[1]LIU Qixia,LIU Xiaofang,TIAN Xin,et al.Effects of Soil Properties on Preferential Flow Development Under Different Land Use Types in the Lower Reaches of Fenhe River Basin[J].Research of Soil and Water Conservation,2023,30(05):146-153,161.[doi:10.13869/j.cnki.rswc.2023.05.019.]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 05
Page number:
146-153,161
Column:
Public date:
2023-08-10
- Title:
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Effects of Soil Properties on Preferential Flow Development Under Different Land Use Types in the Lower Reaches of Fenhe River Basin
- Author(s):
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LIU Qixia, LIU Xiaofang, TIAN Xin, YANG Lu, ZHAO Yonggang
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(School of Life Science, Shanxi Normal University, Taiyuan 030031, China)
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- Keywords:
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preferential flow; dye tracer; multi-index evaluation; soil physical and chemical properties
- CLC:
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S152; S153; S157.1
- DOI:
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10.13869/j.cnki.rswc.2023.05.019.
- Abstract:
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[Objective] This paper reveals the heterogeneity of physical and chemical properties in soils under different land use patterns in the lower reaches of Fenhe River basin, and expounds its influence on the development of preferential flow. [Methods] Three land use types in the lower reaches of the Fenhe River basin were selected in the field staining and tracing experiments to evaluate the development degree of preferential flow and analyze the differences of soil properties between preferential flow areas and non-preferential flow areas and their effects on preferential flow characteristics. [Results] The development degrees of preferential flow indicated by the index of preferential flow under different land use types were grassland(1.18), cropland(1.12)and orchard(0.88), respectively. Soil properties other than pH were significantly affected by land use types, soil layers, and preferential flow areas(p<0.05). The increase of soil organic matter, total porosity, capillary porosity and saturated hydraulic conductivity, and the decrease of bulk density contributed to the development of preferential flow. The multiple stepwise regression analysis showed that the organic matter and total porosity in preferential flow areas were the main factors affecting the dyeing area ratio, while the organic matter, bulk density and sand particles in non-preferential flow areas were the main factors affecting the non-dyeing area ratio. [Conclusion] Compared with farmland and orchard, the soil physical and chemical properties of grassland have higher heterogeneity in soil layers and preferential flow areas, which has a greater impact on the development of preferential flow.