冷杉月径向生长量的变化,考虑其对气候因素的反应

IF 2.6 2区 农林科学 Q1 FORESTRY
Yiying Wang, Xiangwen Deng, Xie Zhang, Fuming Xiao, Renhua Zheng, Bin Yang, Wenhua Xiang
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引用次数: 0

摘要

树木径向生长与气候因子之间的关系错综复杂,并受到与全球气候变化有关的各种因素的影响。冷杉(Cunninghamia lanceolata (Lamb.) Hook.其生产力主要由径向生长决定,一直受到气候变化的影响。我们的研究旨在探索中国冷杉种植园在四个不同气候区的生长模式,并阐明径向生长与气候因子之间的相关性。通过相关分析和结构方程模型(SEM),我们解释了径向生长趋势与气候因子之间的关系。结果表明,四个产区的月径向生长量存在差异,福建和江西为 "单峰曲线",湖南为 "双峰曲线",云南为 "三峰曲线"。径向生长与温度和降水量呈正相关。干燥指数与福建和江西的径向生长呈弱相关,但与湖南和云南的径向生长呈显著正相关。SEM 分析表明,影响径向生长的生物因子的路径系数(福建为 0.352、江西为 0.616、湖南为 0.595、云南为 0.528)和气候因子的路径系数(福建为 -0.003、江西为 0.150、湖南为 0.265、云南为 0.005)。影响径向生长的因子在福建最少,在云南最多,这表明从沿海到内陆地区,冷杉径向生长对气候的敏感性更大。这些结果加深了我们对气候对森林生产力影响的理解,为气候变化下亚热带人工林的可持续管理提供了科学依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Variations of monthly radial growth of Chinese fir [Cunninghamia lanceolata (Lamb.) Hook.] considering its responses to climatic factors

Variations of monthly radial growth of Chinese fir [Cunninghamia lanceolata (Lamb.) Hook.] considering its responses to climatic factors

The relationship between tree radial growth and climate factors is intricate and affected by various factors related to global climate change. Chinese fir [Cunninghamia lanceolata (Lamb.) Hook.)] is a crucial fast-growing timber species in subtropical China. Its productivity, primarily determined by radial growth, has been influenced by climate change. Our study aimed to explore growth patterns and elucidate the correlation between radial growth and climate factors in Chinese fir plantations across four distinct climatic regions. Through correlation analysis and structural equation model (SEM), we explained the relationship between radial growth trends and climate factors. The results showed that monthly radial growth differed among the four production areas, with an “unimodal curve” in Fujian and Jiangxi, a “bimodal curve” in Hunan, and a “trimodal curve” in Yunnan. Radial growth was positively correlated with temperature and precipitation. The dryness index had a weak correlation with radial growth in Fujian and Jiangxi but a significant positive correlation in Hunan and Yunnan. SEM analyses indicated path coefficients for biological factors influencing radial growth (0.352 in Fujian, 0.616 in Jiangxi, 0.595 in Hunan, and 0.528 in Yunnan) and climate factors ( -0.003 in Fujian, 0.150 in Jiangxi, 0.265 in Hunan, and 0.005 in Yunnan). The factors affecting radial growth were the least in Fujian and the most in Yunnan, indicating greater climate sensitivity in the radial growth of Chinese fir from coastal to inland areas. These results enhance our understanding of climate impacts on forest productivity and offer a scientific basis for sustainably managing subtropical plantations under climate change.

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来源期刊
CiteScore
5.10
自引率
3.60%
发文量
77
审稿时长
6-16 weeks
期刊介绍: The European Journal of Forest Research focuses on publishing innovative results of empirical or model-oriented studies which contribute to the development of broad principles underlying forest ecosystems, their functions and services. Papers which exclusively report methods, models, techniques or case studies are beyond the scope of the journal, while papers on studies at the molecular or cellular level will be considered where they address the relevance of their results to the understanding of ecosystem structure and function. Papers relating to forest operations and forest engineering will be considered if they are tailored within a forest ecosystem context.
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