Land and Water Resources

Spatial Variability of Soil Moisture Content and Soil Organic Matter Content in Oasis Marginal Zone

  • ZHANG Shuai-pu ,
  • SHAO Ming-an
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  • 1. College of Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi Province, China;
    2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, Shaanxi Province, China;
    3. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

Received date: 2013-04-07

  Revised date: 2013-05-08

  Online published: 2014-09-25

Abstract

In this study, a rectangular area (1 200 m × 250 m) was delimited to carry out a case study on the spatial patterns of soil moisture and organic matter contents in oasis marginal zone in middle reaches of the Heihe River, where there are three land types, i.e. the desert, woodland and cultivated land. Spatial variations of soil moisture and organic matter contents were studied by the conventional statistical analysis. The results showed that the soil moisture and organic matter contents were increased from desert to oasis, and the average values of change extent were 9.36% and 4.92 g·kg-1 respectively. Horizontally, the soil moisture and organic matter contents in soil layer of 0-200 cm in depth were increased at first and then decreased with shifting the sample strips southward, and they were in an order of woodland > cultivated land > desert. Vertically, the variability of soil organic matter content was decreased with the increase of soil depth, but that of soil moisture content was increased in soil layer of 0-100 cm in depth and then decreased. In the oasis marginal zone, there was a significant positive correlation between soil organic matter content and soil moisture content, especially in upper soil layer. These indicated that the increase of soil organic matter content could improve the soil water storage capacity.

Cite this article

ZHANG Shuai-pu , SHAO Ming-an . Spatial Variability of Soil Moisture Content and Soil Organic Matter Content in Oasis Marginal Zone[J]. Arid Zone Research, 2014 , 31(5) : 812 -818 . DOI: 10.13866/j.azr.2014.05.05

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