气候变化领域集成服务门户(CCPortal): Annual growth of Fagus orientalis is limited by spring drought conditions in Iran's Golestan Province

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DOI	10.1007/s11676-023-01674-7
	Annual growth of Fagus orientalis is limited by spring drought conditions in Iran's Golestan Province
	Ghorbani, Khalil; Mohammadi, Jahangir; Ghaleh, Laleh Rezaei
发表日期	2024
ISSN	1007-662X
EISSN	1993-0607
起始页码	35
结束页码	1
卷号	35 期号:1
英文摘要	Due to the lack of a uniform and accurate definition of 'drought', several indicators have been introduced based on different variables and methods, and the efficiency of each of these is determined according to their relationship with drought. The relationship between two drought indices, SPI (standardized precipitation index) and SPEI (standardized precipitation-evapotranspiration index) in different seasons was investigated using annual rings of 15 tree samples to determine the effect of drought on the growth of oriental beech (Fagus orientalis Lipsky) in the Hyrcanian forests of northern Iran. The different evapotranspiration calculation methods were evaluated on SPEI efficiency based on Hargreaves-Samani, Thornthwaite, and Penman-Monteith methods using the step-by-step M5 decision tree regression method. The results show that SPEI based on the Penman-Monteith in a three-month time scale (spring) had similar temporal changes and a better relationship with annual tree rings (R2 = 0.81) at a 0.05 significant level. Abrupt change and a decreasing trend in the time series of annual tree rings are similar to the variation in the SPEI based on the Penman-Monteith method. Factors affecting evapotranspiration, temperature, wind speed, and sunshine hours (used in the Penman-Monteith method), increased but precipitation decreased. Using non-linear modeling methods, SPEI based on Penman-Monteith best illustrated climate changes affecting tree growth.
英文关键词	Climate change; Drought index; Hyrcanian forests; SPEI; Annual growth rings; Fagusorientalis
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:001117595500002
来源期刊	JOURNAL OF FORESTRY RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288679
作者单位	Gorgan University of Agricultural Sciences & Natural Resources; Gorgan University of Agricultural Sciences & Natural Resources; Urmia University
推荐引用方式 GB/T 7714	Ghorbani, Khalil,Mohammadi, Jahangir,Ghaleh, Laleh Rezaei. Annual growth of Fagus orientalis is limited by spring drought conditions in Iran's Golestan Province[J],2024,35(1).
APA	Ghorbani, Khalil,Mohammadi, Jahangir,&Ghaleh, Laleh Rezaei.(2024).Annual growth of Fagus orientalis is limited by spring drought conditions in Iran's Golestan Province.JOURNAL OF FORESTRY RESEARCH,35(1).
MLA	Ghorbani, Khalil,et al."Annual growth of Fagus orientalis is limited by spring drought conditions in Iran's Golestan Province".JOURNAL OF FORESTRY RESEARCH 35.1(2024).