| 黄土丘陵沟壑区丛枝菌根真菌多样性及其分布 |
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| 引用本文： | 李登武,薛玲,张万红.黄土丘陵沟壑区丛枝菌根真菌多样性及其分布[J].林业科学,2011,47(7). |
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| 作者姓名： | 李登武 薛玲 张万红 |
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| 作者单位： | 1. 西北农林科技大学林学院 杨凌712100
2. 中国科学院水利部水土保持研究所 杨凌712100 |
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| 基金项目： | 国家自然科学基金项目(30671672); 西北农林科技大学青年科学基金专项 |
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| 摘 要： | 在黄土丘陵沟壑区由撂荒到灌丛的植被恢复过程中,研究阴、阳坡植被不同恢复阶段代表植物的AM真菌侵染状况、根际土壤中AM真菌孢子的密度以及AM真菌多样性及分布。结果表明:从不同恢复阶段植被中,共分离到18种AM真菌,隶属于巨囊霉属、盾巨囊霉属和球囊霉属,其中,缩球囊霉和地球囊霉2种为不同恢复阶段中的共有种,即为本区的优势种,其余的16种在各恢复阶段中的分布有所差异。在阳坡半阳坡的植被不同恢复阶段中,各宿主植物的平均侵染率,仅第1,2阶段差异显著,根际土壤的孢子密度在各阶段差异不显著;而阴坡半阴坡的AM真菌的侵染率则差异不显著,根际的孢子密度,以第4,5阶段的孢子密度显著高于第1,2阶段。对于AM真菌物种丰度和多样性在阴、阳坡则呈现相似的规律,即第4,5阶段较高,第1,2和第3阶段则相对较低。对AM真菌物种均匀度而言,阳坡半阳坡的第5阶段与第2,3,4阶段的差异显著,阴坡半阴坡上则差异不显著。
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| 关 键 词： | 丛枝菌根真菌 孢子密度 侵染率 多样性 黄土丘陵沟壑区 |
Diversity and Distribution of Arbuscular Mycorrhizal(AM) Fungi in Loess Hilly Gully Region |
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| Li Dengwu,Xue Ling,Zhang Wanhong.Diversity and Distribution of Arbuscular Mycorrhizal(AM) Fungi in Loess Hilly Gully Region[J].Scientia Silvae Sinicae,2011,47(7). |
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| Authors: | Li Dengwu Xue Ling Zhang Wanhong |
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| Institution: | Li Dengwu1 Xue Ling1 Zhang Wanhong2 (1.College of Forestry,Northwest A & F University Yangling 712100,2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources Yangling 712100) |
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| Abstract: | AM fungi infection rate, spore density, diversity and distribution in the main plant species at different vegetation restoration stages in Loess Hilly Gully Region were studied. The results showed that 18 AM fungus species, belonging to Gigaspora, Scutellospora and Glomus, were identified from the rhizospheres of the main plant species. Glomus constrictum and Glomus geosporum of Glomus were the common species at different vegetation restoration stages, and they are also the dominant species in the region. D... |
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| Keywords: | arbucsular mycorrhizal fungi spore density infected frequencies diversity Loess Hilly Gully Region |
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