Relationship between community type of wetland plants and site elevation on sandbars of the East Dongting Lake, China |
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Authors: | Jing-ming Zheng Ling-yan Wang Su-yan Li Jin-xing Zhou Qi-xiang Sun |
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Institution: | (1) Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, 100083, P. R. China;(2) Key Laboratory for Forest Tree Breeding of State Forestry Administration, Chinese Academy of Forestry, Beijing, 100091, P. R. China |
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Abstract: | Plant communities on sandbars were important, and restoration of degraded wetland were significant to biological conservation
in the East Dongting Lake region. In this study, typical wetland community types on sandbars and their site elevation were
surveyed to explore relationship between community distribution and site elevation. Results show that eight major communities
in this region were wetland communities dominated by Juncus effusus, Carex brevicuspis, Polygonum hydropiper, Salix triandra, Oenanthe Javanica, Phalaris arundinacea, Miscanthus
sacchariflorus and Phragmites communis respectively. These communities had obvious constructive species and companion species, while site elevation could affect
community composition and their species diversity. On sandbars in the East Dongting Lake, vegetation was largely composed
of hygrophytes companied with a few mesophytes. The higher the site elevation was, the nearer the site was to the water, and
the lower community diversity became. Except soil humidity and site elevation, growth period of plants after inundation could
also affect species richness in the communities. |
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Keywords: | wetland restoration sandbar elevation the East Dongting Lake |
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