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应用生态学报 ›› 2021, Vol. 32 ›› Issue (8): 2857-2865.doi: 10.13287/j.1001-9332.202108.012

• 研究论文 • 上一篇    下一篇

太行山南麓不同径级栓皮栎生长对气候要素及干旱事件的响应

贾汉森1,2, 高峻1,2, 张劲松1,2*, 孟平1,2, 孙守家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
  • 收稿日期:2021-01-15 接受日期:2021-04-26 出版日期:2021-08-15 发布日期:2022-02-15
  • 通讯作者: *E-mail: zhangjs@caf.ac.cn
  • 作者简介:贾汉森, 男, 1993年生, 博士研究生。主要从事植物生态学和树木年轮生态学研究。E-mail: 15201438271@163.com
  • 基金资助:
    中央级公益性科研院所项目(CAFYBB2018ZA001)资助

Growth response to climatic factors and drought events in Quercus variabilis trees of different diameter classes at south aspect of Taihang Mountains, China

JIA Han-sen1,2, GAO Jun1,2, ZHANG Jin-song1,2*, MENG Ping1,2, SUN Shou-jia1,2   

  1. 1Research Institute of Forestry, Chinese Academy of Forestry/Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China;
    2Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
  • Received:2021-01-15 Accepted:2021-04-26 Online:2021-08-15 Published:2022-02-15
  • Contact: *E-mail: zhangjs@caf.ac.cn
  • Supported by:
    Central Public Welfare Research Institute Project (CAFYBB2018ZA001).

摘要: 为评估径级对树木的气候-生长关系的影响,建立太行山南麓低海拔地区栓皮栎全轮、早材、晚材宽度年表,对比两个径级栓皮栎人工林径向生长对气候响应的敏感性差异,使用叠加时代分析揭示干旱事件对不同径级栓皮栎的影响,为气候变化背景下研究区栓皮栎人工林可持续经营提供参考数据。结果表明: 大径级栓皮栎全轮、晚材年表的平均敏感度高于小径级栓皮栎年表,但小径级栓皮栎早材年表的平均敏感度高于大径级栓皮栎早材年表。晚材是树轮气候响应最敏感的组分。两径级栓皮栎标准年表指数对当年气候因子的响应模式相似。小径级栓皮栎全轮、晚材生长对当年6—8月的气候因子更敏感,其早材对生长季之前(1—2月)气候因子更敏感;而大径级栓皮栎早材对去年的气候因子更敏感,有更强的滞后效应。研究区栓皮栎对干旱非常敏感,干旱年份两径级栓皮栎全轮、晚材的径向生长量显著低于上一年,且大径级栓皮栎的减少幅度更高,但干旱后大径级栓皮栎生长恢复程度更高。

关键词: 栓皮栎, 径向生长, 气候响应, 干旱

Abstract: To explore the effects of diameter class on the climate-growth relationship of trees, the width chronologies of ringwood, earlywood, and latewood of Quercus variabilis were established in the low altitude area of the south aspect of the Taihang Mountains. We estimated the sensitivity of radial growth of two diameter classes of Q. variabilis plantation to climate. The effects of drought events on Q. variabilis plantation was quantified by superimposed time analysis. Under climate change, we aimed to provide reference data for sustainable management of Q. variabilis. Our results showed that the mean sensitivity of ringwood and latewood of large diameter classes were higher than small diameter classes. The mean sensitivities of earlywood of small diameter classes were higher than large diameter classes. The latewood was the most sensitive component of tree-ring. The responses of the standard chronological indices of two diameter classes to climate factors were similar. The growth of ringwood and latewood of small diameter classes were more sensitive to the climatic factors from June to August. The earlywood was more sensitive to the climatic factors before the growing season (from January to February). Furthermore, the earlywood of large diameter classes was more sensitive to the climatic factors of the last year, with a stronger hysteresis effect. It suggested that Q. variabilis was sensitive to drought. The radial growth of Q. variabilis of ringwood and latewood in drought year was significantly lower than that of last year. The reduction of Q. variabilis with large diameters was higher than that of small diameters, but with higher growth recovery degree after drought.

Key words: Quercus variabilis, radial growth, climate response, drought