宝华山紫楠风景林林分空间结构分析  

Spatial Structure of Scenic Forest of Phoebe sheareri in Baohuashan, Jiangsu Province

作　　者：邓送求[1] 闫家锋[1] 关庆伟[1] 

机构地区：[1]南京林业大学,南京210037

出　　处：《东北林业大学学报》2010年第4期29-32,共4页Journal of Northeast Forestry University

基　　金：国家"十一五"科技支撑计划项目(2006BAD03A0602);国家林业局"948"项目(2006-4-27)

摘　　要：应用传统林分结构因子配合混交度、角尺度、大小比数和开敞度4个林分空间结构参数,分析了宝华山紫楠风景林的空间结构特征。结果表明:紫楠风景林物种丰富度较高,乔木层共有15个树种,径级结构分布连续,群落垂直结构特征明显,可分为3个林层;林分平均混交度为0.483,处于中度混交状态;林分平均角尺度为0.485,属于随机分布;林分平均大小比数为0.478,有接近40%的林木处于优势状态;林分平均开敞度为0.305,林木生长空间基本充足。紫楠种群优势度明显,群落暂时处于相对稳定状态。A survey was conducted to study the spatial structure of scenic forest of Phoebe sheareri in Baohuashan, Jiangsu Province by traditional stand structure indexes, including mingling degree, uniform angle index, neighborhood comparison, and opening degree. Results show that the species diversity of P. sheareri community is rich. There are 15 tree species in arbor layer, the diameter class structure of P. sheareri community is continuous, and the vertical structure of the stand is distinct and could be classified into three layers. The four indexes of the P. sheareri stand were obtained as average mingling degree 0.483, uniform angle index 0.485, neighborhood comparison 0.478, and average opening degree 0.305. Judged from the four indexes, the trees in the stand with a moderate mingling degree are randomly distributed, and nearly 40 percent of the trees are dominant. The growth space around each tree in the stand is adequate. The predominance of P. sheareri population is obvious, and the community is in a relatively stable state.

关 键 词：宝华山 风景林 紫楠 林分空间结构 

分 类 号：S718.542[农业科学—林学]