抚育对黑河地区典型天然次生林群落结构的影响  

Effect of Thinning on Community Structure of Typical Natural Secondary Forest in Heihe Region

作　　者：梁立东 李明文 Liang Lidong;Li Mingwen(Heihe Academy of Forestry Sciences,Heihe 164300,China)

机构地区：[1]黑河市林业科学院,黑龙江黑河164300

出　　处：《防护林科技》2020年第7期1-3,33,共4页Protection Forest Science and Technology

摘　　要：以黑河地区典型天然次生林(针阔混交林、白桦林、蒙古栎林和杂木林)为研究对象,采用常规抚育经营方式,研究了抚育对黑河地区典型天然次生林群落的树种组成、径级和树高级结构的影响。结果表明:抚育经营能够提高兴安落叶松等主要树种的地位(重要值提高28.26%~120.00%),提高天然次生林经营价值;抚育经营能够显著提高大中径级林木所占比例(2.21%~22.68%),降低小径级林木所占比例(2.21%~26.36%),充分发挥天然次生林的生产潜力;抚育经营能够显著提高演替层林木所占比例(2.27%~100.00%),降低主林层林木所占比例(0.00%~2.27%),加速天然次生林向地带性顶级群落恢复进程。The effects of thinning on the species composition,diameter class&tree height class structure of typical natural secondary forest communities in Heihe region were studied by using conventional thinning management&taking the typical natural secondary forest as the research object.The structure shows that the thinning can improve the status of Larix gmelinii&other major tree species(the important value increase by 28.26%-120.00%),increasing the management value of natural forest secondary forest;thinning can significantly increase the proportion of large&medium diameter wood(2.21%-22.68%)&reduce the proportion of small diameter wood(2.21%-26.36%),giving full play to the production potential of natural forest secondary forest;thinning can significantly increase the proportion of trees in succession layer(2.27%-100.00%)&reduce the proportion of forest in the main forest layer(0.00%-2.27%),accelerate the recovery process from secondary forest to top zonal community.

关 键 词：黑河地区 天然次生林 群落结构 抚育经营 

分 类 号：S718.54[农业科学—林学]