古田山24 ha森林动态监测样地常绿阔叶林群落结构和组成动态: 探讨2008年冰雪灾害的影响

doi:10.17520/biods.2015051

生物多样性 ›› 2015, Vol. 23 ›› Issue (5): 610-618. DOI: 10.17520/biods.2015051

所属专题：森林动态监测样地专题

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古田山24 ha森林动态监测样地常绿阔叶林群落结构和组成动态: 探讨2008年冰雪灾害的影响

金毅¹, 陈建华², 米湘成³, 任海保³, 马克平³, 于明坚^1,^*()

1 浙江大学生命科学学院, 杭州 310058
2 浙江师范大学生态研究所, 浙江金华 321004
3 中国科学院植物研究所植被与环境变化国家重点实验室, 北京 100093

收稿日期:2015-03-06 接受日期:2015-05-19 出版日期:2015-09-20 发布日期:2015-10-12
通讯作者: 于明坚
基金资助:
国家科技支撑计划课题(2008BAC39B02)和国家自然科学基金对外交流项目(31061160188)

Impacts of the 2008 ice storm on structure and composition of an evergreen broad-leaved forest community in eastern China

Yi Jin¹, Jianhua Chen², Xiangcheng Mi³, Haibao Ren³, Keping Ma³, Mingjian Yu^1,^*()

1 College of Life Sciences, Zhejiang University, Hangzhou 310058
2 Institute of Ecology, Zhejiang Normal University, Jinhua, Zhejiang 321004
3 State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093

Received:2015-03-06 Accepted:2015-05-19 Online:2015-09-20 Published:2015-10-12
Contact: Yu Mingjian

摘要/Abstract

摘要：

常绿阔叶林是我国亚热带地区的地带性植被, 其中最为典型而且分布最广泛的是中亚热带常绿阔叶林。为探讨2008年初我国南方发生的冰雪灾害对中亚热带常绿阔叶林的影响, 以浙江省古田山国家级自然保护区24 ha森林动态监测样地内的中亚热带常绿阔叶林为例, 研究了该森林在冰雪灾害前后(2005-2010年)的群落结构及物种组成动态。结果表明, 群落径级结构变化较小, 但群落整体补员不足且死亡率较高; 多个粒度上的群落动态显示出一致的衰退特征, 但不同生境间的群落动态存在差异; 物种多度和胸高截面积多呈减小趋势, 但频度和重要值变化不明显。同时, 物种的多度、胸高截面积、频度和重要值等次序均无明显变化。这说明2008年发生的冰雪灾害对古田山中亚热带常绿阔叶林群落的短期动态产生了较大的负面影响, 且其影响程度与植物胸径和地形等因素密切相关; 同时也反映了古田山中亚热带常绿阔叶林群落结构对冰雪灾害干扰具有一定的抵抗力。

关键词: 常绿阔叶林, 群落动态, 径级结构, 冰雪灾害, 森林动态监测样地, 古田山国家级自然保护区

Abstract

Subtropical evergreen broad-leaved forest (EBLF) is the zonal vegetation of the Chinese subtropical region, among which the most typical and widely distributed type is mid-subtropical EBLF. To explore how the 2008 ice-storm affected the short-term dynamics of mid-subtropical EBLF, we examined the community structure and species composition pre and post the ice storm of the 24 ha forest dynamics plot in Gutianshan. We found that although the DBH size class structure was highly consistent pre and post the ice storm, community level recruitment was low and mortality was high. Results of community dynamics analyses conducted at various grain size scales implied general depressions, despite the different rates of change between habitats. Species abundance and ABH (area at breast height) both decreased but species frequency and IV (importance value) did not change. Species in abundance, ABH, frequency and IV were highly consistent pre and post the ice storm. The results imply that the 2008 ice storm negatively impacted the short-term dynamics of the EBLF community in Gutianshan. The severity of impact was associated with stem DBH and topography. However, the community structure of this old-growth forest showed its considerable resistance to ice storm disturbance.

