| 四川卧龙地区珙桐群落特征的初步研究 |
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| 引用本文： | 钟章成,秦自生,史建慧.四川卧龙地区珙桐群落特征的初步研究[J].植物生态学报,1984,8(4):253-263. |
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| 作者姓名： | 钟章成 秦自生 史建慧 |
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| 作者单位： | 西南师范学院
(钟章成)，南充师范学院
(秦自生)，西南农学院(史建慧) |
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| 摘 要： | 珙桐是我国特产的第三纪古热带区系的孑遗植物。本文通过对珙桐群落的区系组成、地理成分和林木层的优势度分析，说明该群落是一种种类丰富，古老成分较多，并以珙桐为优势的具有残遗性质的混交林。通过生活型、叶级谱、叶型与叶质的分析，珙桐林是一种中亚热带亚高山垂直带谱上的典型的常绿、落叶阔叶混交林植被。此外，对群落结构和动态也作了一些分析。
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Preliminary Studies on the Phytocoenological Features of the Davidia involucrata Forests in the Wolong Region of Sichuan Province |
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| Zhong Zhangcheng,Qin Zisheng,Shi Jianhui.Preliminary Studies on the Phytocoenological Features of the Davidia involucrata Forests in the Wolong Region of Sichuan Province[J].Acta Phytoecologica Sinica,1984,8(4):253-263. |
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| Authors: | Zhong Zhangcheng Qin Zisheng Shi Jianhui |
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| Abstract: | Wolong is situated between latitude 30˚45′—31˚25′ north and longitude 102˚52′—103˚34′’east, and belongs to Wenchuan of Sichuan Province. It is one of the Chinese natural preserves under the protection of the state. Wolong has a large area of Davidia involucrata forests. Davidia involucrata is a tertiary relict species in our country. In this paper, the Davidia involucrata forests are analyzed on the basis of the floristic geographical composition, the dominant species and the physiognomy and structure of the community. The discussion is made mainly on the following points: 1. The floristic composition of the community in the site of Davidia involucrata forests consists of 154 species which belong to 60 families and 110 genera. This shows that the floristic geographical elements are very complex and varied. Among the 110 genera are relic floristic compositions of the tertiary period, such as Lithocarpus, Fagus, Helwingia, Tetracentron, Cercidiphyllum, Euptelea, Acer, Tilia, Juglans, Pterocarya, Viburnum etc, from which we can see the relic nature of the community. 2. In mixed Davidia involucrata communities, the Davidia involucrata is distributed in each layer, from that of seedlings to that of arbors, which indicates that this species is a stable dominant one. 3. The analysis of the life form spectrum, leaf-size class and leaf form from the 145 species showed that the nature of mixed Davidia involucrata communities is mixed deciduous-evergreen broadleaf forests. 4. The dynamics of communities shows that the mixed Davidia involucrata communities are stable and developmental communities. |
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