Response of leaf internal CO2 concentration and intrinsic water-use efficiency in Norway spruce to century-long gradual CO2 elevation.

IF 2.1 4区 生物学 Q2 PLANT SCIENCES
Photosynthetica Pub Date : 2025-03-13 eCollection Date: 2025-01-01 DOI:10.32615/ps.2025.006
J Šantrůček, J Kubásek, J Janová, H ŠantrůčKOvá, J Altman, J Tumajer, M Hrádková, E Cienciala
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引用次数: 0

Abstract

The strategies of Norway spruce [Picea abies (L.) Karst.] to increasing atmospheric CO2 concentration (C a) are not entirely clear. Here, we reconstructed centennial trajectories of leaf internal CO2 concentration (C i) and intrinsic water-use efficiency (WUEi) from the amount of 13C in tree-ring cellulose. We collected 57 cores across elevations, soil, and atmospheric conditions in central Europe. Generally, WUEi and C i increased over the last 100 years and the C i/C a ratio remained almost constant. However, two groups were distinguished. The first group showed a quasi-linear response to C a and the sensitivity of C i to C a (s = dC i/dC a) ranged from 0 to 1. Trees in the second group showed nonmonotonic responses with extremes during the peak of industrial air pollution in the 1980s and s increase from -1 to +1.6. Our study shows a marked attenuation of the rise in WUEi during the 20th century leading to invariant WUEi in recent decades.

挪威云杉叶片内部CO2浓度和内在水分利用效率对百年CO2逐渐升高的响应
挪威云杉[Picea abies (L.)]的策略岩溶。对增加大气中二氧化碳浓度(C a)的影响并不完全清楚。本文利用树木年轮纤维素中13C的含量,重建了叶片内部CO2浓度(C i)和内在水分利用效率(WUEi)的百年变化轨迹。我们在中欧收集了57个不同海拔、土壤和大气条件的岩心。总体而言,wui和C i在近100年呈上升趋势,C i/C a基本保持不变。然而,两组被区分开来。第一组对C a表现出准线性响应,C i对C a的灵敏度(s = dC i/dC a)范围为0 ~ 1。第二组树木在20世纪80年代工业空气污染高峰期间表现出非单调响应,从-1增加到+1.6。我们的研究表明,20世纪WUEi的上升明显减弱,导致近几十年来WUEi保持不变。
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来源期刊
Photosynthetica
Photosynthetica 生物-植物科学
CiteScore
5.60
自引率
7.40%
发文量
55
审稿时长
3.8 months
期刊介绍: Photosynthetica publishes original scientific papers and brief communications, reviews on specialized topics, book reviews and announcements and reports covering wide range of photosynthesis research or research including photosynthetic parameters of both experimental and theoretical nature and dealing with physiology, biophysics, biochemistry, molecular biology on one side and leaf optics, stress physiology and ecology of photosynthesis on the other side. The language of journal is English (British or American). Papers should not be published or under consideration for publication elsewhere.
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