[1]GU Chengtian,LUO Bin,WANG Heng,et al.Water Quality Evolution and Effect of Nitrogen and Phosphorus ccumulation in Wetland of Ruoergai Plateau[J].Research of Soil and Water Conservation,2020,27(04):47-53.
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Water Quality Evolution and Effect of Nitrogen and Phosphorus ccumulation in Wetland of Ruoergai Plateau
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 04
Page number:
47-53
Column:
目次
Public date:
2020-06-20
- Title:
- Water Quality Evolution and Effect of Nitrogen and Phosphorus ccumulation in Wetland of Ruoergai Plateau
- Keywords:
- Ruoergai Plateau; wetland; plant diversity; N and P accumulation
- CLC:
- Q948; X832
- DOI:
- -
- Abstract:
- In order to explore the water quality evolution and effect of nitrogen and phosphorus accumulation in wetland of Ruoergai Plateau, the evolution characteristics of water quality and the accumulation effect of nitrogen and phosphorus were studied by field survey and laboratory test from 2016 to 2018, and the relationship between vegetation diversity and water quality was studied by using the method of redundant analysis(RDA). The results showed that:(1)the Margalef richness index, Shannon Wiener diversity index, Simpson dominance index and Pielou evenness index firstly increased and then decreased with the change of seasons, and those indices in autumn and summer were significantly higher than those in spring and winter(p<0.05);(2)TN, NH+4-N, TP, potassium permanganate index, BOD5 and CODcr concentrations in water quality showed the consistent change trend with seasons, which were the highest in autumn, followed by summer, and the lowest in spring; TN, NH+4-N, potassium permanganate index, BOD5 and CODcr concentrations showed thesignificant differences in different years (p<0.05), while TP had no significant differences in different years and seasons (p>0.05);(3)the accumulation of N and P had the obvious consistent patterns, which were the highest in autumn, followed by summer, and the lowest in spring; the mean accumulation of N and P showed an increasing trend from 2016 to 2018, and the mean accumulations of N were significantly different in different years (p<0.05), while the mean accumulations of P had no significantly difference in different years and seasons (p>0.05);(4)there was a significant linear relationship between the accumulations of N and P and the biomass, N and P contents, respectively (p<0.05); therefore, the accumulations of N and P could be evaluated through the biomass and N and P contents. RDA sequence diagram showed that BOD5 and CODcr concentrations were the main factors influencing wetland plant diversity in Ruoergai Plateau.
- References:
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Last Update:
2020-07-09