气候变化领域集成服务门户(CCPortal): Growth responses to elevated environmental humidity vary between phenological forms of Picea abies

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DOI	10.3389/ffgc.2024.1370934
	Growth responses to elevated environmental humidity vary between phenological forms of Picea abies
	Sellin, Arne; Heinsoo, Katrin; Kupper, Priit; Meier, Riho; Ounapuu-Pikas, Eele; Reinthal, Taavi; Rosenvald, Katrin; Tullus, Arvo
发表日期	2024
EISSN	2624-893X
起始页码	7
卷号	7
英文摘要	Introduction: Global warming promotes geographical variability in climate, although the trends differ for the lower and higher latitudes of the Northern Hemisphere. By the end of the current century, the climate models project an increase of up to 20-30% in summer precipitation for northern Europe, accompanied by an increase in atmospheric humidity. Information on the effects of increasing precipitation and air humidity on the performance of northern trees is scant. Methods: We studied the effects of artificially elevated air relative humidity (RH) and soil moisture on growth, phenology and needle/shoot morphology of 5-year-old Norway spruce (Picea abies) saplings at the Free Air Humidity Manipulation (FAHM) experimental site in eastern Estonia. The trees were subjected to three treatments: C - control, ambient conditions; H - air humidification, mean relative humidity similar to + 5%; I - soil irrigation, precipitation +15%. Trees from pure stands were sampled from three experimental plots per treatment in 2022. Results: The needle morphology of P. abies was insensitive to moderate changes in air humidity and soil water content in northern mesic conditions. In contrast, the humidity treatments significantly affected shoot size, which decreased in the following order: C > I > H. This finding indicates a certain deceleration of the development of trees' assimilating surface under elevated air humidity. The humidity manipulation did not influence the timing of bud burst, but the trees differentiated between two phenological forms - early-and late-flushing forms. Trees growing under elevated RH exhibited slower growth rates compared to trees in C and I treatments. The early-flushing trees grew faster, while the late-flushing trees performed better under increasing environmental humidity. Conclusion: At high latitudes, the increasing precipitation and concomitant rise in atmospheric humidity counteract the enhancement of trees' growth and forest productivity predicted for boreal forests due to global warming. Given that the late phenological form of P. abies is more tolerant of wetter climates and less threatened by late spring frosts, it has a greater potential to adapt to regional climate trends predicted for northern Europe.
英文关键词	atmospheric humidity; climate change; epicuticular waxes; FAHM experiment; growth responses; needle/shoot morphology; Norway spruce; phenology
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Forestry
WOS类目	Ecology ; Forestry
WOS记录号	WOS:001220416000001
来源期刊	FRONTIERS IN FORESTS AND GLOBAL CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/291611
作者单位	University of Tartu; Tartu University Institute of Ecology & Earth Sciences; Estonian University of Life Sciences
推荐引用方式 GB/T 7714	Sellin, Arne,Heinsoo, Katrin,Kupper, Priit,et al. Growth responses to elevated environmental humidity vary between phenological forms of Picea abies[J],2024,7.
APA	Sellin, Arne.,Heinsoo, Katrin.,Kupper, Priit.,Meier, Riho.,Ounapuu-Pikas, Eele.,...&Tullus, Arvo.(2024).Growth responses to elevated environmental humidity vary between phenological forms of Picea abies.FRONTIERS IN FORESTS AND GLOBAL CHANGE,7.
MLA	Sellin, Arne,et al."Growth responses to elevated environmental humidity vary between phenological forms of Picea abies".FRONTIERS IN FORESTS AND GLOBAL CHANGE 7(2024).