首页|苍山东坡云南松次生林林分结构特征

苍山东坡云南松次生林林分结构特征

扫码查看
为研究云南省大理市苍山东坡云南松人工次生林林分结构,测量和分析其物种组成、直径结构、树高分布、角尺度、大小比、混交度和密集度等指标.结果显示:(1)苍山东坡云南松次生林中物种多样性较丰富,各树种低度混交,伴生树种株数稀少.(2)不同径阶直径和不同树高距的树高均呈偏左分布,林分树高有向正态分布演替的趋势(呈现单峰曲线).(3)林分角尺度均值为0.480 4,整体呈随机分布,林木生长处于中庸状态((U)=0.503 9),各树种呈现极弱度混交状态((M)=0.140 7),林木稀疏((C)=0.023 6).(4)角尺度对大小比、混交度与密集度均有一定影响.因此建议在林中空旷地块补植乡土树种,改善林窗环境,提高光照利用率,促进向顶级植被演化进程.研究结果将为云南大理苍山东坡云南松次生林可持续经营提供参考.
Characteristics of Stand Structure of Pinus yunnanensis Secondary Forests on the East Slope of Cangshan Mountain
In order to explore the structural characteristics of planted Pinus yunnanensis secondary forests in the eastern slope of Cangshan Mountain,species composition,diameter structure,height distribution,angular scale,size ratio,mixing degree,and density were measured and analyzed.The results revealed that:(1)Rich species diversity with low-level intermixing among tree species but sparse counts of companion species within the Pinus yunnanensis artificial secondary forests.(2)Different diameter classes and height ranges exhibited a left-skewed distribution,in-dicating a tendency towards a normal distribution in tree height within the forest.(3)The mean angular scale of the forest was 0.480 4,indicating an overall random distribution of trees,with trees in a moderate state((U)=0.503 9),showing weak mixing among tree species((M)=0.140 7),and sparse tree density((C)=0.023 6).(4)Angular scale had a certain impact on size ratio,mixing degree,and density.We propose replanting indigenous tree species in open areas to enhance forest gaps,improve light utilization,and promote the evolution towards a climax vegetation phase.These findings provide valuable insights for sustainable management of Pinus yunnanensis artificial secondary forests in the eastern slope of Cangshan Mountain.

Pinus yunnanensissecondary forestsstand structuresustainable managementCangshan Mountain

宣帅、王建明、尹继庭、管亚东

展开 >

大理大学数学与计算机学院,云南 大理 671003

大理州林业和草原科学研究所,云南 大理 671000

云南省林业调查规划院大理分院,云南 大理 671000

云南松 次生林 林分结构 可持续经营 苍山

国家自然科学基金云南省基础研究专项面上项目云南省博士后科研基金云南省地方本科高等学校基础研究联合专项青年项目

32001313202201AT070006ynbh200572018FH001-106

2024

西部林业科学
云南省林业科学院 云南省林学会

西部林业科学

CSTPCD北大核心
影响因子:0.807
ISSN:1672-8246
年,卷(期):2024.53(1)
  • 40