摘要
在样地调查的基础上,运用大小比数、混交度、角尺度、密集度等参数分析黄枝润楠天然林分空间结构.结果表明:各树种的平均大小比数在0~1各水平上均有分布,林分平均混交度为0.799,平均角尺度为0.464,平均密集度为0.793.林分空间结构比较合理,处于相对稳定发展的状态,群落位于较高级的演替阶段.
Based on the sample survey data,the spatial structure of natural Machilus versicolora stand was analyzed by neighborhood comparison,mingling degree,uniform angle index and crowding.The results showed that:the average neighborhood comparison of different tree species distributed over all level of 0~1,and the mingling degree of stand is 0.799,the uniform angle index is 0.464,the average crowding is 0.793.The spatial structure of stand is relatively reasonable,and the community is in the relatively high stage of succession,and the stand is in the condition of relatively stable development.
出处
《北华大学学报(自然科学版)》
CAS
2017年第4期515-520,共6页
Journal of Beihua University(Natural Science)
基金
福建省林业科学研究项目(KLb15H01A)
福建农林大学林业经济管理博士后基金(132300064)
福建农林大学科技创新专项基金项目(CXZX2016063)
关键词
黄枝润楠
空间结构
大小比数
混交度
角尺度
密集度
Machilus versicolora
spatial structure
neighborhood comparison
mingling degree
uniform angle index
crowding