据全国森林资源清查资料统计。我国现在的森林覆盖率仅12.98％(不包括灌木林),可供采伐的成过熟林蓄积只剩26亿立方米。由于森林数量和质量的下降,建国以来我国的水土流失面积增加到40万平方公里,水土流失总量为50亿吨,相当于全国耕地每年损失1厘米厚的沃土层。触目惊心的数字 According to the national forest resources inventory statistics. At present, China’s forest coverage is only 12.98% (excluding shrubbery), and only 2.26 billion cubic meters of accumulated mature forest is available for harvesting. Since the founding of the People’s Republic of China, the area of ​​soil and water loss has increased to 400,000 square kilometers and the total amount of soil and water loss has reached 5 billion tons, equivalent to a fertile soil layer losing 1 cm per year in the country’s arable land. Amazing figures