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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (4): 1034-1040    DOI: 10.7522/j.issn.1000-694X.2013.00146
Biology and Soil     
Plant Diversity Characteristics in Poyang Lakeside
DUAN Jian1,2, YANG Jie1,2, LIU Ren-lin3, WANG Bang-wen2, MO Ming-hao2
1.College of Landscape and Art, Jiangxi Agricultural University, Nanchang 330045, China;
2.Jiangxi Provincial Institute of Soil and Water Conservation, Nanchang 330029, China;
3.Department of Life and Environment Science, Gannan Normal University, Ganzhou 341000, Jiangxi, China
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Abstract  

In this paper, sand plant composition and dominant groups in the Duobao sand dunes in Poyang Lakeside were described by using line investigation. The change characteristics of plant composition, species diversity,ecological habits and life-form in the process of desertification were analyzed. The results show that:(1)There are 58 family, 104 genera and 129 species in the studied area, among which Magnoliophyta play important role in the plant composition. In life-form spectrum, Phanerophytes are the most common and Therophytes are in the middle, which reflects the vegetation of region have the properties of Subtropical desert. Dominant groups are made up of Rosaceae, Papilionaceae, Compositae and Gramineae.(2)In the process of desertification, the plant composition have great changes. The dominant species on fixed dunes and unfixed sand dunes are respectively specialized and general species, and semifixed sand dunes consist of general and rare species. Species richness and diversity index are decreasing gradually with desertification. The change characteristics of ecological habits are that the percent of xerophytes are increasing gradually and mesophytes are decreasing on desertification. Hygrophytes only appear on fixed sand dunes. The increasing of Cryptophytes and decreasing of Therophytes are the main change characteristics of life-form. The life-form has changed significantly from semifixed to unfixed sand dunes stage.

Key words:  process of desertification      plant diversity      Poyang Lake     
Received:  01 June 2012      Published:  25 June 2012
ZTFLH:  Q948.15  

Cite this article: 

DUAN Jian1,2, YANG Jie1,2, LIU Ren-lin3, WANG Bang-wen2, MO Ming-hao2. Plant Diversity Characteristics in Poyang Lakeside. JOURNAL OF DESERT RESEARCH, 2013, 33(4): 1034-1040.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00146     OR     http://www.desert.ac.cn/EN/Y2013/V33/I4/1034

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