[1]WANG Hua,HE Mei.Characteristic of Vegetation Distribution in Typical Shoaly Wetlands of Poyang Lake[J].Research of Soil and Water Conservation,2018,25(06):189-195.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 06
Page number:
189-195
Column:
Public date:
2018-10-26
- Title:
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Characteristic of Vegetation Distribution in Typical Shoaly Wetlands of Poyang Lake
- Author(s):
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WANG Hua, HE Mei
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Jiangxi Academy of Forestry, Nanchang 330032, China
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- Keywords:
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soil; environmental factor; vegetation; Poyang Lake
- CLC:
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Q145
- DOI:
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- Abstract:
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Investigations of variation of various soil environment factors in content in typical shoaly wetlands of the Poyang Lake under four different kinds of plant communities were carried out, and canonical correspondence analysis on the 20 vegetation sampling plots in the research zone was performed to analyze the major soil environment factors of the shoaly wetlands and their effects on vegetation distribution. The results showed that Jaccard, Sorensen and Cody index followed the order: Artemisia—Carex < Phragmites—Scripus triqueter < Carex—Cynodon dactylon < Carex—Scripus triqueter with the habitat gradient, while Bray curtis index showed the opposite change trend with the habitat gradient; soil total organic carbon, soil total nitrogen, soil nitrate nitrogen and soil ammonium nitrogen showed the same change, following the order: Artemisia—Carex > Phragmites—Scripus triqueter > Carex—Cynodon dactylon > Carex—Scripus triqueter, and soil available phosphorus increased in the order: Artemisia—Carex < Phragmites—Scripus triqueter < Carex—Cynodon dactylon < Carex—Scripus triqueter, while contents of soil total phosphorus in different plant communites were no significant difference (p > 0.05). Correlation analysis showed that Bray curtis index was negatively correlated to soil nutrients, and Jaccard, Sorensen and Cody index were positively correlated to soil nutrients. The absolute values of the correlation coefficients increased with the increase of distance from riparian zone. Canonical correspondence analysis showed that soil environmental factors had the obvious ecological gradients, and soil total organic carbon is the major factor and soil total nitrogen is also one of the important soil environment factors affecting distribution of vegetation in wetlands.