| Ecological research on Arbuscular mycorrhizal fungi from the rhizosphere of Hedysarum scoparium in MuUs sandland |
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| DOI：10.7606/j.issn.1000-7601.2008.05.47 |
| Key Words: AM fungi soil enzyme spatial-temporal distribution Hedysarum scoparium |
| Author Name | Affiliation | | DUAN Xiaoyuan | College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China | | HE Xueli | College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
College of Life Sciences, Hebei University, Baoding, Hebei 071002, China |
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| Abstract: |
| The samples of soil and root in the rhizospheres of the Hedysarum scoparium were collected from the Ordos Sandland and Grassland Ecological Institute in May、August and October 2007. The spatial-temporal distribution of AMF and its relation to soil factors were investigated and analyzed. The result showed that a good symbioses relation is formed between AM fungi and Hedysarum scoparium. Mycorrhizal type is intermediate type; The spore density of AMF has a decreasing change with the increase of the depth of soil samples, and the highest spore density occurs in 0～10 cm soil layer in October, and the highest percentage of colonization occurs in 10～20 cm soil layer in October; The Spore density has a significantly positive correlation with vesicular colonization rate; soil organic matter, alkali solution N and urease activity have a significantly positive correlation with Spore density, moreover they are positively correlated with vesicular colonization rate, total and hypha colonization rate; pH has a significantly negative effect on the arbuscular colonization rate, total and hypha colonization rate; Protease activity has a significantly positive affected on the arbuscular colonization rate. The relations between AMF and soil factors prove the diverse colonization of different structures of AMF and the spore density can be used as effective evaluations for sandland soil environment. |
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