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Chinese Journal of Applied Ecology ›› 2018, Vol. 29 ›› Issue (3): 687-695.doi: 10.13287/j.1001-9332.201803.010

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Effects of simulated warming and functional group removal on survival and growth of Abies faxoniana seedlings.

PANG Xiao-yu1,2, YUAN Xiu-jin3, WANG Ao4, LI Mai-he5, 6, LIU Xing-liang7, PAN Hong-li7, YU Fei-hai4, LEI Jing-pin1,2*   

  1. 1State Forestry Administration Key Laboratory of Forest Silviculture, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;
    2Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China;
    3State Forestry Administration Key Laboratory of Forest Ecology and Environment, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;
    4School of Nature Conservation, Beijing Forestry University, Beijing 100083, China;
    5Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    6Swiss Federal Research Institute WSL, Zuercherstrasse 111, CH-8903 Birmensdorf, Switzerland;
    7Sichuan Academy of Forestry, Chengdu 610081, China
  • Received:2017-06-27 Online:2018-03-18 Published:2018-03-18
  • Contact: * E-mail: leijp@caf.ac.cn
  • Supported by:

    This work was supported by the Study on the Degradation Mechanism and Recovery of Alpine Forest in Western Region (CAFYBB2014ZD001)

Abstract: Warming and herbaceous functional group removal experiment was conducted in subalpine meadow to examine the effects of herbaceous species on Abies faxoniana seedlings by analyzing its physiological responses. The survival rate and non-structural carbohydrate content were significantly increased, but the growth and root/shoot of A. faxoniana were decreased. Seedling survival was significantly positively correlated with non-structural carbohydrate content, especially with soluble sugar. Under the treatment without warming, herbaceous species inhibited the survival of A. faxoniana, increased height growth and aboveground biomass. Grasses and forbs decreased the root length and belowground biomass of A. faxoniana. In the warming treatment, forbs increased the survival of A. faxoniana, sedges decreased root length and belowground biomass of A. faxoniana, and grasses and forbs decreased height growth and aboveground biomass of A. faxoniana. Simulated warming increased the survival of A. faxoniana seedlings, but also made it face stronger competition from herbaceous and thus inhibited its growth.

Key words: Abies faxoniana, non-structural carbohydrate, simulated warming, functional group removal