[1]ZHENG Boyi,FAN Haoming.Vertical Variation of Surface Soil Moisture in Ridge Tillage Farmland of Northeast Black Soil Region in China in Cold Season[J].Research of Soil and Water Conservation,2016,23(02):28-33.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 02
Page number:
28-33
Column:
Public date:
2016-04-28
- Title:
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Vertical Variation of Surface Soil Moisture in Ridge Tillage Farmland of Northeast Black Soil Region in China in Cold Season
- Author(s):
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ZHENG Boyi, FAN Haoming
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College of Water Conservancy, Shenyang Agricultural University, Shenyang 110866, China
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- Keywords:
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slope position; slope aspect; freezing period; surface soil; moisture migration; northeast black soil region
- CLC:
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S152.7
- DOI:
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- Abstract:
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Soil moisture is affected by land use type, topography and geomorphology, soil texture and other factors. In the freezing period, soil moisture changes in different earth surface environment are obviously different. The change of soil moisture content will have an impact on the physical properties of the soil in the process of freezing and thawing, thereby affecting the soil anti erosion. For the inquiry of topsoil moisture in the change process of freezing period, we used field experiment method to examine four kinds of typical upland soil surface moisture change in northeast black soil region. The results showed that 0—30 cm surface soil moisture in different areas increased larger a lot at the beginning of the freezing, the increase in cotens followed the sequence: Brown soil (Xifeng) > Albic soil (Meihekou) > Black soil(Hailun) > Dark brown soil (Zhalantun), increased by 3.1%, 2.7%, 2.5%, 0.7%. As the soil freezing process continued, the increase in contents reduced. In vertical direction, average soil water contents in 0—10 cm layer of four kinds of soils were 35.3% (Helen), 27.1% (Xifeng), 21.1% (Meihekou), 24.1% (Zalantun) which were higher than other soil layers. On slope scale, the spatial distribution pattern of soil, topography, and cultivated land application affects the amount of moisture migration to the surface. The influence of the slope aspect on surface soil moisture change is different in different areas in cold season.