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应用生态学报 ›› 2021, Vol. 32 ›› Issue (10): 3415-3427.doi: 10.13287/j.1001-9332.202110.005

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大兴安岭兴安落叶松和樟子松径向生长对气候变化的响应差异

杨婧雯1,2, 张秋良2, 宋文琦1, 张旭3, 李宗善4, 张远东5, 王晓春1*   

  1. 1东北林业大学生态研究中心, 森林生态系统可持续经营教育部重点实验室, 哈尔滨 150040;
    2内蒙古农业大学林学院, 呼和浩特 010018;
    3西北农林科技大学林学院, 陕西杨凌 712100;
    4中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085;
    5中国林业科学研究院森林生态环境与保护研究所/国家林业和草原局森林生态环境重点实验室, 北京 100091
  • 收稿日期:2021-03-24 修回日期:2021-06-25 出版日期:2021-10-15 发布日期:2022-04-15
  • 通讯作者: * E-mail: wangx@nefu.edu.cn
  • 作者简介:杨婧雯, 女, 1992年生, 博士研究生。主要从事树木生长对气候变化的响应与适应研究。E-mail: yjw92@outlook.com
  • 基金资助:
    国家重点研发计划项目(2016YFA0600800)、国家自然科学基金项目(41877426)、中央高校基本科研业务费专项资金项目(2572017DG02)和中国气象局东北地区生态气象创新开放实验室开放基金项目(stqx2018zd02)资助

Response differences of radial growth of Larix gmelinii and Pinus sylvestris var. mongolica to climate change in Daxing'an Mountains, Northeast China

YANG Jing-wen1,2, ZHANG Qiu-liang2, SONG Wen-qi1, ZHANG Xu3, LI Zong-shan4, ZHANG Yuan-dong5, WANG Xiao-chun1*   

  1. 1Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management, Mini-stry of Education, College of Forestry, Northeast Forestry University, Harbin 150040, China;
    2College of Forestry, Inner Mongolia Agricultural University, Hohhot 010018, China;
    3College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China;
    4State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China;
    5Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry/Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Beijing 100091, China
  • Received:2021-03-24 Revised:2021-06-25 Online:2021-10-15 Published:2022-04-15
  • Contact: * E-mail: wangx@nefu.edu.cn
  • Supported by:
    China National Key Research and Development Program (2016YFA0600800), the National Natural Science Foundation of China (41877426), the Fundamental Research Funds for the Central Universities (2572017DG02), and the Fund of Eco-meteorological Innovation Open Laboratory in Northeast China, China Meteorological Bureau (stqx2018zd02).

摘要: 大兴安岭是我国气候变化最为显著的地区之一,兴安落叶松和樟子松是该地区最为重要的树种,研究它们径向生长对气候变化的响应差异,可以为预测气候变化下我国北方森林动态提供科学依据。在大兴安岭地区选择6个样点共采集兴安落叶松树轮和樟子松树轮样芯451个,建立了12个标准年表。比较了1900年以来树木径向生长趋势,利用Pearson相关分析法分析各样点兴安落叶松和樟子松生长对气候因子的响应,运用线性混合模型探讨温度和降水对兴安落叶松和樟子松年径向生长的影响,通过滑动相关对比两个树种生长-气候关系的时间稳定性。结果表明: 兴安落叶松径向生长与3月平均温度呈负相关,与上一年冬季和当年7月降水呈正相关。樟子松径向生长与当年8月温度呈正相关,与当年生长季(5—9月)降水呈正相关。冬季降雪对兴安落叶松径向生长起到重要的促进作用,夏季过多降水对樟子松径向生长起到显著的限制作用。兴安落叶松和樟子松生长对气候变化的响应存在明显差异,因此,气候变化可能会影响北方森林生态系统的树木生长、物种组成以及空间分布等。

关键词: 气候变化, 大兴安岭, 树木年轮, 兴安落叶松, 樟子松

Abstract: Daxing'an Mountains is one of regions in China with the most significant climate change. Larix gmelinii and Pinus sylvestris var. mongolica are the most important species in this area. The study of their radial growth response to climate change would provide a scientific basis for predicting the dynamics of boreal forests under climate change. A total of 451 tree-ring cores of L. gmelinii and P. sylvestris var. mongolica were collected from six sites in the Daxing'an region, and 12 standard chronologies were established. We compared the tree growth trend since 1900, and analyzed their response to the climate factor in each site using Pearson correlation analysis. Effects of temperature and precipitation on the annual radial growth of L. gmelinii and P. sylvestris var. mongolica were investigated by linear mixed models. The time stability of the relationship between two species growth-climate was compared by moving correlation. The results showed that the radial growth of L. gmelinii was negatively correlated with mean temperature in March and positively correlated with precipitation in the previous winter and July of current year. The radial growth of P. sylvestris var. mongolica was positively correlated with temperature in August and precipitation in the growing season (from May to September) of current year. Snow in winter played an important role in promoting the radial growth of L. gmelinii, whereas precipitation in summer limited the radial growth of P. sylvestris var. mongolica. The responses of L. gmelinii and P. sylvestris var. mongolica to climate change were significantly different, which affected tree growth, species composition, and spatial distribution in the boreal forests.

Key words: climate change, Daxing'an Mountains, tree ring, Larix gmelinii, Pinus sylvestris var. mongolica.