[1]Zhang Minrui,Wang Lina,Li Pan,et al.Influencing Factors of Soil Infiltration Performance of Five Types of Vegetation in Dry-Hot Valley Area of Jinsha River[J].Research of Soil and Water Conservation,2024,31(06):37-45.[doi:10.13869/j.cnki.rswc.2024.06.036]
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Influencing Factors of Soil Infiltration Performance of Five Types of Vegetation in Dry-Hot Valley Area of Jinsha River
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 06
Page number:
37-45
Column:
Public date:
2024-12-10
- Title:
- Influencing Factors of Soil Infiltration Performance of Five Types of Vegetation in Dry-Hot Valley Area of Jinsha River
- Keywords:
- Jinsha River dry-hot valley; soil infiltration; soil physical and chemical properties; soil infiltration model; path analysis
- CLC:
- S157; S714
- DOI:
- 10.13869/j.cnki.rswc.2024.06.036
- Abstract:
- [Objective]The aims of this study are to explore the the influence of plants on the soil water infiltration process on slope, and to provide guidance for ecological restoration and vegetation construction in the dry-hot valley of Jinsha River. [Methods]Five typical types of vegetation(Eucalyptus citriodora,Acacia confusa,Quercus franchetii,Phyllantthus emblica,Pinus yunnanensis)in Yongren County of Yunnan Province were taken as the research objects. Field investigation, indoor analysis and indoor infiltration test were used to explore the differences in soil infiltration performance of different vegetation types. [Results](1)With the increase of soil depth, soil infiltration performance gradually decreased, and there were significant differences(p<0.05 ).(2)There were significant differences in soil infiltration capacity among different vegetation types(p<0.05). The comprehensive ranking of soil infiltration capacity of five vegetation types was follows:Eucalyptus citriodoras>Phyllantthus emblica>Quercus franchetii>Pinus yunnanensis>Acacia confusa,(3)The Horton model has the best fitting degree for the soil infiltration performance of five typical vegetations in the dry-hot valley area of Yongren County, with an average fitting degree of 0.953, which can be used to simulate and predict the soil infiltration capacity of typical types of vegetation in the dry-hot valley area of Yongren County.(4)Soil infiltration performance was significantly correlated with soil bulk density, soil organic matter, non-capillary porosity and 5 mm aggregate content(p<0.05). Through the path analysis results, it could be seen that the content of 3～5 mm aggregates and soil non-capillary porosity were the decisive factors affecting the initial infiltration rate and average infiltration rate of soil, and the content of < 0.25 mm water-stable aggregates was the direct limiting factor on soil infiltration performance. [Conclusion]Among the five studied tree species, the improvement effect of soil structure in the Phyllanthus emblica plot is the best. Soil non-capillary porosity, < 0.25 mm soil water-stable aggregate content, 3～5 mm soil water-stable aggregate content are the decisive factors affecting soil infiltration performance. It is recommended to plant Phyllanthus emblica and Quercus variabilis in the study area, which can effectively improve soil infiltration performance and alleviate soil erosion.
- References:
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Last Update:
2024-12-10