中国科学院生态环境研究中心向国家科委提交的预警报告中指出,我国面临的十大生态问题是: 占国土65%的山区和9.7%的生态环境脆弱带,开发利用不当,易形成大范围的水土流失。森林面积不断缩小,采伐量远远超过生长量。沙漠化危害严重,北方沙漠面积达149万平方公里,约占国土面积15%。 According to the early warning report submitted by the Research Center for Eco-Environmental Sciences of the Chinese Academy of Sciences to the State Science and Technology Commission, the ten major ecological problems our country faces are: mountainous areas accounting for 65% of the country’s territory and 9.7% eco-environment fragile zones, which are improperly developed and used, Soil and water loss. The area of ​​forest is shrinking continuously, and the amount of harvest far exceeds the amount of growth. Severe desertification, the northern desert area of ​​1.49 million square kilometers, accounting for about 15% of land area.