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Effect of Rainfall on Soil Aggregate Breakdown and Transportation on Cultivated Land in the Black Soil Region of Northeast China

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Listed:
  • Yikai Zhao

    (School of Forestry, Northeast Forestry University, Harbin 150040, China)

  • Han Wang

    (School of Forestry, Northeast Forestry University, Harbin 150040, China)

  • Xiangwei Chen

    (School of Forestry, Northeast Forestry University, Harbin 150040, China
    Key Laboratory of Sustainable Forest Ecosystem Management Ministry of Education, Northeast Forestry University, Harbin 150040, China)

  • Yu Fu

    (School of Forestry, Northeast Forestry University, Harbin 150040, China)

Abstract

To clarify the characteristics of soil aggregate breakdown and transportation by rainfall, the cultivated land (0–10 cm) of the black soil region of Northeast China was taken as the research object, with rainfall intensities of 78 and 127 mm·h −1 ( RI 78 , RI 127 ), to analyze the differences in the mass transported, fraction size distribution, mean weight diameter ( MWD ) and enrichment rate of aggregates before and after runoff generation. Before runoff generation, the total mass of transported aggregates, the total mass percentage of the aggregate fraction size < 1 mm and the MWD of the transported aggregates were not significantly different at rainfall intensities of 78 and 127 mm·h −1 . After runoff generation, the mass of transported aggregates was greater than that before runoff generation, and the mass of transported aggregates under RI 78 was significantly higher than that under RI 127 , by 15.6%. The mass percentage of the aggregate fraction size < 0.053 mm after runoff generation was significantly reduced by 8.4% and 19.4% compared to that before runoff generation. After runoff generation, compared with before runoff generation, the MWD of the transported aggregates was significantly reduced by 50.9% and 50.3% under RI 78 and RI 127 , respectively. Compared with before runoff generation, the mass percentage of small macroaggregates increased gradually with the increase in the transport distance. The aggregate fraction size > 0.25 mm was lost, and the fraction size < 0.25 mm was enriched, before and after runoff generation. A comparative study on the characteristics of black soil aggregate breakdown and transportation before and after runoff generation can provide a theoretical basis for the mechanism of soil erosion and the transportation of cultivated soil in the black soil region of Northeast China.

Suggested Citation

  • Yikai Zhao & Han Wang & Xiangwei Chen & Yu Fu, 2022. "Effect of Rainfall on Soil Aggregate Breakdown and Transportation on Cultivated Land in the Black Soil Region of Northeast China," Sustainability, MDPI, vol. 14(17), pages 1-12, September.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:17:p:11028-:d:906201
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    References listed on IDEAS

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    1. Tao Liu & Jian Luo & Zicheng Zheng & Tingxuan Li & Shuqin He, 2016. "Effects of rainfall intensity on splash erosion and its spatial distribution under maize canopy," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 84(1), pages 233-247, October.
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    Cited by:

    1. Xueshan Wang & Mingming Guo & Jielin Liu & Xiaolei Kong & Daqing Peng & Qiang Zhang, 2022. "Soil Anti-Scourabilities of Four Typical Herbaceous Plants and Their Responses to Soil Properties, Root Traits and Slope Position in Northeast China," Sustainability, MDPI, vol. 14(24), pages 1-13, December.
    2. Masumeh Ashgevar Heydari & Seyed Hamidreza Sadeghi & Atefeh Jafarpoor, 2023. "Hydrological Properties of Rill Erosion on a Soil from a Drought-Prone Area during Successive Rainfalls as a Result of Microorganism Inoculation," Sustainability, MDPI, vol. 15(19), pages 1-19, September.

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