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Bulletin of Botanical Research ›› 2024, Vol. 44 ›› Issue (5): 738-752.doi: 10.7525/j.issn.1673-5102.2024.05.011

• Physiology and Ecology • Previous Articles     Next Articles

Species Composition and Community Characteristics of Summit Mossy Dwarf Forests of Bozhu Mountain, Wenshan County, Yunnan Province, China

Hong HUANG1,2,3, Yumin SHUI1,3, Zhiming ZHANG4, Jiawang LUO5, Deming HE5, Chong YANG3, Wei WANG5, Wenhong CHEN1,3()   

  1. 1.Key Laboratory for Plant Diversity and Biogeography,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201
    2.University of Chinese Academy of Sciences,Beijing 100049
    3.Tropical Mountain Forest Eco-station in Southeast Yunnan,Pingbian 661200
    4.School of Ecology and Environmental Science,Yunnan University,Kunming 650091
    5.Wenshan National Nature Reserve Administration,Wenshan 663000
  • Received:2024-03-05 Online:2024-09-20 Published:2024-09-23
  • Contact: Wenhong CHEN E-mail:whchen@mail.kib.ac.cn

Abstract:

To complement and improve the community composition and structural characteristics of the summit mossy dwarf forests in Southwest China, based on the community survey data of the 1 hm2 forest dynamic plot(FDP), the Center for Tropic Forest Sciences(CTFS) standard was used to investigate all woody trees with DBH ≥ 1 cm in the plot. Then, ten standard plots(a total of 0.6 hm2, 20 m×30 m each) were selected from the 1 hm2 FDP, and all vascular plants within the 0.6 hm2 plot were investigated and counted by plant community inventory. The species composition and community structure were analyzed by the aspects of species richness and quantitative characters, and the diameter class structure of the dominant tree species. The main results were as follows: (1)there were 3 614 woody individuals from 42 species, 32 genera, 20 families, with DBH≥1 cm within the 1 hm2 FDP; in the 0.6 hm2 plot, there were 103 species of vascular plants in 42 families, 67 genera and 1 536 individuals of 24 woody species with height≥3 m; (2)Rhododendron sinofalconeri was, absolutely dominant in the community, with important values 3-4 times higher than those of the secondary dominant species; (3)The age structure of the whole community showed a “L” shape; however, Rhododendron sinofalconeri was dominant in adult individuals, being different from other dominant species; (4)The community was composed of tree, shrub and herb layers as well as epiphytes and parasitic plants, and named as Rhododendron sinofalconeriClethra delavayi var. yuianaIllicium tsaii summit mossy dwarf forests. In the Bozhu Mountain, Wenshan county, Yunnan, China, the mossy dwarf forest community was rich in species, stable in composition, prominent in dominant species and good in their regeneration. The canopy appearance of the community was flat, and the community succession was in a mature forest state.

Key words: community structure, DBH-class distribution, Rhododendron sinofalconeri, species composition

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