欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2019, Vol. 30 ›› Issue (2): 637-643.doi: 10.13287/j.1001-9332.201902.035

• 研究论文 • 上一篇    下一篇

烟气对泥炭藓孢子萌发影响的模拟研究

康媛1,2,3,白晓珊1,2,卜兆君1,2,3*,冯璐1,2,4,郭红梅1,2,3,杨云荷1,2,3,李亮1,2   

  1. 1东北师范大学地理科学学院泥炭沼泽研究所, 长春 130024;
    2国家环境保护湿地生态与植被恢复重点实验室, 长春 130024;
    3长白山湿地生态过程与环境变化吉林省重点实验室, 长春 130024;
    4滨州学院山东省黄河三角洲生态环境重点实验室, 山东滨州 256603
  • 收稿日期:2018-09-08 修回日期:2018-11-27 出版日期:2019-02-20 发布日期:2019-02-20
  • 通讯作者: E-mail:buzhaojun@nenu.edu.cn
  • 作者简介:康媛,女,1997年生,本科生.主要从事自然地理学与湿地生态学研究.E-mail:kangy262@nenu.edu.cn.
  • 基金资助:
    本文由国家自然科学基金项目(41871046, 41471043, 41371103)、国家重点研发计划项目(2016YFC0500407)和国家级大学生创新创业训练计划项目(201710200059)资助

Simulated study on the effects of smoke on Sphagnum spore germination.

KANG Yuan1,2,3, BAI Xiao-shan1,2, BU Zhao-jun1,2,3*, FENG Lu1,2,4, GUO Hong-mei1,2,3, YANG Yun-he1,2,3, LI Liang1,2   

  1. 1Institute of Peat and Mire, School of Geographical Sciences, Northeast Normal University, Changchun 130024, China;
    2State Environmental Protection Key Laboratory for Wetland Ecology and Vegetation Restoration, Changchun 130024, China;
    3Jilin Provincial Key Laboratory for Wetland Ecological Processes and Environmental Change in the Changbai Mountains, Changchun 130024, China;
    4Shandong Provincial Key Laboratory of Eco-EnvironmentalScience for the Yellow River Delta, Binzhou University, Binzhou 256603, Shandong, China
  • Received:2018-09-08 Revised:2018-11-27 Online:2019-02-20 Published:2019-02-20
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (41871046, 41471043, 41371103), the National Key R&D Program (2016YFC0500407) and the National Undergraduate Training Program for Innovation and Entrepreneurship (201710200059).

摘要: 适量烟气能促进种子萌发,但对苔藓植物孢子的作用尚不清楚.选取采自长白山区泥炭地的粗叶泥炭藓和中位泥炭藓的孢蒴为试验材料,通过燃烧泥炭地植物产生烟气,制备烟溶液,分别与不同大小(大:直径为2.10~2.50 mm;小:直径为1.50~1.90 mm)以及不同保存时长(旧:4.3和6.3年;新:0.3年)的孢蒴进行两组双因素试验,经不同时长的烟溶液浸泡和萌发试验,模拟研究烟气、孢蒴大小和保存时长对苔藓植物孢子萌发的影响.结果表明: 烟溶液浸泡影响孢子萌发,培养10 d时,不同时长的烟溶液浸泡均可使孢子的萌发率提高5倍以上,小孢蒴孢子的萌发率高;培养21 d时,仅适度浸泡(3 d)表现出促进萌发的作用,孢蒴大小对孢子萌发率无影响;烟溶液浸泡对长时间保存(4.3和6.3年)的孢蒴孢子萌发无促进作用.研究表明,适量烟气可加速新泥炭藓孢子以及小孢蒴孢子的萌发.在存在不定期火烧干扰的泥炭地中,与对种子植物的作用类似,烟气可能在苔藓植物种群的有性更新和种群维持中发挥重要作用.

关键词: 火, 有性更新, 泥炭地, 烟气, 孢子库

Abstract: Moderate smoke could facilitate seed germination, but its effects on bryophyte spore germination is still unknown. Here, we analyzed the effects of smoke, capsule size and storage time on the spore germination of Sphagnum squarrosum and S. magellanicum, with the capsules of which being collected from two peatlands of the Changbai Mountains. The smoke solution prepared by burning peatland plants was combined with the capsules with different sizes (large, 2.10-2.50 mm in diameter; small, 1.50-1.90 mm in diameter) and storage time (old, being stored for 4.3 or 6.3 a; new, being stored for 0.3 a) to conduct a factorial experiment. The spores were soaked with smoke solution for different durations and then cultured for germination. The results showed that smoke solution affected spore germination. After 10 d cultivation, germination rate of spores soaking with smoke solution for all duration was increased by more than 5-fold, with the small spores having higher germination rate. After 21 d cultivation, the facilitative effect was only observed in moderate soaking (3 d), and spore size showed no effect on germination. Smoke solution could not increase the germination of spores from the capsules with long storage time (4.3 and 6.3 a). Our results indicated that moderate smoke solution soaking might accelerate germination of Sphagnum spores including small pores. In the ecosystems with casual fire disturbance such as peatlands, similar with its effects on the seed plants, smoke might play a key role in the regeneration and persistence of bryophyte population.

Key words: peatland, sexual regeneration, fire, smoke, spore bank