The result shows that there are obvious difference in the colonization rate, density and species number of AMF when the inocula are soil from the different plant community.

结果表明：用不同植物群落的土样作为接种物，三叶草菌根侵染率和根际AMF种类和密度有很大差异，但菌根真菌种类数目较多；

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Soil available N had a significant correlation with vesicular and total colonization of AMF, its colonization rate may be probably influenced by host plants and AMF.

AM真菌泡囊定殖率和总定殖率与土壤速效N有显著负相关，其定殖强度可能主要取决于宿主植物和AM真菌的相互选择性。

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The extinction rate of plants in this area is higher than their colonization rate.

在沙漠化过程中植物种的绝灭速率大于定居速率。

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We do know that when smallpox has been introduced into populations who have not encountered the virus before, such as what happened during the colonization of the U.S., that smallpox had a much higher fatality rate, certainly exceeding 50 percent.

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