摘要
以吉林省三岔子林业局的森林资源为调查对象,针对限额采伐后近13 a的资源数据和森林资源变化状况进行分析,结果表明:实施限额采伐后,年采伐量与实施天保工程初期相比较下降了38.32%;森林覆盖率提高了2.04个百分点。幼龄林面积、蓄积比例分别下降了9.3和2.5个百分点;中龄林面积、蓄积比例分别增加了3.4和1.9个百分点;近熟林面积、蓄积比例分别增加了2.9和0.3个百分点;成熟林面积比例增加了1.5个百分点,蓄积比例下降了1.0个百分点;过熟林面积、蓄积比例分别增加了1.8和1.3个百分点。
The forest resource of Sanchazi Forestry Bureau of Jilin Province was chosen as research object .Approximately 13 year resource datum and forest resource change after forest limitation cutting was analyzed .The result showed that annual forest felling volume decreased by 38.32%compared with the initial stage of natural forest protection program and the forest coverage rate increased by 2.04 percentage point after carrying the forest limitation cutting .The area and accumulation ratio of young growth decreased 9.3 and 2.5 percentage point, respectively.In addition, the area and accumulation ratio of im-mature timber increased 3.4 and 1.9 percentage point, respectively.The area and accumulation ratio of near -mature forest increased 2.9 and 0.3 percentage point, respectively.The area of mature forest increased 1.5 percentage point while the accumulation ratio of mature forest decreased 1.0 percentage point .The area and accumulation ratio of overmature forest increased 1.8 and 1.3 percentage point, respectively.
出处
《吉林林业科技》
2014年第6期20-22,共3页
Journal of Jilin Forestry Science and Technology
关键词
三岔子林业局
限额采伐
资源状况
龄组结构
Sanchazi Forestry Bureau
Limitation cutting
Resource status
Age structure
作者简介
刘本军（1980-），女，吉林白山人，工程师，主要从事森林资源管理工作．
