annually. Extreme weather events such as storms, blizzards and earthquakes also took a heavy toll in the past decade
We can’t ignore the natural reasons that causes the damage to the forest, we can escape from the responsibility, and say that it isn’t all of our faults. forest fires storms, blizzards and earthquakes have done a lots of damage to the forest as is showed in the statistics.
四：保护森林的措施：
世界森林日？ 3、21 貌似
1）establish relevant laws to protect the forests law can change people’s attitude from we want to we must
2) use the publicity to raise people"s environmental awareness
3) speed the development of alternatives
But What can we do in our daily life? We can use two sides of a paper and as to the leaflets in our school , we can take it and use it for draft. instead of just throwing it away.
二：森林的作用：
Life in the trees
A single tree in a forest can be a home,
a food source, or a shelter for a variety
of animals. Often hidden from view,
there is a world of wildlife activity.