中文摘要：

以山西省中条山大河林场、太岳山绵山林场、兴唐寺林场和七里峪林场、五台山金岗库林场、恒山王庄堡林场的毛榛（Corylus mandshurica Maxim.）为研究对象,采用样方调查方法,系统研究了毛榛在不同生境中的构型和分形维数特征。结果显示,大河林场毛榛的总体分枝率和枝径比（RBD_（2：1）、RBD_（3：2））均大于其它地区,逐步分枝率（SBR_（1：2）、SBR_（2：3））与总体分枝率呈现出相反的趋势,五台山金岗库林场毛榛的逐步分枝率最大;山西省各研究地毛榛的分枝角度差异显著,北部地区从1级到3级有减小的趋势,金岗库林场的毛榛1级分枝角度最大;分枝长度也呈现出从1级到3级逐渐减小的趋势,其各级分枝长度排序为：金岗库林场〉王庄堡林场〉七里峪林场〉兴唐寺林场〉绵山林场〉大河林场;从分形维数来看,金岗库林场毛榛的树冠分维数和分枝分维数均为最大;各研究地毛榛的叶面积和地上生物量从北到南均表现为逐渐减小;金岗库林场毛榛叶面积的平均值、叶生物量和枝生物量均最大。研究结果表明6个研究区中金岗库林场的毛榛长势最好,该地的气候条件最适宜毛榛生长。

英文摘要：

Corylus mandshurica was selected for study in the Dahe forest area in the Zhongtiao mountains,Mianshan,Xingtangsi,and Qiliyu forest areas in the Taiyue mountains,Jingangku forest area in the Wutai mountains,and Wangzhuangbao forest area in Hengshan of the Shanxi Province.Using six quadrats,the configuration and fractal dimension characteristics of C.mandshurica in different habitats were studied.Results showed that the overall bifurcation ratio and the ratio of branch diameter（RBD_（2：1）,RBD_（3：2）） in the Dahe forest area were higher than those in other areas.The stepwise bifurcation ratio exhibited the opposite trend as the overall bifurcation ratio,and the stepwise bifurcation ratio of C.mandshurica in the Wutai mountains was the highest.However,the branch angle of C.mandshurica showed significant differences in each studied area.The branch angle gradually decreased from the first-class to the third-class in the northern territories.The first-class branch angle of C.mandshurica in the Jingangku forest area was the highest.The order of C.mandshurica branch length was Jingangku Wangzhuangbao Qiliyu Xingtangsi Mianshan Dahe,which exhibited a weakening trend from the first-class to the third-class.Fractal dimension was an important indicator,and clarified the complexity of plants.The greater the fractal dimension value,the stronger the plant occupied the space and the greater the potential use of space resources.The crown fractal dimension and bifurcation dimension of C.mandshurica were the highest in Jingangku.The crown structure was closely related to biomass.Leaf area,leaf biomass,and branch biomass from the side reflected the architectural characteristics of the plants.We analyzed the relationship among plant architecture,leaf area,and aboveground biomass.Leaf area and aboveground biomass of C.mandshurica gradually decreased from north to south of Shanxi Province.The average leaf area,leaf biomass,and branch biomass of C.mandshurica were the greatest in Jingangku.Results showed that the growth of