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Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (2): 44-51.doi: 10.11924/j.issn.1000-6850.casb2021-0173

Special Issue: 耕地保护

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Soil Anti-scourability of Vegetation Configurations in Black Soil Region of Northeast China

TONG Fan1(), WEI Lin1,2, LIU Xujun1,2, REN Xianping1,2, LI Zhifei1,2, WANG Ping1,2, HAO Yanfang1,2   

  1. 1Heilongjiang Institute of Water Sciences, Harbin 150070
    2Heilongjiang Key Laboratory of Soil and Water Conservation, Harbin 150070
  • Received:2021-02-22 Revised:2021-04-18 Online:2022-01-15 Published:2022-02-25

Abstract:

The research on soil anti-scourability and its influencing factors under different vegetation configuration in the black soil region of northeast China will provide a certain theoretical basis for the selection and allocation of plants for soil and water conservation. Field sampling and runoff scouring experiment were carried out. The results showed that the slope position had a certain influence on the soil anti-scourability. The soil anti-scourability of different slope positions for Lespedeza and Amorpha was different, and the change rule was different in the upper layer (0-10 cm) of the soil, and was similar in the lower layer (10-20 cm). The soil anti-scourability of different vegetation configurations gradually increased with the scouring time. The relationship between the influencing factors and the soil anti-scourability was ranked according to the correlation: sand content > soil water content > WSA0.25 mm > root surface area density > soil bulk density > organic matter. The model of Lespedeza + poplar was the best, indicating that Lespedeza was more suitable for growing under poplar trees, and could be used as an excellent tree species for soil and water conservation in the vegetation configuration of poplar forests.

Key words: vegetation configuration, soil anti-scourability, influencing factors, slope position, black soil region of Northeast China

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