金沟岭林场过伐林更新幼苗空间结构分析  

Spatial Structure Pattern of Regeneration Seedlings From Over-logged Forest in Jingouling Forest Farm

作　　者：乌吉斯古楞[1] 王俊峰[2] 郑小贤[1] 王艳洁[1] 刘小丽[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083 [2]西南林学院,云南昆明650224

出　　处：《中南林业科技大学学报》2009年第4期21-25,共5页Journal of Central South University of Forestry & Technology

基　　金：国家"十一五"科技支撑计划专题"长白山天然林生态采伐和次生林结构调整及多目标经营技术"(2006BAD03A0804)

摘　　要：对吉林省汪清县金沟岭林场过伐林的更新幼苗株数及其分布格局进行了研究.结果表明:研究林分更新幼苗株数分布呈倒"J"型,主要树种更新幼苗株数由多到少依次为色木、冷杉、云杉和椴树,其它树种更新幼苗株数均较少;色木、冷杉和云杉的更新幼苗株数均随幼苗等级的增大而减少,椴树的更新幼苗株数随幼苗等级的增大而增多,红松、榆树和水曲柳株数变化没有规律;逆函数、三次函数、二次函数、复合函数、幂函数、生长函数、指数函数和逻辑函数均符合林分株数分布规律;分布格局采用方差均值比率法和4种聚集度指标法共同检验,结果表明林分及其主要树种更新幼苗的分布格局均为聚集分布,云杉和冷杉聚集强度居前两位.Regeneration species and seedlings from over-logged forests in Jingouling Forest Farm were investigated for their spatial structure. Results show that their spatial structure pattern is like an upside-down J; that the number of regenerated strains goes from big to small in the following order： Acer mono 〉 Abies fabric 〉 Spruce 〉 Tilia, with little regeneration of other species; that the seedlings of Acer mono, Spruce and Abies fabric are decreased with the increase of seedling scales but those of Tilia are increased; that the variation of the strain number of Pinus koraiensis, Ulmus purntila and Fraxinus mandshurica does not follow a regulation; that their inverse function, cubic function, quadratic function, compound function, power function, growth function, exponential function and logic function all fit into the distribution regularity of the stand strains; and that tests by a combined method of variance meanvalue ratio and 4-congregation index prove that the distribution pattern of the stands and main regenerated seedlings is aggregated and the aggregated intensity of Spruce and Abies fabric ranks first and second.

关 键 词：森林经理 过伐林 更新幼苗 空间结构 金沟岭 

分 类 号：S754.1[农业科学—森林经理学]