在溫帶老齡林中植物群落的可持續(xù)性激發(fā)了許多生態(tài)學(xué)家在局域尺度的生境中探索物種共存的維持機(jī)制。環(huán)境異質(zhì)性是控制群落結(jié)構(gòu)和驅(qū)動生態(tài)過程的最基本因素之一,同時影響種群動態(tài)�；谏鷳B(tài)位分化的概念,更多樣化的環(huán)境可以通過劃分的生態(tài)位空間支持更多物種,這意味著正的異質(zhì)性-多樣性關(guān)系。另外,環(huán)境異質(zhì)性的作用被用于評估群落內(nèi)植物性狀對環(huán)境的響應(yīng)。本研究依托于小興安嶺涼水典型闊葉紅松（Pinus koraiensis）林的9 hm2森林動態(tài)監(jiān)測樣地進(jìn)行。根據(jù)十個土壤變量、四個地形變量、葉面積指數(shù)（LAI）和物種豐富度對研究樣地的生境進(jìn)行分類,發(fā)現(xiàn)土壤有機(jī)碳和坡度是影響物種分布的重要因素,并將研究區(qū)劃分為三種生境類型。三種生境類型分別為HabⅠ（中坡度、高土壤有機(jī)碳）,HabⅡ（中坡度、低土壤有機(jī)碳）和Hab Ⅲ（低坡度、低土壤有機(jī)碳）。為了通過生境過濾方法理解群落構(gòu)建過程的機(jī)制,本文檢驗(yàn)了喬木和灌木物種的物種-生境關(guān)聯(lián)。結(jié)果表明,只有紅松與Hab Ⅰ呈正相關(guān)。在不同生活史中,紅松幼樹與Hab Ⅲ呈正相關(guān),紅松成年樹與HabⅠ呈正相關(guān)。在Hab Ⅰ中,作為優(yōu)勢樹種——紅松,其成年樹與其他五種闊葉樹種和六種... 

【文章來源】：東北林業(yè)大學(xué)黑龍江省 211工程院校 教育部直屬院校

【文章頁數(shù)】：173 頁

【學(xué)位級別】：博士

【文章目錄】：
Abstract
摘要
1 Introduction
    1.1 Community assembly process
        1.1.1 Competition
        1.1.2 Habitat filtering
    1.2 Habitat heterogeneity
        1.2.1 Species-habitat association
        1.2.2 Niche differentiation
    1.3 Plant functional traits
    1.4 Plant growth
    1.5 Research purpose and significance
    1.6 Research technical route
    1.7 Key scientific questions to be solved
    1.8 Research contents
2 Study area and methods
    2.1 Study plot description
        2.1.1 Geographical condition
        2.1.2 Climate
        2.1.3 Soil
        2.1.4 Floristic
    2.2 Data collection
        2.2.1 Site history and forest dynamic monitoring data
        2.2.2 Topography and soil data
        2.2.3 Leaf area index data
    2.3 Methodology overview
    2.4 Habitat classification
3 Relationship between habitat association and demographic parameter
    3.1 Introduction
    3.2 Methods
        3.2.1 Data collection
        3.2.2 Species-habitat association
        3.2.3 Relative growth rate, mortality rate, and recruitment rate calculation
        3.2.4 Data analysis
    3.3 Results
        3.3.1 Species habitat association for trees and shrubs
        3.3.2 Species habitat association for trees in different life stages
        3.3.3 Variation in growth, mortality, and recruitment rate among the three habitat types
        3.3.4 Differences in growth and mortality rate between species-habitat association statuses in threelife stages and habitat types
        3.3.5 Differences in growth and mortality rate between species-habitat association statuses forshrubs across three habitat types
        3.3.6 Effects of habitat types, initial DBH, and species-habitat association status on demographicparameters for trees
        3.3.7 Effects of habitat types, initial DBH, and species-habitat association status on demographicparameters for shrub
    3.4 Discussion
        3.4.1 Soil organic carbon and slope shape local habitat types
        3.4.2 Habitat filtering support community assembly
        3.4.3 Habitat associations change at different life stages
        3.4.4 Habitat type shapes relative growth rate for different life stages
        3.4.5 Tree mortality is affected by tree density and environmental factors
        3.4.6 Species-habitat association effects on demographic parameters
    3.5 Chapter summary
4 Leaf trait variation in trees and shrubs at three habitat types
    4.1 Introduction
    4.2 Methods
        4.2.1 Leaf traits sample collection
        4.2.2 Leaf trait measurement
        4.2.3 Data analysis
    4.3 Results
        4.3.1. Leaf trait in differences life stages and habitat types within tree species
        4.3.2 Plant functional types shaped leaf trait variations in trees at three habitat types
        4.3.3 Effects of habitat type, plant functional type, and life stage on leaf traits in trees
        4.3.4 Leaf trait in differences habitat types within shrub species
        4.3.5 Species abundance shaped leaf trait variations in shrubs at three habitat types
        4.3.6 Effects of habitat type and species abundance on shrub leaf traits
    4.4 Discussion
        4.4.1 Life stage is an important determinant of all leaf traits for trees
        4.4.2 SLA, LNC, and LCC of trees are shaped by plant functional types
        4.4.3 Influence of habitat type on the LDMC, LNC, and LPC of trees
        4.4.4 Species abundance shapes the variation of leaf traits at three habitat types
    4.5 Chapter summary
5 Exploring the relationship between leaf traits and growth rate
    5.1 Introduction
    5.2 Methods
        5.2.1 Study site
        5.2.2 Leaf traits variable
        5.2.3 Soil variable
        5.2.4 Tree and shrub growth calculation
        5.2.5 Data analysis
    5.3 Results
        5.3.1 The relationship between leaf traits and soil variables and tree growth
        5.3.2 Mean AGR and RGR within and between functional group and life stage comparison at threehabitat types
        5.3.3 Effect of leaf trait and soil variation on broadleaf and conifer tree growth across different lifestages and habitat types
        5.3.4 The relationship between leaf traits and soil variables with shrub growth at three habitat types
        5.3.5 The relationship between leaf traits and soil variables with shrub growth
        5.3.6 Effect of leaf trait and soil variation on shrub growth across different habitat types
    5.4 Discussion
        5.4.1 Mean AGR and RGR vary across functional groups and life stages
        5.4.2 Leaf traits and soils effects on growth within functional groups are life stage dependence
        5.4.3 Leaf traits effect on tree growth depends on habitat types
        5.4.4 High-nutrient habitat explains soils-growth relationship across functional groups
    5.5 Chapter summary
6 Species diversity and stand structure-growth rates relationships
    6.1 Introduction
    6.2 Methods
        6.2.1 Study site
        6.2.2 Quantification of species and stand structural diversity across forest strata
        6.2.3 Soil organic carbon and slope
        6.2.4 Leaf area index measurement
        6.2.5 Quantification of the forest growth rate across forest strata
        6.2.6 Statistical analyses
    6.3 Results
    6.4 Discussion
    6.5 Chapter summary
7 Conclusion
References
Papers published in the period of PhD study
Acknowledgements
Resume


【參考文獻(xiàn)】：
期刊論文
[1]The influence of canopy-layer composition on understory plant diversity in southern temperate forests[J]. Luciana Mestre,Mónica Toro-Manríquez,Rosina Soler,Alejandro Huertas-Herrera,Guillermo Martínez-Pastur,María Vanessa Lencinas.  Forest Ecosystems. 2017(02)



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