九连山常绿阔叶林乔木优势种群的种间关联性分析

doi:10.3773/j.issn.1005-264x.2009.04.005

摘要/Abstract

摘要：

九连山国家级自然保护区分布着原生的典型常绿阔叶林, 且已形成不同的优势群落, 目前尚不清楚群落乔木层中优势物种之间的作用关系。采用2×2联列表, 通过方差分析, χ²检验、Pearson相关系数和Spearman秩相关系数检验, 对九连山常绿阔叶林乔木层中重要值较高的28个优势种群、378个种对间的关联性进行定量研究。方差分析表明: 28个优势种群的总体种间关联性呈显著的正关联, 反映该群落处于较稳定的顶极阶段。不同检验结果表明: χ²检验结果有140个种对呈正相关, 238个种对呈负相关, 正负关联比为0.588; Pearson相关系数检验有104个种对呈正相关, 274个种对呈负相关, 正负关联比为0.380; Spearman秩相关系数检验有144个种对呈正相关, 234个种对呈负相关, 正负关联比为0.615; 与Pearson相关系数检验方法相比, Spearman秩相关系数检验具有较高的灵敏度。378个种对中, 绝大多数种对的联结关系未达到显著水平, 种对间的独立性相对较强, 这种种间联结的松散性可能与群落目前的发展阶段及物种本身的生态学特性有关, 各群落正处于稳定的顶极阶段。根据28个优势种群对环境的适应方式和主导生态因素, 可将它们划分为阳生植物和阴生植物两大生态种组。

关键词: 九连山, 常绿阔叶林, 种间关联, 方差比率, 2×2 联列表, 相关检验

Abstract:

Aims The Jiulianshan Mountain National Nature Reserve of Jiangxi is rich in typical natural evergreen broad-leaved forest communities; however, little is known about the interspecific relationships of the species that dominate the tree layer. Our objective was to investigate how the dominant species in the tree layer interact with each other and with other species.
Methods We sampled 7 600 m² with 19 plots in the typical evergreen broad-leaved communities, selected 28 dominant species according to importance values and studied interspecific associations and correlations by using variance ratio (VR) analysis of the overall association and χ² test, Pearson correlation coefficient test and Spearman rank correlation coefficient test based on 2×2 contingency tables of species presence/absence data.
Important findings Significantly positive correlations exist among the 28 dominant species, which suggests that the evergreen broad-leaved forest is stable. The interspecific correlations among 378 species-pairs of the 28 dominant tree species showed that 140, 104 and 144 species-pairs were positively correlated, while 238, 274 and 234 species-pairs had negative correlations, and the ratios of positive and negative correlations were 0.588, 0.380 and 0.615, based on χ²-test for 2×2 contingency table, Pearson correlation coefficient test, and Spearman rank correlation coefficient test, respectively. The Spearman rank correlation coefficient test was more sensitive than the Pearson correlation coefficient test. Most of the total 378 species pairs did not show significant association, which may be related to the seral stage of the forest and the ecological characteristics of the species. The forest was at a stable late-successional stage. According to their adaptability to the environment and relationships between plants and environment, the 28 species were divided into two ecological species groups: shade-intolerant and shade-tolerant plants.

Key words: Jiulianshan Mountain, evergreen broad-leaved forest, inter-specific correlation, variance ratio, 2×2 contingency table, correlation coefficient test

简敏菲, 刘琪璟, 朱笃, 游海. 九连山常绿阔叶林乔木优势种群的种间关联性分析. 植物生态学报, 2009, 33(4): 672-680. DOI: 10.3773/j.issn.1005-264x.2009.04.005

JIAN Min-Fei, LIU Qi-Jing, ZHU Du, YOU Hai. INTER-SPECIFIC CORRELATIONS AMONG DOMINANT POPULATIONS OF TREE LAYER SPECIES IN EVERGREEN BROAD-LEAVED FOREST IN JIULIANSHAN MOUNTAIN OF SUBTROPICAL CHINA. Chinese Journal of Plant Ecology, 2009, 33(4): 672-680. DOI: 10.3773/j.issn.1005-264x.2009.04.005

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https://www.plant-ecology.com/CN/Y2009/V33/I4/672

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生态种组 Ecological species groups	种名 Plant species	生境主要特点 Characteristics of the habitat
生态种组 Ecological species groups	种名 Plant species	光照 Sunshine 水分 Water
第一生态种组 First ecological species groups	拟赤杨Alniphyllum fortunei、枫香Liquidambar formasana、润楠Machilus microcarpa、罗浮栲Castanopsis fabri、鹿角栲Castanopsis lamontii、紫树Nyssa sinensis、柃木Eurya japonica、柳叶毛蕊茶Camellia salicifolia、青榨槭Acer davidii、观光木Tsoongiodendron odorum、猴欢喜Sloanea sinensis、深山含笑Manglietia maudiae、罗浮槭Acer fabri、杉木Cunninghamia lanceolata	充足 Abundant 不足 Shortage
第二生态种组 Second ecological species groups	木荷Schima superba、丝线吊芙蓉Rhododendron westlandi、甜槠Castanopsis eyrei、米槠Castanopsis carlesii、赤楠Syzygium buxifolium、丝栗栲Castanopsis fargesii、罗浮柿Diospyros morrisiana、南岭栲Castanopsis fordii、岭南杜鹃Rhododendron mariae、黄丹木姜子Litsea elongata、马银花Rhododendron ovatum、细叶香桂、Cinnamomum subavenium、柳杉Cryptomeria fortunei、南方红豆杉Taxus mairei	不足 Shortage 充足 Abundant

生态种组 Ecological species groups	种名 Plant species	生境主要特点 Characteristics of the habitat
生态种组 Ecological species groups	种名 Plant species	光照 Sunshine 水分 Water
第一生态种组 First ecological species groups	拟赤杨Alniphyllum fortunei、枫香Liquidambar formasana、润楠Machilus microcarpa、罗浮栲Castanopsis fabri、鹿角栲Castanopsis lamontii、紫树Nyssa sinensis、柃木Eurya japonica、柳叶毛蕊茶Camellia salicifolia、青榨槭Acer davidii、观光木Tsoongiodendron odorum、猴欢喜Sloanea sinensis、深山含笑Manglietia maudiae、罗浮槭Acer fabri、杉木Cunninghamia lanceolata	充足 Abundant 不足 Shortage
第二生态种组 Second ecological species groups	木荷Schima superba、丝线吊芙蓉Rhododendron westlandi、甜槠Castanopsis eyrei、米槠Castanopsis carlesii、赤楠Syzygium buxifolium、丝栗栲Castanopsis fargesii、罗浮柿Diospyros morrisiana、南岭栲Castanopsis fordii、岭南杜鹃Rhododendron mariae、黄丹木姜子Litsea elongata、马银花Rhododendron ovatum、细叶香桂、Cinnamomum subavenium、柳杉Cryptomeria fortunei、南方红豆杉Taxus mairei	不足 Shortage 充足 Abundant