庐山常绿阔叶林种间联结性及物种共存机制

doi:10.13292/j.1000-4890.202208.016

生态学杂志 ›› 2022, Vol. 41 ›› Issue (8): 1474-1481.doi: 10.13292/j.1000-4890.202208.016

庐山常绿阔叶林种间联结性及物种共存机制

李坚锋¹,潘萍¹,欧阳勋志^1,2*,彭松立³,邓文平^1,2,宁金魁¹

（¹鄱阳湖流域森林生态系统保护与修复国家林业和草原局重点实验室，江西农业大学林学院，南昌 330045； ²江西庐山森林生态系统国家定位观测研究站，江西九江 332900； ³江西庐山国家级自然保护区管理局，江西九江 332900）

出版日期:2022-08-10 发布日期:2022-08-12

Interspecific association and species coexistence mechanism of evergreen broad-leaved forest in Lushan Mountain.

LI Jian-feng¹, PAN Ping¹, OUYANG Xun-zhi^1,2*, PENG Song-li³, DENG Wen-ping^1,2, NING Jin-kui¹

(¹Key Laboratory of National Forestry and Grassland Administration for the Protection and Restoration of Forest Ecosystem in Poyang Lake Basin, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China; ²Jiangxi Lushan National Observation and Research Station of Chinese Forest Ecosystem, Jiujiang 332900, Jiangxi, China; ³Jiangxi Lushan National Nature Reserve Administration, Jiujiang 332900, Jiangxi, China).

Online:2022-08-10 Published:2022-08-12

摘要/Abstract

摘要： 分析江西庐山国家级自然保护区常绿阔叶林主要物种的种间联结性，探讨其常绿与落叶树种的共存机制，以期为生物多样性保护、自然植被恢复等提供科学依据。采用方差比率法、 χ²检验、联结系数（AC）以及Spearman秩相关系数检验等方法对重要值较大的32个主要物种进行联结性分析，并对其常绿与落叶树种进行生态位相似性和生态位重叠测定。结果表明：主要物种总体上呈显著正联结； χ²检验结果显示，正、负联结种对分别有263、230对，无联结种对有3对，正负联结比为1.143，检验显著率为27.42%；Spearman秩相关系数检验结果显示，正、负相关种对分别有222、274对，正负相关比为0.81，检验显著率为34.68%；种对间的AC值较小，其中介于-0.6<AC≤0.6的种对有345对，占总种对数的69.56%；常绿与落叶树种之间的正、负相关种对数分别为110、137对，正负相关比为0.80，检验显著率为34.41%；其生态位相似性和生态位重叠程度总体上均表现出较低水平，但也存在部分生态位重叠值较大的正相关种对。庐山自然保护区常绿阔叶林处于较稳定的演替后期，种间联结比较松散，物种分布相对独立。生境选择及资源需求互补或互利共生是常绿与落叶树种共存的主要原因。

关键词: 种间联结, 常绿阔叶林, 生态位, 共存机制, 庐山

Abstract: We explored the interspecific association of main species and the coexistence mechanism of evergreen and deciduous species in Lushan National Nature Reserve of Jiangxi Province, aiming at providing scientific basis for biodiversity conservation and vegetation restoration. The variance ratio test, χ² test, association coefficient (AC) and Spearman’s rank correlation coefficient test were used to analyze the associations of 32 main species with high importance value. Meanwhile, the niche similarity and niche overlap of evergreen and deciduous species were mea-sured. The overall association was significantly positive among the main species. Results of the χ² test showed that 263 species-pairs were positive and 230 species-pairs were negative, while 3 species-pairs had no association. The ratio of positive and negative association was 1.143, with a rate of 27.42% passing significance test. Results of the Spearman’s rank correlation coefficient test showed that 222 species-pairs were positive and 274 species-pairs were negative and that the ratio of positive and negative correlation was 0.81 with a rate of 34.68% passing significance test. The AC value of species-pairs was relatively low, with 345 species-pairs ranging from -0.6 to 0.6 and accoun ting for 69.56% of the total species-pairs. There were 110 species-pairs with positive correlation and 137 species-pairs with negative correlation between evergreen and deciduous tree species. The ratio of positive and negative correlation was 0.80 with a rate of 34.41% passing significance test. The degree of niche similarity and niche overlap was generally low, but there were some positively correlated species-pairs with large niche overlap. Together, our results suggest that the evergreen broad-leaved forest in Lushan Nature Reserve was at the later stage of stable succession. The loose interspecific association indicated that the distribution of species was relatively independent. Habitat selection, resource demand complementarity or mutualism were the main reasons for the coexistence of evergreen and deciduous species.

Key words: interspecific association, evergreen broad-leaved forest, niche, coexistence mechanism, Lushan Mountain.

李坚锋, 潘萍, 欧阳勋志, 彭松立, 邓文平, 宁金魁. 庐山常绿阔叶林种间联结性及物种共存机制[J]. 生态学杂志, 2022, 41(8): 1474-1481.

LI Jian-feng, PAN Ping, OUYANG Xun-zhi, PENG Song-li, DENG Wen-ping, NING Jin-kui. Interspecific association and species coexistence mechanism of evergreen broad-leaved forest in Lushan Mountain.[J]. Chinese Journal of Ecology, 2022, 41(8): 1474-1481.

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庐山常绿阔叶林种间联结性及物种共存机制

Interspecific association and species coexistence mechanism of evergreen broad-leaved forest in Lushan Mountain.

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