论文部分内容阅读
林木是很有用处的材料,在国民经济上和人民生活中,占有很重要的地位。由于我国森林资源不足,分布又不平衡,全国现有森林面积仅760万公顷,占全国土地面积的7.9％,木材蓄积量大约为49亿立方公尺。这些森林,对我国工业、农业和各种建设事业的需要来说是相差很远的。我国森林资源不但少,而且每年还要遭受各种不同灾害的摧残,特别是森林火灾往往损失极大。一场火灾发生,就会把成片的森林烧光。有些地区受到的损害甚至超过了当地造林的面积。仅以1956年春季为例,全国共发生山林火灾15,900多次,被害山林面积300多万公顷,焚毁大小林木54,700
Forest trees are very useful materials and occupy an important position in the national economy and people’s lives. Due to the lack of forest resources and uneven distribution in China, the country’s existing forest area is only 7.6 million hectares, accounting for 7.9% of the country’s land area, and timber reserves of about 4.9 billion cubic meters. These forests are far from the needs of our country’s industry, agriculture, and various construction projects. China’s forest resources are not only small, but also suffer from various kinds of disasters every year. In particular, forest fires often have great losses. In the event of a fire, the forests will be burned out. In some areas, the damage has even exceeded the area of local afforestation. In the spring of 1956 alone, there were more than 15,900 forest fires in the country. The area of forests damaged was more than 3 million hectares, and the size of forests burned was 54,700.