4.6 Article

Limitation by vapour pressure deficit shapes different intra-annual growth patterns of diffuse- and ring-porous temperate broadleaves

期刊

NEW PHYTOLOGIST
卷 233, 期 6, 页码 2429-2441

出版社

WILEY
DOI: 10.1111/nph.17952

关键词

broadleaves; climate change; dendrometer; growth dynamics; temperate forest; vapour pressure deficit

资金

  1. Terrestrial Environmental Observatories (TERENO) of the Helmholtz Association
  2. Alexander von Humboldt Foundation fellowship
  3. Ministry of Education, Science and Culture of Mecklenburg-Western Pomerania [ESF/14-BM-A55-0035/16]
  4. European Social Fund (ESF)
  5. ProjektDEAL

向作者/读者索取更多资源

Understanding the effects of temperature and moisture on radial growth is crucial for assessing the impacts of climate change on carbon and water cycles. This study analysed sub-daily growth dynamics of 35 trees and found that the growth patterns were more influenced by vapor pressure deficit (VPD) than temperature, and different tree species exhibited different growth patterns.
Understanding the effects of temperature and moisture on radial growth is vital for assessing the impacts of climate change on carbon and water cycles. However, studies observing growth at sub-daily temporal scales remain scarce. We analysed sub-daily growth dynamics and its climatic drivers recorded by point dendrometers for 35 trees of three temperate broadleaved species during the years 2015-2020. We isolated irreversible growth driven by cambial activity from the dendrometer records. Next, we compared the intra-annual growth patterns among species and delimited their climatic optima. The growth of all species peaked at air temperatures between 12 and 16 degrees C and vapour pressure deficit (VPD) below 0.1 kPa. Acer pseudoplatanus and Fagus sylvatica, both diffuse-porous, sustained growth under suboptimal VPD. Ring-porous Quercus robur experienced a steep decline of growth rates with reduced air humidity. This resulted in multiple irregular growth peaks of Q. robur during the year. By contrast, the growth patterns of the diffuse-porous species were always right-skewed unimodal with a peak in June between day of the year 150-170. Intra-annual growth patterns are shaped more by VPD than temperature. The different sensitivity of radial growth to VPD is responsible for unimodal growth patterns in both diffuse-porous species and multimodal growth pattern in Q. robur.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据