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Chinese Journal of Applied Ecology ›› 2025, Vol. 36 ›› Issue (11): 3277-3286.doi: 10.13287/j.1001-9332.202511.005

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Response of fiber anatomical characteristics of Fraxinus mandshurica to climate change in Maoershan, Northeast China

LIU Ye1,2, WANG Xigang3, ZENG Fansuo1,4, ZHAN Yaguang1,4, ZHAO Haifeng5, TANG Ying6, XIN Ying1,2*   

  1. 1State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China;
    2College of Forestry, Northeast Forestry University, Harbin 150040, China;
    3Daxing'anling Aca-demy of Agricultural and Forestry Sciences, Jiagedaqi 165000, Heilongjiang, China;
    4College of Life Science, Northeast Forestry University, Harbin 150040, China;
    5Cui Gang Forest Farm, Xinlin Forestry Bureau, Daxinganling Forestry Group Corporation, Cuigang 165026, Heilongjiang, China
  • Received:2025-08-01 Accepted:2025-09-24 Online:2025-11-18 Published:2025-12-15

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Abstract: Fraxinus mandshurica is a native high-quality timber species in Northeast China. The anatomical characteristics of its wood fibers are crucial indicators of wood performance. In the progeny test forest of F. mandshurica in Maoershan Experimental Forest, we investigated the response of fiber anatomical characteristics of whole ring, early-wood, and latewood to climate change by dendrochronology and wood anatomy methods. The results showed that juvenile F. mandshurica experienced a rapid growth period of approximately 10 years. From 2003 onwards, the ring width, fiber cell number, and total fiber cell area showed fluctuating increases, reaching peak values in 2011. At 2011, the ring width was 3749.59 μm, fiber cell number was 3750, and total fiber cell area was 760388.85 μm2. There was a consistent overall correlation among the anatomical characteristics of fibers in the whole ring, earlywood, and latewood. The ring width was significantly positively correlated with both fiber cell number and total fiber cell area. The ring width, fiber cell number, and total fiber cell area of earlywood were primarily constrained by precipitation. These characteristics showed a significant negative correlation with precipitation in March, a significant positive correlation with precipitation in April, and negative correlation with temperature in June. The ring width, fiber cell number, and total fiber cell area of latewood were significantly negatively correlated with the minimum temperature and precipitation in September, and significantly positively correlated with maximum temperature in September. Under the low-temperature event, ring width, fiber cell number, and total fiber cell area decreased significantly by 19.7%, 24.2%, and 22.0%, respectively. Following the event, the resilience was 1.14, 1.14, and 1.26. Both temperature and precipitation jointly affected ring width of earlywood and latewood and fiber cell growth. The low-temperature event could significantly reduce both fiber cell number and total fiber cell area, thereby inhibiting radial growth. In response to the low-temperature event, F. mandshurica showed a significant capacity for recovery.

Key words: Fraxinus mandshurica, fiber anatomical characteristics, climate change, low temperature event