人工灌木林; 土壤水分; 分布规律; 坡面尺度; 黄土高原," /> 人工灌木林; 土壤水分; 分布规律; 坡面尺度; 黄土高原,"/> Distribution of Soil Moisture under Different Planted Shrubs on the West Loess Plateau

›› 2014, Vol. 31 ›› Issue (1): 38-43.

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Distribution of Soil Moisture under Different Planted Shrubs on the West Loess Plateau

LI Xiao-ying , DUAN Zheng-hu , CHEN Xiao-hong , TAN Ming-liang   

  1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2012-10-16 Revised:2013-01-05 Online:2014-01-15 Published:2014-02-28

Abstract: The distribution of soil moisture on slope in the western loess hilly areas was studied based on the observed data of soil moisture content under different shrubs in different habitats with neutron moisture meter. The results showed that soil moisture content was the highest on shady slope, then on semishady and semisunny slopes, and it was the lowest on sunny slope. There was a significant positive correlation between slope aspect and soil moisture storage, and the correlation between slope position and soil moisture storage was not significant. For the same slope aspect, Caragana korshinskii and Helianthemum soongoricum consumed more soil moisture than other shrubs, and the soil moisture consumption of Caragana opulens,C.roborovskyi and Lycium chinense was low. Therefore, the choice of shrubs for regenerating vegetation on different slope aspects should depend on the drought resistance of plant species. Horizontally, soil moisture content increased generally along with the increase of distance away from rhizosphere, but there was a difference of soil moisture content among different soil depth.

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