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应用生态学报 ›› 2025, Vol. 36 ›› Issue (11): 3237-3244.doi: 10.13287/j.1001-9332.202511.008

• 研究论文 • 上一篇    下一篇

不同季节气象干旱对紫果冷杉径向生长的影响

张幸子, 王冰心, 郭明明*   

  1. 河北农业大学林学院, 河北保定 071000
  • 收稿日期:2025-08-17 接受日期:2025-09-23 出版日期:2025-11-18 发布日期:2026-06-18
  • 通讯作者: * E-mail: guomingming901@163.com
  • 作者简介:张幸子, 女, 2001年生, 硕士研究生。主要从事树木年轮学研究。E-mail: 1206018050@qq.com
  • 基金资助:
    国家自然科学基金项目(32301584)

Effect of meteorological droughts in different seasons on the radial growth of Abies recurvata

ZHANG Xingzi, WANG Bingxin, GUO Mingming*   

  1. College of Forestry, Hebei Agricultural University, Baoding 071000, Hebei, China
  • Received:2025-08-17 Accepted:2025-09-23 Online:2025-11-18 Published:2026-06-18

摘要: 为探究不同季节气象干旱对树木径向生长的影响,以四川省米亚罗林区海拔3400、3800和4000 m的紫果冷杉为研究对象,基于树木年轮宽度指数及标准年表,分析紫果冷杉径向生长与气候因子的相关性及其对不同季节(1998年春季、2008年夏季、2003年春季及夏季)气象干旱的抵抗力、恢复力和韧性。结果表明: 低海拔(3400 m)紫果冷杉树轮宽度年表与前一年9月到当年6月的帕默尔干旱指数(PDSI)呈显著正相关,与当年1月的平均最高气温呈显著负相关;中、高海拔(3800、4000 m)紫果冷杉树轮宽度年表与当年4月的PDSI和降水量呈显著正相关。3个海拔紫果冷杉径向生长对春夏季连续干旱和春季干旱的抵抗力显著低于夏季干旱,且中、高海拔对春夏季连续干旱的韧性(0.95、0.94)显著低于春季干旱(1.13、1.23)和夏季干旱(1.17、0.99)。春夏季连续干旱下,低海拔的抵抗力(0.57)显著低于高海拔(0.78);而其恢复力和韧性显著高于高海拔,中海拔的抵抗力亦显著低于高海拔;春季干旱下,低、中海拔的抵抗力和韧性显著低于高海拔;夏季干旱下,低、高海拔的恢复力和韧性显著低于中海拔。紫果冷杉径向生长受春夏季连续干旱的影响最严重,低海拔种群干旱抵抗力较弱,而高海拔种群受限于恢复力不足,导致其生长韧性显著低于低海拔种群。

关键词: 季节干旱, 径向生长, 气候响应, 气候因子, 生态韧性, 紫果冷杉

Abstract: To investigate the impact of meteorological droughts in different seasons on tree radial growth, we analyzed the correlations between radial growth of Abies recurvata at three altitudes (3400, 3800, 4000 m) and clima-tic factors along with resistance, recovery, and resilience to different seasonal droughts (spring 1998, summer 2008, consecutive spring-summer 2003) in Miyaluo of Sichuan, utilizing tree-ring width index and standard chronology. The results showed that at low altitude (3400 m), chronologies showed significant positive correlation with Palmer drought severity index (PDSI) from previous September to current June, and significant negative correlation with current January monthly mean maximum temperature. At middle and high altitudes (3800, 4000 m), significant positive correlation occurred with current April PDSI and precipitation. The resistance of radial growth at three altitudes to consecutive spring-summer drought and spring drought was significantly lower than that to summer drought, while the resilience to consecutive spring-summer drought at middle and high altitudes (0.95, 0.94) was significantly lower than that to spring drought (1.13, 1.23) and that to summer drought (1.17, 0.99). Under consecutive spring-summer drought, the resistance at low altitude (0.57) was significantly lower than that at high altitude (0.78), the recovery and resilience were significantly higher than those at high altitude, and the resistance at middle altitude was significantly lower than at high altitude. Under spring drought, the resistance and resilience at low and middle altitudes were significantly lower than at high altitude. Under summer drought, the recovery and resilience at low and high altitudes were significantly lower than at middle altitude. In summary, the radial growth of A. recurvata was most severely impacted by consecutive spring-summer drought. Populations at low altitudes demonstrated significantly weaker resistance, while those at high altitudes were limited by reduced recovery capacity, leading to lower growth resilience compared to low-altitude populations.

Key words: seasonal drought, radial growth, climate response, climatic factor, ecological resilience, Abies recurvata