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彭华, 杨湘云, 李晓明, 蔡燕红. 浙江海岛常绿阔叶林特征及其主要植物区系分析[J]. 植物科学学报, 2019, 37(5): 576-582. DOI: 10.11913/PSJ.2095-0837.2019.50576
引用本文: 彭华, 杨湘云, 李晓明, 蔡燕红. 浙江海岛常绿阔叶林特征及其主要植物区系分析[J]. 植物科学学报, 2019, 37(5): 576-582. DOI: 10.11913/PSJ.2095-0837.2019.50576
Peng Hua, Yang Xiang-Yun, Li Xiao-Ming, Cai Yan-Hong. Floristic characteristics and their significance in the conservation of evergreen broad-leaved forests in the Zhejiang islands[J]. Plant Science Journal, 2019, 37(5): 576-582. DOI: 10.11913/PSJ.2095-0837.2019.50576
Citation: Peng Hua, Yang Xiang-Yun, Li Xiao-Ming, Cai Yan-Hong. Floristic characteristics and their significance in the conservation of evergreen broad-leaved forests in the Zhejiang islands[J]. Plant Science Journal, 2019, 37(5): 576-582. DOI: 10.11913/PSJ.2095-0837.2019.50576

浙江海岛常绿阔叶林特征及其主要植物区系分析

Floristic characteristics and their significance in the conservation of evergreen broad-leaved forests in the Zhejiang islands

  • 摘要: 我国东海的浙江沿海分布有星罗棋布的岛屿,其中较大的岛屿上分布有地带性的常绿阔叶林(如:樟木林、青冈林、石栎林和特殊的亮叶猴耳环林或以落叶成分占优的其他森林),他们是标志性的植被类型或演替阶段,我们对这些植被类型中的优势植物种类进行了区系研究。结果显示,浙江海岛常绿阔叶林或类似森林中的优势和常见维管植物共有139种,只有热带亚洲成分、东亚成分中的中国-日本成分和中国特有成分贯穿于乔木层、灌木层、草本层和层外植物4大类中;进一步对15个木本中国特有种分析表明,其区系成分属亚热带性质,真正的温带性质不显著。在海岛这些植被出现的地段,还存在一些原生植被破坏后不同演替阶段的次生落叶阔叶林,其类型和面积都超过了地带性的常绿阔叶林,说明海岛除个别岛屿外曾经历了完全的破坏。目前,浙江海岛相应的演替阶段还不明确,它是研究特殊生境次生演替和恢复生态学的重要场所,这些常绿阔叶林和落叶林中富含重要的中国-日本海滨森林种类,对研究我国不同层次的常绿阔叶林具有重要的保护生物学意义。

     

    Abstract: There are many scattered islands along the coast of Zhejiang in the East China Sea. Among them, the larger islands are often distributed with zonal and stable evergreen broad-leaved forests, which includ Form. Cinnamomum camphora(L.) Presl with different chief compounds (CC), Form. Cyclobalanopsis glauca (Thunb.) Oerst. with different CC, Form. Lithocarpus glaber (Thunb.) Nakai, and Form. Abarema lucida (Benth.) Kosterm. Based on analysis of the vertical structure, we identified 139 dominant and common vascular plant species in the evergreen broad-leaved forests or similar forests in the Zhejiang islands, which showed Tropical Asia, East Asia (especially Sino-Japanese), and Chinese endemic elements for all synusiae from the canopy to the ground layer, including the tree layer, shrub layer, herbaceous layer, and inter-layers. Further analysis of the distributions of 15 Chinese endemic woody species showed that the floristic components were subtropical rather than temperate. In the evergreen broad-leaved forest zones, we identified secondary deciduous broad-leaved forests, which exhibited greater area and different succession stages after the destruction and deforestation of the native vegetation. Thus, secondary forests require protection as it is not clear what stage they belong to in the ecological succession. As such, these forests would be ideal areas for studying secondary succession and restoration ecology. The evergreen broad-leaved forests of the Zhejiang islands are of significance in biodiversity conservation due to their important characters and marine Sino-Japanese floristic elements.

     

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