[1]DU Kang,ZHANG Beiying.Characteristics of Soil Moisture Variation in Different Types of Land Uses in the Loess Hilly Region[J].Research of Soil and Water Conservation,2020,27(06):72-76.
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Characteristics of Soil Moisture Variation in Different Types of Land Uses in the Loess Hilly Region
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
72-76
Column:
目次
Public date:
2020-10-20
- Title:
- Characteristics of Soil Moisture Variation in Different Types of Land Uses in the Loess Hilly Region
- Keywords:
- soil moisture; land use type; soil water content; loess hilly region
- CLC:
- S152.7
- DOI:
- -
- Abstract:
- In order to explore the temporal and spatial dynamics of soil moisture in different types of land use in the loess hilly region, plan land use type and soil water resources reasonably, four land use types(terrace, grassland, Robinia pseudoacacia forest, Hippophae rhamnoides scrubland)in Dunshan Mountain, Ansai County of Yan'an City, Shaanxi Province were selected. Soil moisture was monitored in May, July, August and October of 2019 by soil drilling method. The results showed that: the soil water contents of the four land use patterns presented the obvious temporal characteristics, and there was lag effect; the average soil water contents of 0—300 cm depth decreased in the order: terrace>grassland>Hippophae rhamnoides scrubland> Robinia pseudoacacia forest; with the increase of soil depth, the seasonal variation coefficient of soil moisture decreased gradually, and the soil depth with the seasonal variation less than 100 cm tended to be stable; the soil moisture content was S-shaped from the surface soil layer to the deep soil layer; the water content first increased and then decreased, and the vertical change characteristics were obvious. The similarity of soil water change decreased in the order of: terrace> Hippophae rhamnoides scrubland>grassland>Robinia pseudoacacia forest; Robinia pseudoacacia forest and Hippophae rhamnoides shrub consumed more deep soil water, which was prone to soil drying; terrace and grassland had better soil water conditions, terrace had a good control effect on soil moisture, and soil moisture changed gently in the vertical direction.
- References:
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Last Update:
2020-10-20