Key words: evergreen broad-leaved forest, community dynamics, DBH size class structure, ice storm, forest dynamics plot, Gutianshan National Nature Reserve

金毅, 陈建华, 米湘成, 任海保, 马克平, 于明坚 (2015) 古田山24 ha森林动态监测样地常绿阔叶林群落结构和组成动态: 探讨2008年冰雪灾害的影响. 生物多样性, 23, 610-618. DOI: 10.17520/biods.2015051.

Yi Jin, Jianhua Chen, Xiangcheng Mi, Haibao Ren, Keping Ma, Mingjian Yu (2015) Impacts of the 2008 ice storm on structure and composition of an evergreen broad-leaved forest community in eastern China. Biodiversity Science, 23, 610-618. DOI: 10.17520/biods.2015051.

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链接本文: https://www.biodiversity-science.net/CN/10.17520/biods.2015051

https://www.biodiversity-science.net/CN/Y2015/V23/I5/610

图/表 5

图1 2005-2010年群落径级结构动态。(A)显示了2005年及2010年的群落径级结构。柱形的白色部分为2010年各径级个体数, 白色部分加上灰色部分表示2005年各径级个体数, 灰色部分则表示2005-2010年间各径级个体数的减少数量。(B)显示了相对死亡率随着径级的变化情况。虚线分隔相对死亡率> 1和< 1的情况, 虚线上方数值表示观测死亡率大于预期死亡率, y值越大则差异越大; 虚线下方数值表示观测死亡率小于预期死亡率, y值越小则差异越大。

Fig. 1 Dynamics of DBH size class community structure between 2005 and 2010. Diagram (A) shows DBH size class community structures in 2005 and 2010. The empty part of the bar represents the number of individuals of a DBH size class in 2010, the empty plus the grey filled part represent the number of individuals of a DBH size class in 2005, and the grey filled part represents the decrease in number of individuals between 2005 and 2010. (B) shows the change in relative mortality rate with DBH size class. The dotted line divides relative mortality rate values > 1 from values < 1. Values above the dotted line indicate observed mortality rate > expected mortality rate, larger y value represent larger difference; values below the dotted line indicate observed mortality rate < expected mortality rate, smaller y value represent larger difference.

图2 2005年与2010年多个粒度群落生物多样性、个体数及胸高截面积的比较。箱形表示上下四分位数范围及中位数(粗线); 箱形上下方横线分别为上下四分位数加减1.5倍四分位距。图中不同字母表示组间差异显著(P < 0.05)。

Fig. 2 Comparisons of the biodiversity, number of individuals and area at breast height (ABH) of multiple grain sized assemblages between 2005 and 2010. Box represents the interquartile range and the median (the thick line); the two whiskers up and below the box represent the upper quantile plus 1.5 times interquantile range and the lower quantile minus 1.5 times interquantile range, respectively. Different letters represent significant difference (P < 0.05).

表1 不同生境群落之间生物多样性、个体数及胸高截面积变化率的单因素方差分析结果

Table 1 One-way analysis of variance results of the rates of change in biodiversity, number of individuals and area at breast height (ABH) among different habitat assemblages

图3 2005-2010年间物种多度、胸高截面积、频度及重要值的变化率。竖直虚线右侧变化率为正值,左侧为负值。

Fig. 3 Rates of change in species abundance, area at breast height (ABH), frequency and importance value (IV) between 2005 and 2010. The right side of the vertical dotted line indicates positive rate of change, the left side indicates negative rate of change.

图4 2005年与2010年间物种多度、胸高截面积、频度以及重要值的相关性。○, 耐阴种, +, 阳性种。实线分隔2005-2010年间数值增大与减小的物种, 实线上方为增大种, 下方为减小种。(A)中, 虚线左侧为稀有种, 右侧为常见种。

Fig. 4 Correlations of species abundance, area at breast height (ABH), frequency and importance value (IV) between 2005 and 2010. ○, shade-tolerant species; +, shade-intolerant species. The solid line divides species increased in value from species decreased in value between 2005 and 2010. Values above the solid line indicate increase and below indicate decrease. In (A), on the left side of the dotted line are rare species and on the right side are common species.

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古田山24 ha森林动态监测样地常绿阔叶林群落结构和组成动态: 探讨2008年冰雪灾害的影响

Impacts of the 2008 ice storm on structure and composition of an evergreen broad-leaved forest community in eastern China

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