| 生物土壤与生态 |
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| Change of Nutrient and Energy in Process of Fine Roots Decomposition of Sabina vulgaris and Artemisia ordosica in Mu Us Sandland |
| QIN Yan1, HU Yong-ning2,3, WANG Lin-he2, NA Ri-su1, ZHANG Guo-sheng2 |
| 1.Grassland Research Institute, Chinese Academy of Agricultural Sciences, Hohhot 010010, China;2.College of Ecology and Environment Science, Inner Mongolia Agricultural University, Hohhot 010019, China; 3.Inner Mongolia Design Institute of Forestry Survey and Design, Hohhot 010018, China |
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Abstract The study on the fine roots decomposition of Sabina vulgaris and Artemisia ordosica in MU US Sandland was made by the means of a buried bag experiment. The experiment data of two-year showed that during the process of fine roots decomposition of Sabina vulgaris and Artemisia ordosica, C, P, K and Mg were released, and the release rate of S. vulgaris was bigger than A. ordosica; The loss rate of element weight showed a sequence of K＞P＞C＞Mg; There was an accumulation of N during the process of fine roots decomposition of S. vulgaris and a release for A. ordosica; There was an accumulation of Ca during the process of fine roots decomposition of S. vulgaris and A. ordosica, and the accumulation rate of A. ordosica was bigger than S. vulgaris; The energy was released in the process of fine roots decomposition of S. vulgaris and A. ordosica. The study provided a theoretical basis for the energy transformation and flow of the soil pool in sandy area.
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Received: 19 October 2009
Published: 20 November 2010
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2010, Vol. 30 
