气候变化领域集成服务门户(CCPortal): How do mixing tree species and stand density affect seasonal radial growth during drought events?

CCPortal

DOI	10.1016/j.foreco.2018.09.044
	How do mixing tree species and stand density affect seasonal radial growth during drought events?
	Bello J.; Vallet P.; Perot T.; Balandier P.; Seigner V.; Perret S.; Couteau C.; Korboulewsky N.
发表日期	2019
ISSN	0378-1127
起始页码	436
结束页码	445
卷号	432
英文摘要	Forecasted climate change impacts on temperate forest ecosystems include increased summer drought. Forest managers can increase the resistance of forest stands against summer drought by reducing stand density and favoring tree species mixtures. These strategies have been studied separately, but their combined effect on increasing forest stand resistance to summer drought is unknown. The main objective of our study was to quantify tree species interaction effects on radial growth during a water stress period and to determine whether these effects changed with different levels of competition reflected by stand density. The study was based in the Orleans state forest (Central France) at a long-term triplet experimental site (OPTMix) with pure and mixed stands of mature Quercus petraea and Pinus sylvestris. The experimental design comprised three repetitions of two densities (low and medium) in each composition (pure oak, mixed stands, pure pine). We monitored tree radial growth with 216 manual dendrometers placed throughout 18 plots, on small, medium and large trees. We analyzed three consecutive years with contrasted water stress: no water stress, a summer stress period, and a late summer stress period. We found that mixture did not improve tree growth of the either species during the summer water stress period. On the other hand, there was a mixture effect during the late summer water stress period but only in medium-density stands inversely for the two species studied. More growth occurred for oaks in mixtures while, inversely, more growth occurred for pines in monocultures. A density effect occurred only for oaks, which grew more in lower-density stands than in medium-density stands. Finally, tree size did not influence seasonal resistance to drought. © 2018 Elsevier B.V.
英文关键词	Dendrometers; Drought; Interaction; Mature forest; Mixture; Monoculture; Pinus sylvestris; Quercus petraea; Resistance; Seasonal growth; Stand density
语种	英语
scopus关键词	Climate change; Drought; Ecosystems; Electric resistance; Mixtures; Plants (botany); Dendrometers; Interaction; Mature forest; Monoculture; Pinus sylvestris; Quercus petraea; Seasonal growth; Stand densities; Forestry; climate change; climate effect; coniferous forest; deciduous forest; dendrochronology; density; drought; experimental design; forest ecosystem; growth; monoculture; seasonal variation; stress resistance; temperate forest; water stress; Dendrometers; Drought; Ecosystems; Electric Resistance; Mixtures; Pinus Sylvestris; Centre-Val de Loire; France; Loiret; Orleans; Pinus sylvestris; Quercus; Quercus petraea
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/156375
作者单位	Irstea, UR EFNO, Domaine des Barres, Nogent-sur-Vernisson, F-45290, France; Univ. Grenoble Alpes, Irstea, UR LESSEM, Centre de Grenoble, St-Martin-d'Hères, F-38402, France
推荐引用方式 GB/T 7714	Bello J.,Vallet P.,Perot T.,et al. How do mixing tree species and stand density affect seasonal radial growth during drought events?[J],2019,432.
APA	Bello J..,Vallet P..,Perot T..,Balandier P..,Seigner V..,...&Korboulewsky N..(2019).How do mixing tree species and stand density affect seasonal radial growth during drought events?.Forest Ecology and Management,432.
MLA	Bello J.,et al."How do mixing tree species and stand density affect seasonal radial growth during drought events?".Forest Ecology and Management 432(2019).