生物多样性 ›› 2021, Vol. 29 ›› Issue (1): 0-0.DOI: 10.17520/biods.2020050

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甘肃省祁连山国家级自然保护区的黏菌物种多样性

魏鑫磊,李姝,窦文俊,亓宝,王琦,李玉   

  1. 吉林农业大学食药用菌教育部工程研究中心
  • 收稿日期:2020-02-20 修回日期:2020-05-11 出版日期:2021-01-20 发布日期:2020-07-15
  • 通讯作者: 王琦
  • 基金资助:

     国家自然科学基金(31770011)、重点生态保护修复治理专项资金(张山水湖办【2018】20号)、甘肃省引导科技创新发展专项资金(2017zx-10)

Species diversity of myxomycetes in Qilian Mountain National Nature Reserve, Gansu

Xinlei Wei, Shu Li, Wenjun Dou, Bao Qi, Qi Wang*, Yu Li   

  1. Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University

  • Received:2020-02-20 Revised:2020-05-11 Online:2021-01-20 Published:2020-07-15
  • Contact: Qi Wang

摘要: 黏菌是森林生态系统中不可或缺的生物资源,在生态系统中发挥重要的作用。为了探讨黏菌在西北地区森林中的物种多样性及影响物种组成和多样性的因素,本文对甘肃省祁连山国家级自然保护区进行连续两年多点调查采样,获得黏菌标本826份,经形态学鉴定属于4目5科22属71种,其中甘肃省新记录种30种。通过物种相似性分析,发现鹅绒菌(Ceratiomyxa fruticulosa)等9个物种是祁连山保护区的广泛分布物种,针叶林中的黏菌总物种数(58种)和特有物种数(38种)均高于阔叶林(33种;13种),未发现海拔高度对黏菌多样性存在明显影响。主成分分析结果说明,腐木型基质上发生的黏菌物种多样性最丰富,木本基物与草本基物上的黏菌发生物种具有明显差异。研究结果表明,甘肃省祁连山保护区的山地森林带的植被类型与基物类型是影响黏菌物种组成和多样性的重要因素。

关键词: 黏菌, 分类学, 物种多样性, 森林生态系统, 分布特征

Abstract: As indispensable biological resource, myxomycetes play an important role in the forest ecosystem. In order to explore the diversity of myxomycetes and the factors affecting the species composition and diversity in the forests of Northwest China, continuously two years' investigations were carried out in Qilian Mountain National Nature Reserve of Gansu province. Totally 826 specimens were collected and identified as 4 orders, 5 families, 22 genera, and 71 species by morphological characters, and 30 species were new records in Gansu province. According to species similarity analysis, 9 species including Ceratiomyxa fruticulosa were widely distributed in the natural reserve. The total number of myxomycetes (58 species) and endemic myxomycetes (38 species) in coniferous forest were higher than those in broad-leaved forest (33 species and 13 species). There was not found any obvious effect of altitude on diversity. The principal component analysis showed that the species diversity occurring on the rotten wood substrate is the most abundant, and the myxomycetes species occurring on the woody and herbaceous substrates were significantly different. This results suggests that the vegetation type and substrate type of the mountain forest are important factors affecting the species composition and diversity of myxomycetes in Qilian Mountain Natural Reserve of Gansu province.

Key words: Myxomycetes, taxonomy, species diversity, forest ecosystem, distribution characteristics