吉林林业科技
吉林林業科技
길림임업과기
JILIN FORESTRY SCICNCE AND TECHNOLOGY
2014年
6期
20-22
,共3页
三岔子林业局%限额采伐%资源状况%龄组结构
三岔子林業跼%限額採伐%資源狀況%齡組結構
삼차자임업국%한액채벌%자원상황%령조결구
Sanchazi Forestry Bureau%Limitation cutting%Resource status%Age structure
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。
以吉林省三岔子林業跼的森林資源為調查對象，針對限額採伐後近13 a的資源數據和森林資源變化狀況進行分析，結果錶明：實施限額採伐後，年採伐量與實施天保工程初期相比較下降瞭38．32％；森林覆蓋率提高瞭2．04箇百分點。幼齡林麵積、蓄積比例分彆下降瞭9．3和2．5箇百分點；中齡林麵積、蓄積比例分彆增加瞭3．4和1．9箇百分點；近熟林麵積、蓄積比例分彆增加瞭2．9和0．3箇百分點；成熟林麵積比例增加瞭1．5箇百分點，蓄積比例下降瞭1．0箇百分點；過熟林麵積、蓄積比例分彆增加瞭1．8和1．3箇百分點。
이길림성삼차자임업국적삼림자원위조사대상，침대한액채벌후근13 a적자원수거화삼림자원변화상황진행분석，결과표명：실시한액채벌후，년채벌량여실시천보공정초기상비교하강료38．32％；삼림복개솔제고료2．04개백분점。유령림면적、축적비례분별하강료9．3화2．5개백분점；중령림면적、축적비례분별증가료3．4화1．9개백분점；근숙림면적、축적비례분별증가료2．9화0．3개백분점；성숙림면적비례증가료1．5개백분점，축적비례하강료1．0개백분점；과숙림면적、축적비례분별증가료1．8화1．3개백분점。
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 for-est 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.
