The long-term effects of climatic factors on radial growth of downy birch (Betula pubescens) and rowan (Sorbus aucuparia) in East Iceland

IF 0.2 4区 农林科学 Q4 AGRICULTURE, MULTIDISCIPLINARY Icelandic Agricultural Sciences Pub Date : 2020-01-01 DOI:10.16886/ias.2020.07
Nandini Hannak, Ó. Eggertsson
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引用次数: 2

Abstract

The aim of this study was to investigate the tree-ring growth of rowan (Sorbus aucuparia L.) and downy birch (Betula pubescens Ehrh.) in Ranaskógur, a forest in East Iceland, and to determine its response to climate factors during the past century. Tree-core samples were collected in September 2018 and from those a tree-ring width (TRW) chronology and a standardized tree-ring index (TRI) chronology were produced. A statistical analysis between the chronologies and monthly mean temperatures and total monthly precipitation was carried out. The study found that both species had similar radial growth during the past century. The growth of birch responded significantly positively to June and July temperatures, while rowan responded significantly positively to July and August temperatures. The growth of neither species was significantly affected by precipitation across the whole period. However, in the 1940s to early 1960s, rowan growth correlated significantly with June precipitation, and birch with April and May precipitation.
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气候因素对冰岛东部毛桦树(Betula pubescens)和花楸(Sorbus aucuparia)径向生长的长期影响
本研究旨在研究冰岛东部Ranaskógur森林中鸦wan (Sorbus aucuparia L.)和桦(Betula pubescens Ehrh.)的年轮生长,并确定其在过去一个世纪对气候因子的响应。2018年9月采集了树芯样本,并从中产生了树轮宽度(TRW)年表和标准化树轮指数(TRI)年表。对年代学与月平均气温和月总降水量进行了统计分析。研究发现,在过去的一个世纪里,这两个物种的径向生长相似。白桦的生长对6月和7月的温度有显著的正响应,而罗文的生长对7月和8月的温度有显著的正响应。两种植物的生长均不受整个时期降水的显著影响。然而,在20世纪40年代至60年代初,rowan生长与6月降水显著相关,而桦木生长与4月和5月降水显著相关。
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来源期刊
Icelandic Agricultural Sciences
Icelandic Agricultural Sciences AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
0.80
自引率
0.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: Icelandic Agricultural Sciences is published annually, or more frequently. The deadline for submitting manuscripts that are intended to appear within that year is September. The journal is in English and is refereed and distributed internationally. It publishes original articles and reviews written by researchers throughout the world on any aspect of applied life sciences that are relevant under boreal, alpine, arctic or subarctic conditions. Relevant subjects include e.g. any kind of environmental research, farming, breeding and diseases of plants and animals, hunting and fisheries, food science, forestry, soil conservation, ecology of managed and natural ecosystems, geothermal ecology, etc.
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