更新采伐对华北落叶松人工林空间格局的影响  

Influence of regeneration cutting on spatial pattern of Larix principis-rupprechtii plantation

作　　者：原民龙 陈金龙[2] 崔丽红[2] 姜韬[1] 黄选瑞[2] 

机构地区：[1]河北省木兰围场国有林场管理局,河北围场068450 [2]河北农业大学林学院,河北保定071000

出　　处：《河北林果研究》2012年第3期255-259,共5页Hebei Journal of Forestry and Orchard Research

基　　金：国家公益专项(20100400205)资助

摘　　要：种群空间分布格局是种群个体在水平空间的分布方式,对林分空间格局的研究和分析可以为林业生产提供宝贵资料和实践指导,同时科学地制定抚育经营措施是提高森林质量的关键环节。本试验研究了更新采伐对华北落叶松人工林种群空间分布格局的影响。结果表明,华北落叶松种群的格局强度随研究尺度的不同而不同。通过更新采伐使得原先呈聚集分布的种群空间格局变为随机分布或者使得其聚集强度明显降低。因此在华北落叶松种群生长的整个过程中应定期进行更新采伐,伐除林分中生长落后的林木和有害木,降低林分密度,改善林分结构,保证林分朝着健康稳定的方向发展,实现林分的可持续经营。Spatial distribution pattern of population is a horizontal distribution mode of individuals of population.The study and analyses of the spatial pattern of stand can provide precious materials and practical guidance for forestry production,and in the meanwhile scientific establishment of tending management measurements is a key link to improving forest quality.This paper studies the influence of the regeneration cutting on the spatial distribution pattern of Larix principis-rupprechtii plantation.The results show that the spatial pattern intensity of Larix principis-rupprechtii varies with the studying scale.Through regeneration cutting,the original aggregated distribution pattern is changed into a random distribution,with the aggregation intensity reduced significantly.Therefore,regular regeneration cutting should be taken during the whole growth process of Larix principis-rupprechtii population,and these trees growing slow and doing harm to others are supposed to be cut thus to reduce the density of stand,improve the stand structure,ensure the more healthy and stable development of the stand,and realize the sustainable management of forest management.

关 键 词：更新采伐 华北落叶松种群 空间格局 尺度 

分 类 号：S754[农业科学—森林经理学]