Over the past 10 years, China has made much headway in its afforestation and soil conservation. For instance, the national forest acreage has increased by 13.7 million hectares since the fourth national survey on forest resources in 1990. Despite these great achievements, some serious problems still remain to be solved such as how to improve forestry in the western area in the course of its economic development.
Forestry build-up in the west is a long-term task. In order to have this goal materialized, I think some concrete and effective measures should be taken immediately. For example, to protect the natural environment of the west, some previously cultivated areas should be returned to forest and grassland. In the course of improving forestry, some strict laws should made and their enforcement must be guaranteed. Those who violate forest protection laws must be（） severely punished. Only by taking these effective measures can forestry in the western area be improved.
Water is a precious resource. Although we are surrounded by it in oceans, lakes, rivers and streams, our supply is limited. The chart given shows that most of the water on earth — 97.4 percent — is salt water stored in oceans. Only 2.6 percent of the earth's water is fresh water, and 2 percent is locked up in ice caps and glaciers. Thus the fresh water left for us to use is only 0.6 percent of the total water supply.
There will never be any more fresh water than there is now. In fact, the earth is short of fresh water. Besides, the increasing growth of the world population, the growing demand of industry for water, the serious pollution of our environment — all this makes the world in danger of running out of fresh water. In some large cities such as Tianjin, fresh water cannot meet the daily needs.
Since water is essential to all life and the supply limited, we must manage it intelligently and carefully.
蒙田範文網