三峡库区3种典型森林主要组成树种的种群结构及更新

doi:10.11707/j.1001-7488.20090702

林业科学 ›› 2009, Vol. 12 ›› Issue (7): 7-15.doi: 10.11707/j.1001-7488.20090702

三峡库区3种典型森林主要组成树种的种群结构及更新

王鹏程^1,2肖文发²姚婧¹张守攻²黄志霖²曾立雄²潘磊^2,3

1.华中农业大学园艺林学学院武汉430070； 2.中国林业科学研究院森林生态环境与保护研究所北京100091；3. 湖北省林业科学研究院武汉430079

收稿日期:2007-12-24 修回日期:1900-01-01 出版日期:2009-07-25 发布日期:2009-07-25
基金资助:

Population Structure and Regeneration of the Main Tree Species in Three Typical Forests in the Three Gorges Reservoir Area

Wang Pengcheng^1,2,Xiao Wenfa²,Yao Jing¹,Zhang Shougong²,Huang Zhilin²,Zeng Lixiong²,Pan Lei^2,3

1. College of Horticulture and Forestry,Huazhong Agricultural UniversityWuhan 430070；2. Institute of Forest Ecology,Environment and Protection,CAFBeijing 100091；3.Forestry Science Institute of Hubei ProvinceWuhan 430079

Received:2007-12-24 Revised:1900-01-01 Online:2009-07-25 Published:2009-07-25
Supported by:

摘要/Abstract

摘要：

在调查群落种类组成的基础上，对三峡库区3种典型森林主要组成树种的种群结构进行分析，并推断群落的演替趋势。结果表明：1）三峡库区森林群落乔木层优势种主要为马尾松、柏木等针叶树种，短柄栎、栓皮栎等落叶阔叶树种及多脉青冈、石栎等常绿阔叶树种； 2）针叶群落中乔木层个体高度级频度顶点位于10～15 m，针阔混交群落与阔叶群落为5～10 m； 3）阔叶群落中短柄栎和栓皮栎等优势种的胸径频率为逆J字型，伴生树种主要为L型或逆J字型，主要组成树种的种群结构表明优势种种群处于稳定状态； 4）针阔混交群落针叶优势种的种群属于单峰型和逆J字型的衰退类型，阔叶树种多为逐渐增长的L型或间歇性发展的多峰型； 5）针叶群落优势树种胸径频率属于典型的单峰型，伴生树种为单柱型或L型； 6）由主要组成树种的种群结构推断三峡库区森林群落演替过程为针叶林群落→针阔混交林群落→常绿阔叶林群落。研究结果为三峡库区生态建设和森林资源管理提供科学依据。

关键词: 优势树种, 胸径级频率, 更新类型, 演替, 三峡库区

Abstract:

Based on a survey of the population composition of plant communities, the main tree species population structure of three typical forests was analyzed and the succession trends of communities were deduced in the Three Gorges Reservoir Area. The results showed that: 1) The dominant species in the arbor layer included coniferous trees (Pinus massoniana, Cupressus funebris etc.), deciduous broad-leaved trees (Quercus glanduifera, Quercus variabilis etc.), and evergreen broad-leaved trees Cyclobalanopsis multineryius, Lithocarpus glaber etc.). 2) The height class frequency peak in coniferous forest arbor layer was 10～15 m, while that in coniferous-broadleaved and broadleaved forest was 5～10 m. 3) The DBH class frequency distributions of dominated species in broadleaved forest displayed an inverse-J pattern, while that of companion species was L or inverse-J pattern. The population size structure of main tree species indicated the community appeared stable. 4) The population of dominant coniferous species in coniferous-broadleaved forest community was declining, presenting unimodal, inverse-J shape, while those of broadleaved dominated species were gradually increasing, with L type or intermittent increasing multimodal type. 5) The DBH class frequency distribution of dominant species in coniferous forest was typical unimodal, while those of the companion species were unibar type or L type. 6) The forest succession procedure in the Three Gorges Reservoir Area was deduced with the population size structure of main tree species, such as the coniferous forest community →the broadleaf and conifer mixed forest community → the evergreen broad-leaved forest community. The results provided scientific basis for eco-construction and forest resources management in Three Gorges Reservoir Area.

Key words: dominant species, DBH class frequency, regeneration type, succession, Three Gorges Reservoir Area

中图分类号:

王鹏程;肖文发姚婧张守攻黄志霖曾立雄潘磊;. 三峡库区3种典型森林主要组成树种的种群结构及更新[J]. 林业科学, 2009, 12(7): 7-15.

Wang Pengcheng;Xiao Wenfa;Yao Jing;Zhang Shougong;Huang Zhilin;Zeng Lixiong;Pan Lei;. Population Structure and Regeneration of the Main Tree Species in Three Typical Forests in the Three Gorges Reservoir Area[J]. Scientia Silvae Sinicae, 2009, 12(7): 7-15.

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三峡库区3种典型森林主要组成树种的种群结构及更新

Population Structure and Regeneration of the Main Tree Species in Three Typical Forests in the Three Gorges Reservoir Area

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