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Scientia Silvae Sinicae ›› 2013, Vol. 49 ›› Issue (9): 102-106.

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A Comparison on Soil Anti-Erodibility over Different Land Use Types on Loess Slope

Liu Dandan1, Zhang Penghui1, Wang Jian1, Xiao Qingli2   

  1. 1. College of Resource and Environment, Northwest A&F University Yangling 712100;
    2. Quality Supervision Station of Hydraulic Engineering in Weinan Weinan 714000
  • Received:2012-08-13 Revised:2013-05-13 Online:2013-09-25 Published:2013-09-19

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Abstract:

The soil anti-erodibility is important index to evaluate the property of resistance to destructive erosion and soil quality. We compared the difference in soil anti-erodibility on different land use types through the static water disintegration. We also tested and analyzed the correlation between anti-erodibility and soil physical and chemical properties. The results showed that the disintegrated quantity of Platycladus orientalis(Oriental Arborvitae) forest land was smallest. The crop land had far greater disintegrated quantity than the forest land and waste-grassland in the 0-10 cm. The 10-20 cm layers soil in Populus nigra (Black Poplar) forest was disintegrated least, followed by Pinus tabuliformis(Chinese Pine), Platycladus orientalis and Robinia pseudoacacia(Black Locust). There was no significant difference in disintegration quantity between waste-grassland and the crop land in deep soil layers. Above results indicated the soil physical and chemical properties were related to the vegetation cover. The soil disintegrating rate increased gradually with the time, with the initial rate maximum. There was a significant correlation between soil aggregate content and soil anti-erodibility. Forests were able to improve the soil anti-erodibility by effectively improve the soil physical and chemical properties.

Key words: loess slope, different land use types, soil anti-erodibility

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