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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (17): 217-221.

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

横断山北部高山区土壤真菌群落多样性研究

邵宝林1,龚国淑2   

  • 收稿日期:2009-04-20 修回日期:2009-06-01 出版日期:2009-09-05 发布日期:2009-09-05

Diversities of Soil Fungal Communities in the Northern Alp Region of Hengduan Mountains

Shao Baolin1, Gong Guoshu2   

  • Received:2009-04-20 Revised:2009-06-01 Online:2009-09-05 Published:2009-09-05

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摘要：

采用物种丰富度（S）、 Shannon-Wiener指数（H′）、Pielou指数（E）和优势度指数(D)等指标，对横断山北部高山区土壤真菌群落多样性进行了测定。结果表明，该区域土壤真菌的物种丰度、多样性指数、均匀度指数和优势度指数分别为6.7714±2.9415、1.6956±0.4110、0.9302±0.0719、0.2290±0.1052。折多山地区土壤真菌数量最多，物种丰富度（S）和Shannon-wiener指数（H′）最高，分别达8.5000和1.8702。利用极点排序，结合垂直带的气候类型，可将横断山北部高山区土壤真菌区系划分为3个垂直生态类群：山地寒温带及高山亚寒带气候类型（海拔2900~4400m）、高山寒带气候类型（海拔4400~4600m）和高山永冻带气候类型（海拔4600~4800m）。

关键词: 西番莲, 西番莲, 无性系选

Abstract:

Amount, categories and distribution of soil fungi in the northern alp region of Hengduan Mountains were investigated, and the abundance(S), Shannon-wiener’s diversity index(H’), Pielou’s evenness(E) and dominance index(D) were calculated for community diversity of soil fungi. The results showed that the abundance(S), Shannon-wiener’s diversity(H′), Pielou’s evenness(E) and dominance index(D) were 6.7714±2.9415, 1.6956±0.4110, 0.9302±0.0719 and 0.2290±0.1052, respectively. Fungi quantity in Zheduo Mountain was the most, and the abundance(S) and Shannon-wiener’s diversity(H′) were also the most. They were 8.5000 and 1.8702, respectively. By means of Bray-Curtis Measure, soil fungi were vertically distributed from lower altitude upwards into 3 belts, i.e., mountainous region cold temperate zone and high-mountains subfrigid zone(altitude 2900~4400m)，high-mountains frigid zone(altitude 4400~4600m), and high-mountains frozen zone(altitude 4600~4800m).