植物生态学报 ›› 2020, Vol. 44 ›› Issue (8): 842-853.DOI: 10.17521/cjpe.2019.0327

• 研究论文 • 上一篇    下一篇

色季拉山不同腐解等级华山松倒木上的苔藓植物组合

刘凌1, 樊英杰1, 宋晓彤1, 李敏2, 邵小明1, 王晓蕊3,*()   

  1. 1中国农业大学资源与环境学院, 生物多样性与有机农业北京市重点实验室, 北京 100193
    2河北师范大学生命科学学院, 石家庄 050024
    3石家庄学院资源与环境科学学院, 石家庄 050035
  • 收稿日期:2019-11-25 接受日期:2020-04-27 出版日期:2020-08-20 发布日期:2020-06-12
  • 通讯作者: 王晓蕊
  • 作者简介:* wxr_wxr@126.com
  • 基金资助:
    国家自然科学基金(41771054);国家自然科学基金(31570474);河北省自然科学基金(D2019106006)

Bryophyte societies on the fallen logs of Pinus armandii with different decay classes in Sygera Mountains

LIU Ling1, FAN Ying-Jie1, SONG Xiao-Tong1, LI Min2, SHAO Xiao-Ming1, WANG Xiao-Rui3,*()   

  1. 1College of Resources and Environmental Sciences, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China
    2College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
    3College of Resources and Environmental Science, Shijiazhuang University, Shijiazhuang 050035, China
  • Received:2019-11-25 Accepted:2020-04-27 Online:2020-08-20 Published:2020-06-12
  • Contact: WANG Xiao-Rui
  • Supported by:
    National Natural Science Foundation of China(41771054);National Natural Science Foundation of China(31570474);Natural Science Foundation of Hebei Province(D2019106006)

摘要:

倒木是森林生态系统维持健康和更新的重要组成部分, 在倒木不同腐解阶段, 倒木上定植的苔藓植物组合的差异尚不清楚。为深入探讨倒木上苔藓植物组合变化规律及其影响因素, 该文对西藏色季拉山同一地点不同腐解程度的4株华山松(Pinus armandii)倒木上的苔藓植物进行了样方调查和数据分析。结果表明: 4株倒木上40个样方共有苔藓植物22科52种, 其中藓类13科38种, 苔类9科14种; 以恒有优势种为特征进行划分, 共得到14个物种组合。随着倒木腐解程度加大以及周围环境的不断改变, 生长其上的苔藓植物物种多样性逐渐增加, 但组合数量和苔藓总盖度却呈现先增大后减小的趋势。苔藓物种由耐旱性强的丛生型藓类, 如木灵藓科、白发藓科, 逐渐演替为喜阴湿环境、快速生长的垫状或毯状藓类, 如提灯藓科、羽藓科和青藓科。倒木苔藓植物组合空间结构复杂程度逐渐增大。倒木是多种苔藓植物选择的重要生长基质, 其上苔藓植物受倒木的腐解程度、水分和光照等条件的影响而发生相应的物种组合变化。

关键词: 苔藓植物, 倒木, 生活型, 物种多样性, 环境因子

Abstract:

Aims Fallen logs play important roles in maintaining the health and the renewal of forest ecosystems, but the difference of bryophyte societies on fallen logs with different decay classes is unclear.
Methods To understand the regularity and influencing factors of changes in bryophyte societies, we investigated the bryophytes with quadrats along the trunks on four fallen logs of Pinus armandii with different decay classes at the same site in Sygera Mountains, Xizang. Then, the measured data were collected and analyzed.
Important findings There were 22 families and 52 species of bryophytes inhabiting the four fallen logs, including 13 families and 38 species of Musci, 9 families and 14 species of Hepaticae. According to the characteristics of the shared dominant species, 14 societies were obtained. With the increase of decay classes of fallen logs and changes in surrounding environment, the bryophyte diversity increased gradually, while the number of societies and the total bryophyte coverage fluctuated. Bryophyte species varied from drought-tolerant tall turfs, such as Orthotrichaceae and Leucobryaceae, to fast-growing cushions or mats in humid and shady environments, such as Mniaceae, Thuidiaceae and Brachytheciaceae. The complexity of spatial structure of bryophytic society increased gradually. Fallen logs are important growth substrates for a variety of bryophytes. Bryophyte societies on fallen logs vary with decay classes, moisture and light conditions.

Key words: bryophyte, fallen log, life form, biodiversity, environmental factor