The correlation between soil physical and chemical properties and soil microbes in different types of Nitraria dune

doi:10.11686/cyxb2014315

Abstract

Abstract: In order to explore soil-forming processes and to provide basic data for oasis ecological construction, a study has been undertaken that correlates soil microbes with soil physical and chemical properties in different Nitraria sand dunes in the oasis-desert ecotone of Minqin. Results showed significant differences in soil clay, silt, fine sand and coarse sand content among fixed, semi-fixed and flowing sand dunes. Soil nutrients showed a positive correlation with soil clay, silt and fine sand. However, they were negatively correlated with coarse sand. Correlations decreased with increasing soil particle size. The quantity of soil microbes in semi-fixed sand dunes was clearly higher than in fixed and flowing sand dunes. The ecotone exhibits alkaline soils. The older the sand dune the greater the content of organic matter, total nitrogen, total phosphorus, total potassium, hydrolytic nitrogen, potassium, available phosphorus and CaCO₃. In addition, soil microbes were significantly correlated with the physical and chemical properties of different ages of sand dune, especially bacteria and actinomycetes, which showed a prominent negative correlation with pH value. Soil organic matter had a significant positive correlation with the quantity of these microbes.

XI Jun-Qiang, YANG Zi-Hui, GUO Shu-Jiang, WANG Qiang-Qiang, ZHANG Jian-Hui, WANG Duo-Ze. The correlation between soil physical and chemical properties and soil microbes in different types of Nitraria dune[J]. Acta Prataculturae Sinica, 2015, 24(6): 64-74.

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