森林工程2017，Vol.33Issue(2)：11-16,21,7.
大兴安岭盘古林场2种优势树种空间分布格局研究
Study on Spatial Pattern of Two Dominant Species ForestTypes in the Great Hingan Pangu Forest Stand
摘要
Abstract
Base on the data set of 10 sample fields investigation of the Great Hingan in 2011,spatial distribution pattern of 2 dominant species of larch and birch in Pan'gu forest stand was studied using four methods.The results showed that larch significantly aggregated distribution in the half-mature larch forest.As the forest stand developed to near mature forest and mature forest stage,the degree of aggregation decreased due to intense intraspecific and interspecific competition.Larch forest spatial structure among the age groups presented middle-aged forest> mature forest> nearly mature forest.Significant linear correlation was found between FSSI and FSSD vwith the linear regression model:FSSD=-1.201 3FSSI+144.03,R2=0.984 2(P<0.01).This indicated that both have a strong consistency in describing aspects of forest stand spatial structure.The distribution of spatial structure began to convert to uniform distribution from aggregating status in the process of the birch growing to over mature forest from the young forest.Middle-age forest had the highest aggregation degree.The distribution began to appear a tendency of converting from aggregating distribution to the uniform distribution in the nearly mature forest and it will completely convert into c the uniform distribution when the forest developed into the mature forest.The merits of the forest spatial structure of birch among the age group presented middle-aged forest > mature forest> nearly mature forest> young forest.Highly significant linear relationship was found between FSSI and FSSD also.The linear regression model was FSSD=-0.703 8FSSI+113.19,R2=0.998 5(P<0.01).This study provides a strong basis for determining rational and health forest management measures in future by studying natural larch and birch forest stands and their spatial distribution patterns of dominant species.关键词
天然落叶松林/白桦林/林分空间结构指数/林分空间结构距离/混交度/林木点格局Key words
natural larch forest/birch/FSSI/FSSD/spatial distribution pattern/stand mingling degree/tree point pattern分类
农业科技引用本文复制引用
张凌宇,刘兆刚..大兴安岭盘古林场2种优势树种空间分布格局研究[J].森林工程,2017,33(2):11-16,21,7.基金项目
"十二五"国家科技支撑计划项目(2012BAD22B0202) （2012BAD22B0202）
