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我国国土面积现排名第二,而人均占有森林面积排名在第130位之后。我国每年用于建筑业的报废木材达上百万立方米,我国每年用于建筑业的钢材(模板和脚手架)达300万吨,报废钢材达50万吨,占用资金约60亿元,是我国现有建筑业资金的20％。我国每年都要花费大量外汇进口木材和钢材。 世界上的森林覆盖面正在锐减。我国的森林资源本就匮乏,大兴安岭的一场大火,使我们又增加了几许痛心疾首的感慨。伐一片树木,大约只需几小时,而成长一片树木,却需要十几年甚至几十年。如此下去,你预测到了将来的后果吗?
China’s land area is now ranked second, and per capita possession of forest area is ranked 130th. In China, millions of cubic meters of scrap wood are used every year in the construction industry. China’s annual steel used in the construction industry (templates and scaffolding) amounts to 3 million tons, scrap steel amounts to 500,000 tons, and takes up about 6 billion yuan in funds. It is China. 20% of the existing construction industry funds. Every year, China spends a lot of foreign exchange on imported timber and steel. The world’s forest coverage is declining. Our country’s forest resources are scarce, and a major fire in Daxinganling has added to our emotions. It takes only a few hours to cut a tree. It takes more than ten years or even decades to grow a tree. If so, do you predict the future consequences?