亚地中海斯洛文尼亚四个道格拉斯冷杉种源的年轮、木材密度和气候生长关系

IF 2.1 3区 农林科学 Q2 FORESTRY Trees Pub Date : 2022-11-17 DOI:10.1007/s00468-022-02362-5
Luka Krajnc, Jožica Gričar, Jernej Jevšenak, Polona Hafner, Robert Brus
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引用次数: 0

摘要

分别分析了4种道格拉斯冷杉种源幼树期和成树期的年轮、木材密度和气候-生长关系。从1971年种植的IUFRO种源试验中选择了四个种源,根据它们的胸径和活力。从单株树木提取增量岩心,测量树木年轮宽度(RW)、早木宽度(EWW)和晚木宽度(LWW)。采用阻力钻孔法对立木密度进行了评价。计算了RW、EWW、LWW和晚木份额的种源年代学与逐日累积标准化降水-蒸散指数(SPEI)之间的气候-生长相关性。对幼期和成熟期分别进行了分析。种源1064 (Jefferson)和1080 (Yelm)比种源1028 (Merrit)和1089 (Cathlamet)表现出更大的年径向增量。在幼鱼期径向增量最大的两个种源在成虫期的变化趋势不相同。在所有种源中,幼鱼期的RW比成虫期宽,因此EWW和LWW也比成虫期宽。在所有情况下,幼木的晚木比例都高于成熟木。所有四个种源在两个分析的生长阶段具有相似的木材密度。我们的分析表明,在选择最有希望种植的种源时,需要考虑从幼苗期到成虫期相对生长率的可能变化。
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Tree rings, wood density and climate–growth relationships of four Douglas-fir provenances in sub-Mediterranean Slovenia

Tree rings, wood density and the climate–growth relationship of four Douglas-fir provenances were analysed separately for the juvenile and adult phases. Four provenances were selected from an existing IUFRO provenance trial planted in 1971 based on their diameter at breast height and vitality. Increment cores were extracted from individual trees, on which we measured tree-ring widths (RW), earlywood widths (EWW) and latewood widths (LWW). Wood density was assessed in standing trees using resistance drilling. The climate–growth correlations were calculated between provenance chronologies of RW, EWW, LWW and latewood share, and the day-wise aggregated Standardised Precipitation-Evapotranspiration Index (SPEI). The analysis was done separately for the juvenile and mature phases of growth. Provenances 1064 (Jefferson) and 1080 (Yelm) exhibited larger annual radial increments than provenances 1028 (Merrit) and 1089 (Cathlamet). The two provenances with the highest annual radial increment in the juvenile phase did not exhibit the same trend in the adult phase. In all provenances, RW, and consequently EWW and LWW, were wider in the juvenile than in adult phase. The share of latewood was in all cases higher in juvenile wood than in mature wood. All four provenances had similar wood densities in both analyzed growth phases. Our analysis showed that when selecting the most promising provenance for planting, possible changes in relative growth rate from the juvenile to adult phase need to be considered.

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来源期刊
Trees
Trees 农林科学-林学
CiteScore
4.50
自引率
4.30%
发文量
113
审稿时长
3.8 months
期刊介绍: Trees - Structure and Function publishes original articles on the physiology, biochemistry, functional anatomy, structure and ecology of trees and other woody plants. Also presented are articles concerned with pathology and technological problems, when they contribute to the basic understanding of structure and function of trees. In addition to original articles and short communications, the journal publishes reviews on selected topics concerning the structure and function of trees.
期刊最新文献
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