GSTDTAP  > 气候变化
DOI10.1016/j.foreco.2019.117492
Tree regeneration responds more to shade casting by the overstorey and competition in the understorey than to abundance per se
De Lombaerde, Emiel1; Verheyen, Kris1; Van Calster, Hans2; Baeten, Lander1
2019-10-15
发表期刊FOREST ECOLOGY AND MANAGEMENT
ISSN0378-1127
EISSN1872-7042
出版年2019
卷号450
文章类型Article
语种英语
国家Belgium
英文摘要

Manipulating the overstorey is the key tool for forest managers to steer natural regeneration. Opening up the canopy does not only create favourable light conditions for tree seedling growth, but also for (competitive) understorey species. Therefore, a thorough understanding of how changes in the abundance of the overstorey and understorey influence tree regeneration is needed to attain successful regeneration.


To this end, we used the regional Flemish Forest Inventories, which contain vegetation plots that were surveyed at two times and include large variation in species composition and abundance of both overstorey and understorey layers. These plots were classified into poor and rich forest types, which differ in overstorey and understorey species composition and soil fertility. For each forest type, we first investigated the effect of overstorey abundance and shade-casting ability on the understorey herbaceous vegetation cover and its competitive nature. Then, we modelled how both these strata influence the presence-absence as well as the cover of tree regeneration, using the zero-inflated beta distribution.


Our results show that the understorey cover and its competitiveness mainly increase when the abundance and shade-casting ability of the overstorey is reduced. The shade-casting ability of the overstorey and competitiveness of the understorey were more important in determining tree regeneration, especially probability of presence, than the abundance of these layers per se. This was consistent for both forest types, although directions and magnitudes of the effects differed. In predictions mimicking several thinning scenarios we found that in the poor forests, reducing overstorey abundance could lead to an increase in seedling cover, whereas in rich forests, the opposite is true and seedling cover will potentially be reduced. Finally, in a single-species analysis focusing on Quercus, we found a trade-off between sufficiently reducing overstorey abundance, while at the same retaining parent trees as potential seed sources. These findings can be used to guide forest management decisions in order to attain successful forest regeneration in temperate forests.


英文关键词Herb layer Natural regeneration Competition Forestry Gap dynamics Logging
领域气候变化
收录类别SCI-E
WOS记录号WOS:000484651100005
WOS关键词PLANT-COMMUNITIES ; ECOLOGICAL FILTER ; TEMPERATE FORESTS ; DENSE UNDERSTORY ; FERN UNDERSTORY ; SCOTS PINE ; VEGETATION ; DYNAMICS ; GROWTH ; SEEDLINGS
WOS类目Forestry
WOS研究方向Forestry
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/187658
专题气候变化
作者单位1.Univ Ghent, Fac Biosci Engn, Forest & Nat Lab, Campus Gontrode,Geraardsbergsesteenweg 267, B-9090 Melle Gontrode, Belgium;
2.Res Inst Nat & Forest, Havenlaan 88 Bus 73, B-1000 Brussels, Belgium
推荐引用方式
GB/T 7714
De Lombaerde, Emiel,Verheyen, Kris,Van Calster, Hans,et al. Tree regeneration responds more to shade casting by the overstorey and competition in the understorey than to abundance per se[J]. FOREST ECOLOGY AND MANAGEMENT,2019,450.
APA De Lombaerde, Emiel,Verheyen, Kris,Van Calster, Hans,&Baeten, Lander.(2019).Tree regeneration responds more to shade casting by the overstorey and competition in the understorey than to abundance per se.FOREST ECOLOGY AND MANAGEMENT,450.
MLA De Lombaerde, Emiel,et al."Tree regeneration responds more to shade casting by the overstorey and competition in the understorey than to abundance per se".FOREST ECOLOGY AND MANAGEMENT 450(2019).
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