[1]TAN Haixia,JIN Zhaoguang,SUN Fuqiang,et al.Correlation Between the Stoichiometric Characteristics of Plants and Soils in Luanhe Estuary Wetland[J].Research of Soil and Water Conservation,2019,26(02):68-73.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 02
Page number:
68-73
Column:
Public date:
2019-04-28
- Title:
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Correlation Between the Stoichiometric Characteristics of Plants and Soils in Luanhe Estuary Wetland
- Author(s):
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TAN Haixia1, JIN Zhaoguang2, SUN Fuqiang2, GENG Shigang1
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1. Hebei University of Environmental Engineering, Qinhuangdao, Hebei 066102, China;
2. Management Office of Changli Golden Coast National Nature Reserve, Qinhuangdao, Hebei 066102, China
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- Keywords:
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estuary of Luanhe River; wetland; soil; ecological stoichiometry
- CLC:
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Q948.1;S153
- DOI:
-
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- Abstract:
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The changes of soil carbon, nitrogen and phosphorus in estuarine wetland significantly affect the productivity of wetland ecosystem. A typical plant community was selected to take soil and plant samples in the estuary of Luanhe River. The nutrient contents of samples were determined and analyzed. The results showed that the nutrient contents of the above-ground parts and underground parts of different plant communities decreased in the order: C > N > P; there was a certain difference in soil nutrient contents between different plant communities. The variation ranges of soil carbon, nitrogen and phosphorus contents were (3.8±0.44)~(10.52±0.6) g/kg, (0.99±0.27)~(2.24±0.51) g/kg, (0.99±0.27)~(2.24±0.51) g/kg, respectively. The soil nutrient contents in the study area were lower than those of the national average values. Stoichiometric ratios of plants decreased in the order: C:P > C:N > N:P; stoichiometric ratios of soils decreased in the order: C:N > C:P > N:P, which indicated that the soil organic matter decomposition rate was fast, nitrate leaching risk and nitrogen mineralization degree were high. Therefore, increasing the content of soil organic matter and nitrogen fertilizer can improve the productivity of wetland ecosystem in this area.