现在,各地新闻媒体关于林业的报道比过去多了。这些报道主要是表扬各地封山育林、植树造林、退耕还林还草的业绩的。而要报道这一业绩,就必定牵涉到一个森林覆盖率的问题。因为森林覆盖率的高低,是反映林业发展快慢的主要数据之一。可森林“覆盖率”这一概念是有严格科学界定的。一份由联合国环境保护组织撰写的联合国保护森林报告称:科学家们发现地球绿地面积的21%被遮盖性森林所覆盖。这里所 Nowadays, there are more news media coverage on forestry than before. These reports mainly praise the performance of closing hillsides for afforestation, afforestation and returning farmland to forests and pastures. To cover this performance, it must involve a problem of forest coverage. Because the level of forest coverage is one of the main data reflecting the development of forestry. The concept of “forest coverage” is strictly scientifically defined. A report by the United Nations Environmental Protection Organization for the United Nations Conservation Forest reported that scientists found that 21% of the Earth’s green area is covered by shelter forests. Here