| Effects of land use patterns on soil physical and chemical properties in the Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2022.04.25 |
| Key Words: Loess Plateau land use patterns soil physical and chemical properties |
| Author Name | Affiliation | | BAI Chenyun | Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China
University of Chinese Academy of sciences, Beijing 10049, China | | TIAN Hanyang | Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China
University of Chinese Academy of sciences, Beijing 10049, China | | QIAO Jiangbo | Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Northwest A&F University, Yangling,Shaanxi 712100, China | | HAN Xiaoyang | Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Northwest A&F University, Yangling,Shaanxi 712100, China | | ZHU Yuanjun | Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China
University of Chinese Academy of sciences, Beijing 10049, China
Institute of Soil and Water Conservation, Northwest A&F University, Yangling,Shaanxi 712100, China |
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| Abstract: |
| To understand the impact of land use patterns on soil physical and chemical properties, the principal physical and chemical properties of 0~500 cm soil under four typical land uses in Changwu, Shaanxi Province were measured and analyzed. The results showed that the contents of soil organic matter and total nitrogen in farmland and orchard were significantly higher than those in the wasteland and black locust forest lands. The content of soil clay was significantly negatively correlated with soil bulk density and positively correlated with soil saturated hydraulic conductivity. The bulk density of 0~100 cm soil in farmland was 1.44 g·cm-3, which was significantly higher than that in the wasteland (1.27 g·cm-3), orchard (1.38 g·cm-3) and black locust lands (1.32 g·cm-3). The soil water content of 400~500 cm showed an order of black locust forest (86 g·kg-1) < orchard (113g·kg-1) < wasteland (152 g·kg-1) < farmland (165 g·kg-1). The average saturated hydraulic conductivity for the 0~500 cm soils inorchard and black locust land were 0.37 mm·min-1 and 0.36 mm·min-1, respectively, which were significantly higher than that in farmland (0.25 mm·min-1) and wasteland (0.23 mm·min-1). The implementation of grain for green project led to the decrease of soil bulk density and the increase of saturated hydraulic conductivity, which benefiting precipitation infiltration, but the deep soil had a trend of being dry after the implementation. |
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