“无山不绿,有水皆清,四时花香,万壑鸟鸣,替河山装扮锦绣,把祖国绘成丹青”.这是50年代初梁希部长代表我国林业工作者发出的心声.由于种种历史上的原因,时至今日人们对林业发展前景忧心忡忡.尽管我国森林覆盖率由12%上升为12.98%.然而由于过量采伐和不合理消耗,用材林面积却减少了284.72公顷,其中成熟林和过成熟林面积减少 “No mountain is green, water is clear, four o’clock flowers, ten thousand birds and birds, beautifully decorated for the river, painted the motherland as Danqing.” This is the earliest speech made by Minister Liang Xi on behalf of our country’s forestry workers in the early 1950s. Due to historical reasons, people are still worried about the prospects of forestry development till now.Although the forest coverage in China increased from 12% to 12.98%, the area of ​​timber forest decreased by 284.72 hectares due to over-harvesting and unreasonable consumption, of which mature forest and Over mature forest area reduced