a State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China.
Can J Microbiol. 2014 Dec;60(12):811-8. doi: 10.1139/cjm-2014-0416.
Elevational patterns of plant and animal diversity have been studied for centuries; however, the effects of land elevation on arbuscular mycorrhizal (AM) fungal diversity remains unclear. We examined AM fungal diversity and distribution along 19 elevation belts in Mount Taibai of the Qinling Mountains, with the aim to assess the altitudinal diversity patterns. In total, 63 AM fungal taxa belonging to 12 genera were discovered. Mycorrhizal colonization rates on roots; AM fungal spore density; and fungal species richness, evenness, and diversity had different patterns in terms of the changes of elevation. Root colonization followed a cubical parabolic pattern, with a peak and a foot at an elevation of about 2000 and 3000 m above sea level, respectively. Species richness decreased monotonically from the lowest to the highest elevations. Spore density and α-diversity exhibited a unimodal pattern and peaked at an elevation of 2107 and 1350 m, respectively. Species evenness increased monotonically at an elevation of between 1050 and 2250 m. β-Diversity also presented a basically incremental pattern along altitudinal gradients. Our findings suggest that elevation changes were the main factor governing the patterns of AM fungal diversity.
植物和动物多样性的海拔分布模式已经研究了几个世纪；然而，土地海拔高度对丛枝菌根（AM）真菌多样性的影响仍不清楚。我们在秦岭太白山的 19 个海拔带上研究了 AM 真菌多样性及其分布，目的是评估海拔多样性模式。总共发现了 63 种属于 12 属的 AM 真菌类群。根的菌根定殖率、AM 真菌孢子密度以及真菌物种丰富度、均匀度和多样性随着海拔的变化呈现出不同的模式。根系定殖遵循三次抛物线模式，在海拔约 2000 米和 3000 米处分别出现峰值和低谷。物种丰富度从最低海拔到最高海拔呈单调递减趋势。孢子密度和α多样性呈单峰模式，分别在海拔 2107 米和 1350 米处达到峰值。物种均匀度在海拔 1050 米至 2250 米之间呈单调递增趋势。β多样性也沿着海拔梯度呈现出基本递增的模式。我们的研究结果表明，海拔变化是控制 AM 真菌多样性模式的主要因素。
