| 生物土壤与生态 |
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| Nest Building Activities and Effect of Formica cunicularia on Soil Properties on Mobile Dune of Horqin Sandy Land |
| LIU Ren-tao, ZHAO Ha-lin, ZHAO Xue-yong, ZHANG Tong-hui, YUN Jian-ying, QU Hao |
| Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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Abstract Through the investigation into distribution of diameter, density and cover of ant mound on mobile dune of Horqin sandy land, the effects of microrelief on nest building activities of Formica cunicularia and the activities on soil properties were analyzed in this paper. The main results were as follows: the distribution of diameter, density and cover of ant mound differed remarkably on ridge, mesoslope, and downslope of the windward and leeward slopes. The diameter of ant mound on mesoslope of windward slope was smaller, and the order of density and cover was ridge>mesoslope>downslope. On the other hand, the nest building activities changed the soil properties: the soil water content, electric conductivity, organic matter and total N increased while pH decreased; in terms of microrelief, the ant mounds on the downslope of windward slope had higher water content, that on the downslope of leeward slope had higher organic matter, and that on ridge had lower pH and electronic conductivity. The variance of micro-habitat of different slopes had important effect on the nest building activities, but the correlation between microrelief and distribution of ant mound was not obvious as a whole (P>0.05).
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Received: 17 November 2008
Published: 20 January 2010
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2010, Vol. 30 
