北华大学学报(自然科学版)
北華大學學報(自然科學版)
북화대학학보(자연과학판)
JOURNAL OF BEIHUA UNIVERSITY(NATURAL SCIENCE)
2015年
1期
91-95
,共5页
曹丽娟%夏富才%李良%孙越%赵海明%王会春%于洪波%李小光%薛庆勇
曹麗娟%夏富纔%李良%孫越%趙海明%王會春%于洪波%李小光%薛慶勇
조려연%하부재%리량%손월%조해명%왕회춘%우홍파%리소광%설경용
次生针阔混交林%张广才岭%空间结构%混交度%大小比数%角尺度
次生針闊混交林%張廣纔嶺%空間結構%混交度%大小比數%角呎度
차생침활혼교림%장엄재령%공간결구%혼교도%대소비수%각척도
secondary coniferous broad-leaved forest%Zhangguangcai Mountain%spatial structure%mingling%neighborhood comparison%neighborhood pattern
确定林分空间结构是次生林保护和可持续经营的前提.次生针阔混交林是张广才岭最主要的林分类型,运用大小比数、角尺度、混交度3个空间结构参数研究张广才岭次生针阔混交林永久样地的空间结构.结果表明:样地大小比数为0.497,平均角尺度为0.538,平均混交度为0.630;针阔混交林林木相邻个体在垂直方向上分化不明显,存在激烈竞争的中层;林木配置处于中度到强度混交水平之间,林分总体上属于聚集分布格局;次生针阔混交林的空间结构特征已接近当地原始阔叶红松林水平.
確定林分空間結構是次生林保護和可持續經營的前提.次生針闊混交林是張廣纔嶺最主要的林分類型,運用大小比數、角呎度、混交度3箇空間結構參數研究張廣纔嶺次生針闊混交林永久樣地的空間結構.結果錶明:樣地大小比數為0.497,平均角呎度為0.538,平均混交度為0.630;針闊混交林林木相鄰箇體在垂直方嚮上分化不明顯,存在激烈競爭的中層;林木配置處于中度到彊度混交水平之間,林分總體上屬于聚集分佈格跼;次生針闊混交林的空間結構特徵已接近噹地原始闊葉紅鬆林水平.
학정림분공간결구시차생림보호화가지속경영적전제.차생침활혼교림시장엄재령최주요적림분류형,운용대소비수、각척도、혼교도3개공간결구삼수연구장엄재령차생침활혼교림영구양지적공간결구.결과표명:양지대소비수위0.497,평균각척도위0.538,평균혼교도위0.630;침활혼교림림목상린개체재수직방향상분화불명현,존재격렬경쟁적중층;림목배치처우중도도강도혼교수평지간,림분총체상속우취집분포격국;차생침활혼교림적공간결구특정이접근당지원시활협홍송림수평.
Spatial structure of stand is prerequisite for forest conservation and sustainable management. Secondary coniferous broad-leaved forest is the most important forest type in Zhangguangcai Mountain. Its stand spatial structure was studied by means of three structural diversity indicators:mingling, neighborhood comparison and neighborhood pattern. The mean neighborhood pattern, neighborhood comparison and mingling of this plot are 0. 538,0. 497 and 0. 630 respectively. The results indicate that the forest is between moderate mingling level and intensive mingling level horizontally, tree species differentiation is not apparent vertically, and the forest is aggregated. These characteristics of spatial structure suggest that secondary coniferous broad-leaved forest is approaching to virgin broad-leaved korean pine forest in Zhangguangcai Mountain.