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应用生态学报 ›› 2018, Vol. 29 ›› Issue (3): 687-695.doi: 10.13287/j.1001-9332.201803.010

• 目录 • 上一篇    下一篇

模拟增温和功能群去除对岷江冷杉幼苗存活和生长的影响

庞晓瑜1,2, 袁秀锦3, 王奥4, 李迈和5, 6, 刘兴良7, 潘红丽7, 于飞海4, 雷静品1,2*   

  1. 1中国林业科学研究院林业研究所, 国家林业局林木培育重点实验室, 北京 100091;
    2南京林业大学南方现代林业协同创新中心, 南京 210037;
    3中国林业科学研究院森林生态环境与保护研究所, 国家林业局森林生态环境重点实验室, 北京 100091;
    4北京林业大学自然保护区学院, 北京 100083;
    5中国科学院沈阳应用生态研究所, 沈阳 110016;
    6瑞士联邦森林、雪和景观研究院, 瑞士苏黎世CH-8903;
    7四川林业科学研究院, 成都 610081
  • 收稿日期:2017-06-27 出版日期:2018-03-18 发布日期:2018-03-18
  • 通讯作者: * E-mail: leijp@caf.ac.cn
  • 作者简介:庞晓瑜, 女, 1991年生, 硕士研究生. 主要从森林生态学研究. E-mail: 526774814@qq.com
  • 基金资助:

    本文由西部地区高山森林退化机制与恢复技术研究项目(CAFYBB2014ZD001)资助

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)

摘要: 通过模拟增温和功能群去除试验,研究不同功能群的草本植物在岷江冷杉幼苗更新定植过程的作用,分析其在温度升高条件下生理指标的变化.结果表明: 增温提高了岷江冷杉幼苗的存活率和植物体内非结构性碳水化合物含量,但抑制了幼苗的生长和根冠比.岷江冷杉幼苗的非结构性碳水化合物含量,尤其是可溶性糖含量与存活率呈显著正相关.不增温处理中,草本植物降低了幼苗的存活率,促进幼苗的株高生长和地上生物量积累,禾本科植物和杂类草抑制了幼苗根系生长和地下生物量的积累;增温处理中,杂类草的存在提高了幼苗的存活率,莎草科则显著抑制了幼苗根系生长和地下生物量的积累,禾本科植物和杂类草抑制了幼苗的高生长和地上生物量积累.模拟增温提高了林线树种岷江冷杉幼苗的存活率,但使其面临来自草本植物更剧烈的竞争,抑制其生长.

关键词: 功能群去除, 模拟增温, 非结构性碳水化合物, 岷江冷杉

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