我省现有天然次生林3,700万亩。占全省森林总面积的72％,是我省森林资源的重要组成部分。这些森林成林历史短,人为活动频繁,使得林相残破,林龄相差悬殊,林木粗细不等,高矮不齐,树种杂乱,稀密不均,很难经营。因此,要坚持保留优良林木,砍去劣质林木的原则,做到五砍五留。 There are 37,000,000 mu of natural secondary forests in our province. Accounting for 72% of the total forest area in the province, is an important part of our province’s forest resources. These forests have a short history of forest growth and frequent human activities, resulting in the breakdown of forest types and the long differences in age. Trees are uneven in height, uneven in height, disorderly in tree species, uneven in density and difficult to operate. Therefore, we must uphold the principle of preserving excellent trees and cutting down inferior trees so that we can make five cuts and five stays.