气候变化领域集成服务门户(CCPortal): The influence of stand density on bilberry (Vaccinium myrtillus L.) cover depends on stand age, solar irradiation, and tree species composition

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DOI	10.1016/j.foreco.2018.09.054
	The influence of stand density on bilberry (Vaccinium myrtillus L.) cover depends on stand age, solar irradiation, and tree species composition
	Eldegard K.; Scholten J.; Stokland J.N.; Granhus A.; Lie M.
发表日期	2019
ISSN	0378-1127
起始页码	582
结束页码	590
卷号	432
英文摘要	The ericaceous shrub bilberry (Vaccinium myrtillus L.) is a keystone species of the Eurasian boreal forest. The most optimal light condition for this plant is partial shading. Shade from the forest canopy depends on the stand density, a forest attribute that can be manipulated by forest managers. Most previous studies of the relationship between bilberry abundance and forest density have not explored the potentially modifying impacts of factors like stand age, tree species composition, and the solar irradiation at the site, as determined by location and topography. Using data from the Norwegian National Forest Inventory, we developed a generalized linear model applicable to estimate local bilberry cover across a wide range of environmental conditions in Norway. The explanatory terms in the final model were stand density (basal area per ha), solar irradiation, stand age, percentages of deciduous, pine, and spruce trees, summer (June-August) mean temperature and precipitation sum, mean temperature in January, site index, and soil category, in addition to the two-way interactions between stand density and the following: solar irradiation, stand age, percentage of deciduous trees, and percentage of Norway spruce (Picea abies). The final model explained ca. 21% of the total variation in bilberry cover. We conclude that a stand density of c. 30 m2 ha−1 in general will create favourable conditions for bilberry. If the forest is younger than 80 years old, or dominated by Norway spruce or deciduous trees, the optimal stand density is reduced to around 20 m2 ha−1. In a forest dominated by Scots pine (Pinus sylvestris), basal areas up to 40 m2 ha−1 would be beneficial to bilberry abundance. Our results demonstrate the importance of considering interactions between stand density and other stand and site characteristics. © 2018 Elsevier B.V.
英文关键词	Basal area; Ground vegetation; Irradiation; Site index; Site productivity; Species distribution modelling
语种	英语
scopus关键词	Irradiation; Plants (botany); Solar radiation; Basal area; Ground vegetation; Site index; Site productivity; Species distribution modelling; Forestry; basal area; boreal forest; coniferous forest; deciduous forest; ecological modeling; environmental conditions; environmental factor; forest canopy; forest inventory; forest management; ground cover; irradiation; keystone species; shading; shrub; site index; solar radiation; stand dynamics; stand structure; vegetation cover; Age; Basal Area; Forestry; Radiation Effects; Site Index; Stand Density; Sun Light; Norway; Picea; Picea abies; Pinus sylvestris; Vaccinium myrtillus
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/156361
作者单位	Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, P.O. Box 5003, Ås, NO-1432, Norway; Norwegian Institute of Bioeconomy Research, P.O. Box 115, Ås, NO-1431, Norway; NLA University College, P.O. Box 7153 St. Olavs plass, Oslo, 0130, Norway
推荐引用方式 GB/T 7714	Eldegard K.,Scholten J.,Stokland J.N.,et al. The influence of stand density on bilberry (Vaccinium myrtillus L.) cover depends on stand age, solar irradiation, and tree species composition[J],2019,432.
APA	Eldegard K.,Scholten J.,Stokland J.N.,Granhus A.,&Lie M..(2019).The influence of stand density on bilberry (Vaccinium myrtillus L.) cover depends on stand age, solar irradiation, and tree species composition.Forest Ecology and Management,432.
MLA	Eldegard K.,et al."The influence of stand density on bilberry (Vaccinium myrtillus L.) cover depends on stand age, solar irradiation, and tree species composition".Forest Ecology and Management 432(2019).