东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2014年
10期
1-6
,共6页
采伐强度%小兴安岭%低质林%生物多样性
採伐彊度%小興安嶺%低質林%生物多樣性
채벌강도%소흥안령%저질림%생물다양성
s Cutting intensity%Xiaoxing’ an Mountains%Low-quality forest stands%Biodiversity
以小兴安岭带岭林业局林区的低质林为研究对象，选取3块样地进行不同强度采伐后，分别进行天然更新、人工促进更新、人工补植更新，应用主成分分析方法，研究了不同采伐强度对低质林群落物种多样性的影响效果。结果表明：无论是在天然更新、人工促进更新，还是在人工补植更新试验样地上，在采伐强度20％～80％内，乔木层的生物多样性高于对照林分，尤其是选用40％～60％的采伐强度进行抚育采伐，乔木层的生物多样性相对较高，而在各试验样地上，高采伐强度有利于灌木层生物多样性的维持，在人工促进更新样地上，草本层生物多样性低于对照林分，采伐强度80％时，在各试验样地草本层生物多样性较高。所以采用中等采伐强度（40％～60％）进行低质林抚育改造，有利于群落生物多样性的提高。
以小興安嶺帶嶺林業跼林區的低質林為研究對象，選取3塊樣地進行不同彊度採伐後，分彆進行天然更新、人工促進更新、人工補植更新，應用主成分分析方法，研究瞭不同採伐彊度對低質林群落物種多樣性的影響效果。結果錶明：無論是在天然更新、人工促進更新，還是在人工補植更新試驗樣地上，在採伐彊度20％～80％內，喬木層的生物多樣性高于對照林分，尤其是選用40％～60％的採伐彊度進行撫育採伐，喬木層的生物多樣性相對較高，而在各試驗樣地上，高採伐彊度有利于灌木層生物多樣性的維持，在人工促進更新樣地上，草本層生物多樣性低于對照林分，採伐彊度80％時，在各試驗樣地草本層生物多樣性較高。所以採用中等採伐彊度（40％～60％）進行低質林撫育改造，有利于群落生物多樣性的提高。
이소흥안령대령임업국림구적저질림위연구대상，선취3괴양지진행불동강도채벌후，분별진행천연경신、인공촉진경신、인공보식경신，응용주성분분석방법，연구료불동채벌강도대저질림군락물충다양성적영향효과。결과표명：무론시재천연경신、인공촉진경신，환시재인공보식경신시험양지상，재채벌강도20％～80％내，교목층적생물다양성고우대조림분，우기시선용40％～60％적채벌강도진행무육채벌，교목층적생물다양성상대교고，이재각시험양지상，고채벌강도유리우관목층생물다양성적유지，재인공촉진경신양지상，초본층생물다양성저우대조림분，채벌강도80％시，재각시험양지초본층생물다양성교고。소이채용중등채벌강도（40％～60％）진행저질림무육개조，유리우군락생물다양성적제고。
In low-quality forest stands of Xiaoxing ’ an Mountain forest areas in Forestry Bureau of Dailing City , we selected three plots to proceed natural regeneration , artificial promoting regeneration , and artificial replanting regeneration after cutting with different cutting intensities , and studied the effects of the biodiversity of plant communities with different cutting inten -sities cut by principal component analysis .The biodiversity of arbor layers in whether natural regeneration , artificial promo-ting regeneration and artificial replanting regeneration plots was higher than that in the check plots with the cutting intensity of 20%-80%, relatively higher with cutting intensity of 40%-60%to cut especially , while it was available to maintain the biodiversity of shrub layers with high cutting intensity in the plots .The biodiversity of herb layers of artificial promoting re-generation plots was lower than that of check plots , and the biodiversity of herb layers of all the plots were relatively higher with 80%of cutting intensity .Therefore, it’ s available to increase the biodiversity of plant communities with medium cut-ting intensity of 40%-60%in the low-quality forest stands ’tending transformation .
