摘要
为云南松林业资源的管理保护和可持续发展供理论支撑,以云南省永仁县92块云南松天然林样地为研究对象,选用Shannon指数、Simpson指数和Pielou均匀度指数对云南松林分直径大小多样性进行量化,利用相关性和逐步回归分析环境因子对林分直径大小多样性的影响。结果表明:永仁县云南松的径阶级数比较丰富,径阶分布悬殊较大,林分水平结构复杂,云南松的林分直径大小多样性较为丰富;林分平均胸径、林分优势高、林分密度、海拔和坡向对多样性指数有显著影响;林分平均胸径、坡度、海拔和坡向与多样性指数密切相关,林分平均胸径是影响多样性指数的主要因子。
The stand diameter size of 92 Pinus yunnanensis natural forest sample plots was quantified by using Shannon index,Simpson index and Pielou index and the effect of environmental factors on the diversity of stand diameter size was studied by correlation and stepwise regression analysis to provide the theoretical support for management,protection and sustainable development of P.yunnanensis resources in Yunnan.Result:The diameter class number and distribution of P.yunnanensis are relatively abundant and wider respectively.The stand horizontal structure is complex relatively.The diversity of stand diameter size of P.yunnanensis is rich.The stand average breast diameter,stand dominant height,stand density,elevation and slope aspect all have the significant effect on diversity indexes.The stand average breast diameter,slope,elevation and slope aspect are related to diversity indexes closely.The stand average breast diameter is the main factor influencing diversity indexes.
作者
吴文君
黄明泉
施凯泽
张若
李晟
农明川
郑伟楠
蔡尤健
欧光龙
WU Wenjun;HUANG Mingquan;SHI Kaize;ZHANG Ruo;LI Sheng;NONG Mingchuan;ZHENG Weinan;CAI Youjian;OU Guanglong(Southwest Key Laboratory of Biodiversity Conservation,State Forestry Administration,Southwest Forestry University,Kunming,Yunnan 650224,China)
出处
《贵州农业科学》
CAS
2019年第1期158-161,165,共5页
Guizhou Agricultural Sciences
基金
国家自然科学基金项目"亚热带典型森林单木生物量空间效应变化比较分析"(31760206)
"考虑枯损的单木生物量分配与生长率的相对生长关系及相容性生长模型构建"(31560209)
"基于空间回归的森林生物量模型构建"(31660202)
关键词
林分直径
多样性
环境因子
相关性
逐步回归
云南松
stand diameter
diversity
environmental factor
correlation
stepwise regression
Pinus yunnanensis
