Distribution patterns and changes of aquatic plant communities in Napahai Wetland in northwestern Yunnan Plateau, China

XIAO Derong1, TIAN Kun2, YUAN Hua3, YANG Yuming3, LI Ningyun3, XU Shouguo3

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Front. Biol. ›› DOI: 10.1007/s11515-008-0043-9

Distribution patterns and changes of aquatic plant communities in Napahai Wetland in northwestern Yunnan Plateau, China

  • XIAO Derong1, TIAN Kun2, YUAN Hua3, YANG Yuming3, LI Ningyun3, XU Shouguo3
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Abstract

Using GPS technology and community research methods for plant communities, we investigated the distribution patterns of aquatic plant communities in the high plateaus of the Napahai Wetlands, Yunnan, China, as well as the species changes of plant communities compared with that of 24 years ago since 2005. We found that the types and numbers of aquatic plant communities have changed. Some pollution-tolerant, nutrient-loving plant communities such as Scirpus tabernaemontani, Zizania caduciflora, Myriophyllum spicatum, and Azolla imbricata flourished, while the primary aquatic plant communities were reduced or even disappeared. The number of aquatic plant communities were increased from nine to 12 with the addition of two new emergent plant communities and one new floating-leaved plant community. The increase in emergent plant communities was significant. From east to west and from south to north, various types of plant communities were continuously distributed, including floating-leaved plant communities, emergent plant communities and submerged plant communities. The composition of the communities became more complicated and the number of accompanying species increased, while the percentage ratio of dominant plant species declined. In 2005, the coverage of emergent plant communities was the largest (528.42 hm2) followed by submerged plant communities (362.50 hm2) and the floating-leaf plant communities was the smallest (70.23 hm2). The variations in the distribution of aquatic plant communities in the Napahai Wetlands reflect the natural responses to the change of the wetland ecological environment. This study indicates that human disturbances have led to an inward movement of the wetland shoreline, a decrease in water quality and a reduction in wetland habitat.

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XIAO Derong, TIAN Kun, YUAN Hua, YANG Yuming, LI Ningyun, XU Shouguo. Distribution patterns and changes of aquatic plant communities in Napahai Wetland in northwestern Yunnan Plateau, China. Front. Biol., https://doi.org/10.1007/s11515-008-0043-9

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