滇中磨盘山华山松次生林空间结构特征  

Spatial Structure of Pinus armandii Secondary Forest in Mopan Mountain of Central Yunnan Area

作　　者：刘欣艺 王克勤[1,2] 段旭 朱梦雪[1] 赵洋毅 LIU Xin-yi;WANG Ke-qin;DUAN Xu;ZHU Meng-xue;ZHAO Yang-yi(College of Ecology and Environment,Southwest Forestry University,Kunming Yunnan 650224,P.R.China;National Forestry Observation and Research Station of Yuxi Forest Ecosystem,National Forestry and Prairie Bureau,Kunming Yunnan 650224,P.R.China)

机构地区：[1]西南林业大学生态与环境学院,云南昆明650224 [2]国家林业和草原局云南玉溪森林生态系统国家定位观测研究站,云南昆明650224

出　　处：《西部林业科学》2021年第1期153-160,167,共9页Journal of West China Forestry Science

基　　金：云南省重点研发计划项目(2018BB018);云南省万人计划青年拔尖人才专项项目(YNWR-QNBJ-2019-215,YNWR-QNBJ-2019-226);国家自然科学基金项目(31860235)。

摘　　要：以滇中地区磨盘山华山松次生林为研究对象,在3种林龄(15、30、40 a)华山松林分中分别设置1 hm 2的样地,利用混交度、角尺度和大小比数等空间结构参数研究其林分结构特征,并对林分胸径曲线进行拟合。结果表明:不同林龄华山松次生林的径级分布特征不同,其中15 a华山松林为“单峰型”的径级分布,而30、40 a华山松林乔木层则呈“双峰型”径级分布;采用常见指数对胸径分布进行拟合,其结果具有显著相关性;华山松次生林空间结构参数一元、二元分布在一定程度上能刻画出森林演替过程,结构参数二元分布能够指示群落演替的过程。研究结果有助于提高本区域华山松空间结构使用效率,维持森林的健康、稳定,持续发挥森林的各项功能和效益。With Pinus armandii forest in Mopan Mountain in central Yunnan as the research object,three types of forest age(15a,30a and 40a)were set samples with 1hm 2 respectively,and the structural characteristics of forest stand were studied by using the spatial structure parameters such as mingling,uniform angle index and dominance,the DBH curve was fitted.The results showed that the diameter classes distribution of P.armandii secondary forest of different stand ages presented different characteristics,among which the diameter distribution of the 15-year-old P.armandii forest was“single-peak type”,while the diameter distribution of the 30-year-old P.armandii forest and the 40-year-old P.armandii forest layer was“double-peak type”.The common indices were used to fit the DBH distribution,and the fitting results showed significant correlation.The unitary structural parameters and binary structural parameters of P.armandii plantation can describe the succession of forests.The binary structural parameters can indicate the process of community succession.

关 键 词：华山松 空间结构参数 二元分布 磨盘山 

分 类 号：S791.241[农业科学—林木遗传育种] S718.54[农业科学—林学]