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森林覆盖面积,在总土地面积中所占的比例,称为“森林覆被率”。计算森林覆被率,国家有统一的技术标准,其公式:(有林地面积+灌木林地面积/总土地面积)×100这里的有林地和灌木林地有特定的含义。有林地包括天然林和人工林。天然林须是郁闭度在0.3以上的林子。人工林应是生长稳定(在北方地区一般阔叶树造林后3
The proportion of forest cover in the total land area, known as “forest cover rate.” Calculation of forest cover rate, the country has a unified technical standards, the formula: (with woodland area + shrub land area / total land area) × 100 There are woodland and shrubbery forest has a specific meaning. Forests include natural forests and plantations. Natural forest must be canopy density above 0.3 in the woods. Artificial forests should be stable (after hardwood afforestation in the north 3