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新疆北部小孢发属地衣初步研究

A Preliminary Study of the Bryoria Lichens in Northern Xinjiang

    摘要
  • 摘要: 新疆北部山脉生态环境多样,是地衣生长分布的理想区域。作者根据多年的实地调查和前人研究资料,对新疆北部小孢发属(Bryoria Brodo&D.Hawksw.)地衣的种类及其分布、地理成分和垂直分布进行了初步研究。结果表明,分布在新疆北部的小孢发属地衣共有10种,它们分别是钢灰小孢发B.chalybeiformis(L.)Brodo&D.Hawksw.、刺小孢发B.confusa(D.D.Awasthi)Brodo&D.Hawksw.、叉小孢发B.furcellata(Fr.)Brodo&D.Hawksw.、暗褐小孢发B.fuscescens(Gyeln.)Brodo&D.Hawksw.、绵毛小孢发B.lanestris(Ach.)Brodo&D.Hawksw.、B.nadvornikiana(Gyeln.)Brodo&D.Hawksw.、光亮小孢发B.nitidula(Th.Fr.)Brodo&D.Hawksw.、假暗褐小孢发B.pseudofuscescens(Gyeln.)Brodo&D.Hawksw.、单一小孢发B.simplicior(Vain.)Brodo&D.Hawksw.及毛状小孢发原亚种B.trichodesssp.trichodes(Michx.)Brodo&D.Hawksw.等,主要分布在天山和阿勒泰山。新疆北部小孢发属地衣可划分为3种地理成分:(1)环北极-高山种Bryoria chalybeiformis、B.nitidula、B.furcellata;(2)环低北极及北方种B.simplicior;(3)环北方种B.fuscescens、B.lanestris、B.nadvornikiana、B.pseudofuscescens。阿勒泰山和天山的小孢发属地衣具明显的垂直分布差异。

     

    Abstract: The species diversity,geographical elements,and vertical distribution of the lichen genus Bryoria Brodo & D.Hawksw.from Tianshan and Altay Mountains in Northern Xinjiang were addressed.Nine species,B.chalybeiformis(L.)Brodo & D.Hawksw.,B.confusa(D.D.Awasthi)Brodo & D.Hawksw.,B.furcellata(Fr.)Brodo & D.Hawksw.,B.fuscescens(Gyeln.)Brodo & D.Hawksw.,B.lanestris(Ach.)Brodo & D.Hawksw.,B.nadvornikiana(Gyeln.)Brodo & D.Hawksw.,B.nitidula(Th. Fr.)Brodo & D.Hawksw.,B.pseudofuscescens(Gyeln.)Brodo & D.Hawksw.,B.simplicior(Vain.)Brodo & D.Hawksw.,and one subspecies B.trichodes ssp.trichodes(Michx.)Brodo & D.Hawksw.were listed in the lichen flora of Xinjiang.They were classified into three geographical elements,(1)Circumpolar arctic and high mountain species;(2)Circumpolar low arctic and boreal species;(3)Circumpolar boreal species.The vertical distribution characteristics of Bryoria lichens in Altay and Tianshan Mountains were analyzed.

     

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