CAJ | 학술논문

通过对贵州5个项目县8个森林经营单位内近自然经营间伐前后林木胸高断面积、树高、蓄积、株间距、空间配置面积等林分因子进行对比分析，揭示近自然间伐后对林分结构的影响趋势。结果表明：对林分实施近自然间伐后，林木胸高断面均值、树高均值、蓄积量值均有一定程度增加，通过近自然间伐可使林分较间伐前更加健壮，林分机械稳定性有一定程度的提高；通过近自然间伐虽在总体上有利于促进林木优势分化，但不能通过一次近自然间伐活动在短期内得以实现；通过近自然间伐可使林木最小株间距和空间配置面积均值增加，林木生长空间得到有效扩展，林木间竞争得到有效缓和，并使林木空间分布更趋均匀，从而促使林分整体快速生长。
통과대귀주5개항목현8개삼림경영단위내근자연경영간벌전후림목흉고단면적、수고、축적、주간거、공간배치면적등림분인자진행대비분석，게시근자연간벌후대림분결구적영향추세。결과표명：대림분실시근자연간벌후，림목흉고단면균치、수고균치、축적량치균유일정정도증가，통과근자연간벌가사림분교간벌전경가건장，림분궤계은정성유일정정도적제고；통과근자연간벌수재총체상유리우촉진림목우세분화，단불능통과일차근자연간벌활동재단기내득이실현；통과근자연간벌가사림목최소주간거화공간배치면적균치증가，림목생장공간득도유효확전，림목간경쟁득도유효완화，병사림목공간분포경추균균，종이촉사림분정체쾌속생장。
In the paper,some influence factors,such as forest stand structure,basal area at breast height,tree height,volume,space configuration,plant spacing area,etc.were analyzed before and after thinning in the close-to-nature management forest,and then revealed the impact trend of close-to-natural thinning on stand structure. Results showed that after the close to nature thining,the average of basal area at breast height,tree height,volume increased,the stand became more robust,and the mechanical stability of stand was improved.Although close to nature thinning was advantageous to the trees′optimizing development,advantages could not be realized in a short time.Close-to-nature thining made the minimum spacing and space configuration area increased,the grow space of trees expanded,the competition between trees eased,and the forest spatial distribution uniformed,and then improved the rapid growth potential of the whole forest.