Spatial Variability of Infiltration Rate in the Semiarid Loess Hilly and Gully Area
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    Abstract:

    In the semiarid loess hilly and gully area of Southern Ningxia Hui Autonomous Region, the small watershed of Zhongzhuang in Pengyang County was chosen in view of the management effects of soil and water conservation.By using a light rainfall simulator and double-ring infiltrometers, infiltration rate was measured in the spots with different ecological restoration and reconstruction measures ( level trench, scale pit, level terraced field, artificial forage grass, and natural pasture) and different landforms ( slope aspect, slope position, and slope grade) in the whole watershed.Results show that infiltration rate presents the dis- tinct vertical variation along slope.With slope degree increasing, steady-state infiltrating rate increases.Steady-state infiltration rate on shady slope is higher than that on sunny slope, but its initial rate is smaller than that on sunny slope.The influence of slope position on steady-state infiltration rate is that steady-state infiltration rate is gradually increased from the upper slope down to the bottom slope.For different landuse manners, infiltration rates also have significant differences.

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王月玲,蒋齐,蔡进军,张源润,季波,董立国,李生宝.半干旱黄土丘陵区土壤水分入渗速率的空间变异性[J].水土保持通报英文版,2008,(4):52-55,74

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History
  • Received:January 12,2008
  • Revised:February 06,2008
  • Adopted:
  • Online: November 26,2014
  • Published: