气候变化领域集成服务门户(CCPortal): The effect of bedrock and species mixture on wood density and radial wood increment in pubescent oak and black pine

CCPortal

DOI	10.1016/j.foreco.2020.118753
	The effect of bedrock and species mixture on wood density and radial wood increment in pubescent oak and black pine
	Krajnc L.; Hafner P.; Gričar J.
发表日期	2020
ISSN	0378-1127
英文摘要	Wood density and radial wood increment were examined in trees of pubescent oak (Quercus pubescens Willd.) and black pine (Pinus nigra Arnold., subsp. nigra) in relation to stand mixture and underlying bedrock. Trees of both species from pure and mixed stands were sampled across two types of bedrock, limestone and flysch. Trees from each species were similar in age. Wood density was estimated in standing trees using resistance drilling and increment cores were taken from a smaller subsample of trees of both species. Tree-ring, earlywood and latewood widths were measured and compared to radial profiles of wood density. The influence of stand mixture, diameter at breast height and bedrock on wood density was examined using a Bayesian general linear model. Wood density was significantly higher in pubescent oak than in black pine. Stand mixture was found to affect wood density positively, although the magnitude of the effect was relatively small when compared to other influencing factors also included in the current study. The effect of diameter on wood density was positive on both bedrocks in pubescent oak and negative or neutral in black pine. The size of the effect varied by bedrock and species. On flysch bedrock, the influence of diameter on wood density was stronger than it was on limestone. These indirect bedrock effects on wood density are probably a result of different soil fertility rather than the bedrock itself. There was a notable difference in radial wood increment in both species across the two bedrocks, whereas the differences in densities were smaller. Higher wood densities found on flysch in the subsample of pubescent oaks are likely an effect of higher proportions of latewood, while the opposite trend was observed in black pine. Higher wood density was found on limestone in black pine despite higher latewood percentages on flysch. In the context of forest management, the species composition of the naturally occurring mixtures in the sub-Mediterranean region should be adjusted slightly to favor pubescent oak, since it is a climax species and will bind more carbon for longer than black pine due to higher wood densities. Future forest management should also promote the overall development of pubescent oak trees in sub-Mediterranean stands. The results are especially important in the European context, because the share of sub-Mediterranean stands is expected to rise with global warming. © 2020 Elsevier B.V.
英文关键词	Flysch; Karst; Limestone; Pinus nigra; Quercus pubescens; Resistance drilling; Resistograph; Wood structure
语种	英语
scopus关键词	Global warming; Hardwoods; Lime; Limestone; Mixtures; Diameter-at-breast heights; European context; General linear modeling; Mediterranean region; Naturally occurring; Pinus nigra ARNOLD; Resistance drillings; Species composition; Forestry
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155637
作者单位	Slovenian Forestry Institute, Ljubljana, Slovenia
推荐引用方式 GB/T 7714	Krajnc L.,Hafner P.,Gričar J.. The effect of bedrock and species mixture on wood density and radial wood increment in pubescent oak and black pine[J],2020.
APA	Krajnc L.,Hafner P.,&Gričar J..(2020).The effect of bedrock and species mixture on wood density and radial wood increment in pubescent oak and black pine.Forest Ecology and Management.
MLA	Krajnc L.,et al."The effect of bedrock and species mixture on wood density and radial wood increment in pubescent oak and black pine".Forest Ecology and Management (2020).