将树木的个体生长稳定性与林下植被层的复杂性联系起来

IF 5.3 1区 环境科学与生态学 Q1 ECOLOGY
Jiacheng Zheng, Lixin Lyu, Yuan Zhong, Jing Yang, Hongyan Qiu, Qi-Bin Zhang
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引用次数: 0

摘要

树木生长的稳定性对于维护森林生态系统服务至关重要。尽管对树木生长与气候之间的相关性进行了广泛的研究,但森林林下植被对树木生长稳定性的影响仍未得到充分研究。我们在青藏高原东南部海拔3600米至4400米的两个海拔梯度上调查了林地并采集了树环样本。建立了一个量化树木个体生长稳定性的指数,并研究了该指数与林下结构复杂性之间的联系。我们发现,在复杂的森林群落中,树木生长的稳定性更为明显。在林下复杂度较高的森林中,湿润年份中生长释放的树木比例增加,而干旱年份中生长抑制的树木比例增加。有趣的是,即使在最干旱的年份,一部分树木的生长也会出现异常的增长,而另一部分树木则会在最潮湿的年份出现异常的生长减少。此外,林下结构更复杂的森林中,出现这两种 "反相 "生长状态的树木比例更高。综述。我们的研究强调了树木个体生长稳定性与林下结构复杂性之间的联系。在林下结构复杂的森林中,林上层的生长稳定性是以牺牲个体生长稳定性和同步性为代价的。这些发现强调,在评估未来气候变化对森林动态的影响时,有必要关注树木生长与林下群落结构之间的相互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Linking individualistic growth stability of trees to the complexity of understorey layers

Linking individualistic growth stability of trees to the complexity of understorey layers

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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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