[1]ZHANG Shuilin,MA Lina,WANG Yan,et al.Characteristics of Soil Carbon, Nitrogen and Phosphorus Stoichiometry and Enzyme Activity Under Different Ecological Restoration Types of Rocky Desertification in Fault Basin[J].Research of Soil and Water Conservation,2023,30(04):69-74.[doi:10.13869/j.cnki.rswc.2023.04.010.]
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Characteristics of Soil Carbon, Nitrogen and Phosphorus Stoichiometry and Enzyme Activity Under Different Ecological Restoration Types of Rocky Desertification in Fault Basin
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 04
Page number:
69-74
Column:
Public date:
2023-06-10
- Title:
- Characteristics of Soil Carbon, Nitrogen and Phosphorus Stoichiometry and Enzyme Activity Under Different Ecological Restoration Types of Rocky Desertification in Fault Basin
- Keywords:
- rocky desertification; stoichiometric characteristics; enzyme activity; fault basin; ecological restoration
- CLC:
- S714.2
- DOI:
- 10.13869/j.cnki.rswc.2023.04.010.
- Abstract:
- [Objective] The characteristics of soil nutrients and enzyme activities in the rocky desertification ecological restoration area of the fault basin were revealed, and the model with better restoration effect was screened to provide scientific and technological support for the restoration and treatment of rocky desertification. [Methods] The soil carbon, nitrogen and phosphorus contents and stoichiometric characteristics and enzyme activity characteristics(amylase, dehydrogenase, glucosidase, acid phosphatase, FDA hydrolase, urease)of four vegetation restoration types(Pinus yunnanensis+Schima argentea artificial mixed forest, Cupressus funebris Endl.+Schima argentea artificial mixed forest, Copressus duclouxiana artificial pure forest, natural vegetation restoration sample plots)were investigated in the study area of Jianshui County, Yunnan Province, a typical faulted basin. [Results] The average contents of soil organic carbon, total nitrogen and total phosphorus were 25.81 g/kg, 1.89 g/kg and 0.41 g/kg, respectively. The contents of organic carbon and total nitrogen were the highest under natural vegetation restoration, and the content of total phosphorus was the highest under dry cedar pure forest. Under natural vegetation restoration, soil C:P and N:P were the highest, and C:N was the highest in the Cupressus funebris Endl.+Schima argentea artificial mixed forest. Soil enzyme activity was different under different vegetation restoration. Soil amylase activity was highest in Copressus duclouxiana artificial pure forest, lowest in natural vegetation restoration, its enzyme activity was the highest under natural vegetation restoration. Correlation analysis showed that soil organic carbon, total nitrogen, total phosphorus and pH value had effects on soil enzyme activity. Redundancy analysis showed that the main nutrient factor affecting soil enzyme activity was total nitrogen, which explained 72.3% of soil enzyme activity variation. [Conclusion] The characteristics of soil nutrients and enzyme activities were different under different vegetation restoration modes. After 18 years of vegetation restoration, the soil nutrient conditions were better under the two restoration modes of natural vegetation restoration and dry cedar artificial pure forest, which were more suitable for vegetation restoration in this area.
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Last Update:
2023-06-10