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Bulletin of Botanical Research ›› 2019, Vol. 39 ›› Issue (5): 699-706.doi: 10.7525/j.issn.1673-5102.2019.05.008

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Effects of Water Table Level Increase and Sphagnum Propagule Transplantation on Vegetation Restoration

YANG Pan-Pan1,2, LIU Yu1,2, BU Zhao-Jun1,2, MA Jin-Ze3, WANG Sheng-Zhong1,2, CHEN Xu1,2, YANG Yun-He1,2   

  1. 1. State Environmental Protection Key Laboratory for Wetland Conservation and Vegetation Restoration Institute for Peat and Mire Research, Northeast Normal University, Changchun 130024;
    2. Jilin Provincial Key Laboratory for Wetland Ecological Processes and Environmental Change in the Changbai Mountains, Changchun 130024;
    3. College of Geography and Environment Engineering, Gannan Normal University, Ganzhou 341000
  • Received:2019-03-05 Online:2019-09-05 Published:2019-07-16
  • Supported by:
    National Key Research Program of China(2016YFC0500407);National Natural Science Foundation of China(41871046,41471043);The Leading Young and Middle-aged Talent and Team in Science and Technology Innovation Foundation of Jilin Province(20190101025JH)

Abstract: Propagule transplantation of Sphagnum is one of the important factors affecting restoration of peatland vegetation, but the effect of transplantation modes on restoration success has lack of comparative research. The degraded peatland of Baijianghe in Changbai Mountains area was selected as the research site, and a hollow species S.flexuosum and a hummock species S.magellanicum(the latter with strong relatively drought tolerance) collected from natural habitats were chosen as experimental materials. We tried to study the effect of water table level increase and different transplant modes of Sphagnum propagule on vegetation restoration of the degraded peatland by field transplant experiment. Our data analyses showed that water table level significantly affected the establishment of S.flexuosum and S.magellanicum, and their cover increased obviously with water table level increase; transplantation mode had no effect on establishment of both Sphagnum after one month, but did have on that of S.flexusoum after two months meanwhile S.flexusoum gained greatest cover when it being transplanted first and covered by drought-tolerance species S.magellanicum; no interaction between water table level and transplantation mode was observed, namely the transplantation mode in which S.flexusoum was covered by S.magellanicum did not facilitate S.flexusoum establishment. Therefore, water table level increase is a very effective means of vegetation restoration in degraded peatlands and reasonable transplantation mode will promote restoration efficiency due to species-specific drought tolerance.

Key words: peatland, vegetation restoration, Sphagnum, water table level, propagule transplantation

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