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Citation:

Soil Water Redistribution Pattern of Caragana intermedia Hedgerow System in Semi-arid Area

  • Received Date: 2013-04-27
  • The soil moisture contents at four locations (inter-band, front-band, inner-band and behind-band) of Caragana intermedia hedgerow system which was located in the hilly area of Loess Plateau were measured for 2 years. The results indicated that there were obvious differences in soil water physical properties among locations. The soil bulk density(0.99 g·cm-3), non-capillary porosity(8.77%) and capillary moisture capacity(58.89 %) of inner-band were better than the other parts of the system with looser soil and higher soil water permeability and water retention. The soil of front-band was stickier than that of the others. The soil moisture content of each position decreased by the order 0-20 cm (25.51%±2.28%) > 40-60 cm (12.96%±1.34%) > 60-80 cm (10.03%±0.59%) > 80-100 cm (9.16%±0.81%) > 100-120 cm (8.76%±1.00%) with depths, for the surface layer, the soil moisture contents of the front-band and inner-band were higher than that of the others. The profile of soil moisture of hedgerow system were divided into three layers based on the orderly cluster analysis of soil moisture, namely, weak moisture utilizing layer, moisture utilizing layer, and moisture regulating layer. The depth of moisture utilizing layer of inner-band soil (20-120 cm) was greater than that of front-band, behind-band (20-60 cm) and inter-band (40-60 cm), similarly, the moisture regulating layer of inner-band soil (below 120 cm) was deeper than that of inter-band (below 80 cm), front-band (below 60 cm) and behind-band (below 60 cm), too, which reflected the effects of runoff intercepting, enriching soil moisture to the inner-band, high infiltration and reservoir of hedgerow system.
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Soil Water Redistribution Pattern of Caragana intermedia Hedgerow System in Semi-arid Area

  • 1. China National Bamboo Research and Development Center, Chinese Academy of Forestry, Hangzhou 310012, Zhejiang, China
  • 2. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China

Abstract: The soil moisture contents at four locations (inter-band, front-band, inner-band and behind-band) of Caragana intermedia hedgerow system which was located in the hilly area of Loess Plateau were measured for 2 years. The results indicated that there were obvious differences in soil water physical properties among locations. The soil bulk density(0.99 g·cm-3), non-capillary porosity(8.77%) and capillary moisture capacity(58.89 %) of inner-band were better than the other parts of the system with looser soil and higher soil water permeability and water retention. The soil of front-band was stickier than that of the others. The soil moisture content of each position decreased by the order 0-20 cm (25.51%±2.28%) > 40-60 cm (12.96%±1.34%) > 60-80 cm (10.03%±0.59%) > 80-100 cm (9.16%±0.81%) > 100-120 cm (8.76%±1.00%) with depths, for the surface layer, the soil moisture contents of the front-band and inner-band were higher than that of the others. The profile of soil moisture of hedgerow system were divided into three layers based on the orderly cluster analysis of soil moisture, namely, weak moisture utilizing layer, moisture utilizing layer, and moisture regulating layer. The depth of moisture utilizing layer of inner-band soil (20-120 cm) was greater than that of front-band, behind-band (20-60 cm) and inter-band (40-60 cm), similarly, the moisture regulating layer of inner-band soil (below 120 cm) was deeper than that of inter-band (below 80 cm), front-band (below 60 cm) and behind-band (below 60 cm), too, which reflected the effects of runoff intercepting, enriching soil moisture to the inner-band, high infiltration and reservoir of hedgerow system.

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