中国北方半干旱地区针叶树和阔叶树的生长差异及其对气候变暖干燥的反应

IF 2.6 2区 农林科学 Q1 FORESTRY
Ying Zhao, Junxia Li, Yuting Jin, Tsun Fung Au, Di Cui, Zhenju Chen
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引用次数: 0

摘要

森林为人类社会提供不可替代的生态系统服务,并防止环境退化,但气候变化已严重破坏了这些基本功能。因此,研究不同树种对气候变暖的反应和适应性非常重要。在此,我们研究了气候变暖如何影响中国北方温带半干旱地区的一种针叶树(Pinus tabuliformis)和两种阔叶树(Populus davidiana 和 Betula platyphylla)的生长模式和生长-气候响应。我们的研究结果表明,在同一地点,山毛榉具有相似的区域生长模式,而两种阔叶树种则具有种间生长相似性。阔叶树对干旱的恢复力和抗逆性高于针叶树,而针叶树对干旱的抗逆性高于阔叶树,表明阔叶树种对干旱的反应快于针叶树。气候变暖加剧了缺水状况,从而阻碍了树木的生长,尤其是水分供应已成为该地区松树生长的限制因素。树木通过利用非生长季节的水分来弥补树木生长所需的水源,从而应对缺水问题。这项研究不仅揭示了不同树种对生长-气候反应的差异,还强调了考虑特定树种对气候变暖的适应性和森林管理策略多样化的必要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Divergent growth and responses of conifer and broad-leaved trees to warming-drying climate in a semi-arid region, northern China

Divergent growth and responses of conifer and broad-leaved trees to warming-drying climate in a semi-arid region, northern China

Forests provide irreplaceable ecosystem services for human society and prevent environmental degradation but climate change has substantially undermined these fundamental functions. It is therefore important to examine the responses and adaptation of different tree species to climate warming. Here, we investigated how climate warming has affected tree growth patterns and growth-climate responses of a conifer (Pinus tabuliformis) and two broad-leaved species (Populus davidiana and Betula platyphylla) in a temperate semi-arid region in the northern China. Our results showed that P. tabuliformis had a similar regional growth pattern and two broad-leaved species shared an interspecific growth similarity at the same site. Broad-leaved trees had a higher recovery and resilience to drought than the conifer while conifers were more resistant to drought compared to broad-leaved trees, indicating a faster drought-response of broad-leaved species than that of conifers. The warming climate has hindered the tree growth by exacerbating water-deficit, and in particular, water availability has become the limiting factor for the growth of pines in the area. Trees coped with the water-deficit by taking advantage of non-growing season water to compensate the water source for tree growth. The study not only revealed the differences of growth-climate responses between species but also highlighted the necessity to consider species-specific adaptation to climate warming and diversify forest management strategies.

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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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