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应用生态学报 ›› 2021, Vol. 32 ›› Issue (1): 46-56.doi: 10.13287/j.1001-9332.202101.004

• 研究论文 • 上一篇    下一篇

长白山群落交错带长白松和鱼鳞云杉径向生长对气候变暖的响应

于健1,2, 陈佳佳1, 孟盛旺3, 周华4, 周光2,5, 高露双2, 王永平1, 刘琪璟2*   

  1. 1江苏农林职业技术学院风景园林学院, 江苏句容 212400;
    2北京林业大学林学院, 北京 100083;
    3中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室, 北京 100101;
    4贵州省林业科学研究院, 贵阳 550000;
    5江西省林业科学院, 南昌 330032
  • 收稿日期:2020-07-08 接受日期:2020-10-20 出版日期:2021-01-15 发布日期:2021-07-15
  • 通讯作者: * E-mail: liuqijing@bjfu.edu.cn
  • 作者简介:于 健, 男, 1986年生, 博士研究生。主要从事树轮气候学研究。E-mail: yujian1986829@sina.com
  • 基金资助:
    江苏农林职业技术学院科技计划项目(2020kj005,2019kj012)和国家自然科学基金项目(31670436)

Response of radial growth of Pinus sylvestriformis and Picea jezoensis to climate warming in the ecotone of Changbai Mountain, Northeast China

YU Jian1,2, CHEN Jia-jia1, MENG Sheng-wang3, ZHOU Hua4, ZHOU Guang2,5, GAO Lu-shuang2, WANG Yong-ping1, LIU Qi-jing2*   

  1. 1School of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry, Jurong 212400, Jiangsu, China;
    2College of Forestry, Beijing Forestry University, Beijing 100083, China;
    3Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
    4Guizhou Academy of Forestry, Guiyang 550000, China;
    5Jiangxi Academy of Forestry, Nanchang 330032, China
  • Received:2020-07-08 Accepted:2020-10-20 Online:2021-01-15 Published:2021-07-15
  • Contact: * E-mail: liuqijing@bjfu.edu.cn
  • Supported by:
    Science and Technology Project of Jiangsu Vocational College of Agriculture and Forestry (2020kj005, 2019kj012) and the National Natural Science Foundation of China (31670436).

摘要: 长白山是典型的温性针阔叶混交林分布区,也是受全球气候变化影响最为显著的地区之一。为了解该区森林生态系统对气候变化的响应,本研究选取该区阔叶红松林与云冷杉林(又称暗针叶林)群落交错带内优势乔木树种长白松和鱼鳞云杉作为对象,获取树木年轮宽度资料建立标准年表,明确限制2个树种径向生长的关键气候因子。结果表明: 长白松和鱼鳞云杉径向生长对气候变化的响应存在差异,长白松较鱼鳞云杉对气候因子的响应更加敏感,更适合用于年轮气候学研究。长白松径向生长具有与平均气温升高相一致的趋势,而鱼鳞云杉径向生长则出现随气温升高而下降的“分离现象”。相关分析表明,长白松径向生长主要受气温限制,尤其是受上年7、8月和当年9月平均气温影响较大。鱼鳞云杉标准年表与大多数月份的平均气温呈负相关,表现为受气温和降水量的综合制约。升温突变后,长白松和鱼鳞云杉径向生长与气候因子相关性较升温突变前减弱,并且在个别月份出现了径向生长与气候因子相关性由正相关向负相关的转变。目前,升温可能并未超过长白松径向生长的临界阈值,对其径向生长仍保持着促进作用。小波分析表明,该地区树木径向生长可能受到一些大尺度的大气-海洋-陆地变化的耦合作用影响。综上,气候变暖有利于增加长白松径向生长量,升温导致的干旱胁迫是限制鱼鳞云杉径向生长的主要原因,如果未来全球气温持续增加,将对鱼鳞云杉产生不利影响。本结果有助于理解长白松和鱼鳞云杉径向生长对未来气候变化的响应,并为在该区使用该树种进行气候重建提供一定的基础数据。

关键词: 长白山, 树木年轮宽度, 气候变化, 生长-气候关系

Abstract: Changbai Mountain is a typical distribution area of temperate coniferous and broad-leaved mixed forests, with significant influence of global climate change. In order to understand the responses of forest ecosystem to climate change, we examined the responses of dominant arbor species in the community ecotone of broad-leaved Korean pine forest and spruce-fir forest (also known as dark coniferous forest), Pinus sylvestriformis and Picea jezoensis. The standard chronologies were established by obtaining tree ring width data in order to identity the key climatic factors that confine the radial growth of both species. The responses of P. sylvestriformis and P. jezoensis to climate factors were different.P. sylvestriformis was more sensitive than P. jezoensis, indicating that P. sylvestriformis was more suitable for dendroclimatological analysis. The radial growth of P. sylvestriformis was consistent with the increases of mean temperature, while the radial growth of P. jezoensis showed a “divergence problem” which decreased with the increases of mean temperature. The radial growth of P. sylvestriformis was mainly limited by temperature, especially the mean temperature in last July and August and current September. However, there was a negative correlation between standard chronologies of P. jezoensis and mean temperature in most months, which was limited by both temperature and precipitation. The correlation between radial growth of both species and climate factors after sudden temperature rise, was weaker than that before sudden temperature rise. The correlation between radial growth and climate factors changed from positive to negative in some months. Current temperature rise might not exceed the critical threshold of the radial growth of P. sylvestriformis, which could promote the radial growth. In addition, the wavelet analysis showed that the radial growth of trees in this area might be affected by large-scale coupling effects of atmospheric-ocean-land changes. In conclusion, climate warming was beneficial to the radial growth of P. sylvestriformis, while drought stress caused by warming was the main factor limiting the radial growth of P. jezoensis. If the global temperature continues to increase in the future, it will have an adverse impact on P. jezoensis. The results would help improve our understanding of the responses of radial growth of P. sylvestriformis and P. jezoensis to future climate change, and provide some basic data for climate reconstruction using both species.

Key words: Changbai Mountains, tree-ring width, climate change, growth-climate relationship