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| Titel |
Analysis of soil moisture condition under different land uses in the arid region of Horqin sandy land, northern China |
| VerfasserIn |
C. Y. Niu, A. Musa, Y. Liu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 6, no. 4 ; Nr. 6, no. 4 (2015-10-23), S.1157-1167 |
| Datensatznummer |
250115519
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| Publikation (Nr.) |
 copernicus.org/se-6-1157-2015.pdf |
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| Zusammenfassung |
| Land use plays an important role in controlling spatial and temporal
variations of soil moisture by influencing infiltration rates, runoff and
evapotranspiration, which is important to crop growth and
vegetation restoration in semiarid environments, such as Horqin sandy land in north China. However, few studies have been conducted comparing
differences of dynamics of soil water conditions and the responses of soil
to infiltration under different land use types in semiarid area. Five
different land use types were selected to analyze soil moisture variations
in relation to land use patterns during the growing season of 2 years.
Results showed that soil moisture condition was affected by different land
uses in semi-arid sandy soils. The higher soil moisture content among
different land uses was exhibited by the grassland, followed by
cropland, poplar land, inter-dunes and shrub land. The temporal variations
of soil moisture in different land uses were not always consistent with the
rainfall due to the dry sequence. Moreover, soil water at the surface, in the root zone
and at the deep soil layer indicated statistical differences for different types of land
cover. Meanwhile, temporal variations of soil moisture profile changed with
precipitation. However, in the deep soil layer, there was a clear lag in
response to precipitation. In addition, seasonal variations of profile soil
moisture were classified into two types: increasing and waving types. And
the stable soil water layer was at 80–120 cm. Furthermore, the infiltration
depth exhibited a positive correlation with precipitation under all land
uses. This study provided an insight into the implications for land and
agricultural water management in this area. |
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