通榆县杨树人工林地表枯落物载量调查与分析  

The earth surface litter capacity investigation and analysis of Populus artificial forest in Tongyu county

作　　者：赵永重 周勇[2] 刘娜 王永明 史立峰 章林[2] 

机构地区：[1]通榆县公路管理段,吉林白城137200 [2]吉林省林业科学研究院,吉林长春130033 [3]长春市林业科学研究院,吉林长春130117 [4]通榆县林业局,吉林白城137200

出　　处：《吉林林业科技》2017年第6期28-30,41,共4页Journal of Jilin Forestry Science and Technology

基　　金：吉林省林业厅林业科技项目(2012-001)

摘　　要：以通榆县营造杨树人工林为对象,对不同龄组林地地表枯落物类型与载量进行调查与分析,结果表明:在4种枯落物中,枯落叶片风干含水率平均值最低,为9.68%;1 h时滞枯枝最高,为15.16%。全县杨树人工林地表枯落物总量587 202.7 t,幼龄林总质量最高,为226 527.5 t,占38.6%;中龄林总质量73 209.9 t,占12.5%;近熟林总质量最低,为19 018.6 t,占3.2%;成熟林总质量156 711.0 t,占26.7%;过熟林总质量量111 735.7 t,占19.0%。从枯落物总质量看,秋季防火重点为幼龄林、成熟林和过熟林。The earth surface litter categaries and capacity of different age group forest were investigated and analyzed by taking the constructing Populus artificial forest as object. The result showed that fallen leaves air seasoning moisture content average value was lowest 9. 68 % among 4 litters. The litter of 1 h time-lag was highest 15. 16 %. The whole Populus artificial forest earth surface litter mass in county was 587 202. 7 t. The total mass of young growth was highest 226 527. 5 t which occupied 38. 6 %. The total mass of immature forest was 73 209. 9 t which occupied 12. 5 %. The total mass of near-mature forest was lowest 19 018. 6 t which occupied 3. 2 %. The total mass of mature forest was 156 711. 0 t which occupied 26. 7 %. The total mass of overmature forest was 111 735. 7 t which occupied 19. 0 %. The key fire-prevention were young growth,immature forest and overmature forest from the perspective of total mass of litter.

关 键 词：通榆县 杨树人工林 地表枯落物 载量 风干含水量 

分 类 号：S726[农业科学—林木遗传育种]