气候变化领域集成服务门户(CCPortal): Functional traits of individual varieties as determinants of growth and nitrogen use patterns in mixed stands of willow (Salix spp.)

CCPortal

DOI	10.1016/j.foreco.2020.118605
	Functional traits of individual varieties as determinants of growth and nitrogen use patterns in mixed stands of willow (Salix spp.)
	Weih M.; Nordh N.-E.; Manzoni S.; Hoeber S.
发表日期	2021
ISSN	0378-1127
卷号	479
英文摘要	Short rotation plantations of willows (Salix spp.) have high biomass production potential in many parts of the world, and may frequently support ecosystem services related to nutrient cycling. A plantation management enhancing favorable environmental impacts that are conducive to maintaining ecosystem services is a main challenge in establishing sustainable biomass production systems. There is evidence supporting the hypothesis that biomass production and nutrient cycling can be increased by supporting ecosystem niche differentiation (complementarity) through enhancing the number of plant species or varieties grown in the stand. However, the specific trait values of the individual components (e.g., varieties) in a mixed community could also be more important than the community diversity per se. We assessed, at community level, the plant trait profiles related to growth and nitrogen (N) use for four different Salix varieties that were taxonomically distinct at species or genotype level (‘Björn’, ‘Jorr’, ‘Loden’, ‘Tora’) and field-grown in unfertilized plots of pure and mixed communities during one cutting cycle in Central Sweden. The aims were to use elements of functional growth analysis for exploring the mechanistic relationships between various traits related to growth and N use at stand level in our pure and mixed willow communities; and to address two hypotheses related to (i) the effect of diversity level on above-ground traits linked to growth, N uptake efficiency, N productivity and N conservation; and (ii) the influence of individual variety identities on the growth and N use traits observed in a mixture. Diversity level had no significant effect on the traits assessed here, and we thus found no evidence in support of our hypothesis that traits linked to growth, N uptake and use are significantly affected by the diversity level per se. In most but not all cases, the admixing effects on trait values were explained by the effects of the individual variety characteristics assessed in monocultures in combination with their relative share in the respective mixtures. The absence or presence of individual varieties strongly affected community-averaged (stand level) trait values. Therefore, the design of desirable variety mixtures is suggested that combine, for example, the high nutrient conversion efficiency that certain varieties achieve in mixed stands with the specific nutrient acquisition characteristics of other varieties. © 2020 The Author(s)
英文关键词	Biomass production; Functional traits; Growth analysis; Nitrogen use efficiency; Short rotation forestry; Variety mixtures
语种	英语
scopus关键词	Biomass; Efficiency; Environmental impact; Forestry; Mixtures; Nitrogen; Nutrients; Biomass productions; Community diversity; Ecosystem services; Individual components; Niche differentiation; Nutrient acquisition; Plantation managements; Short rotation plantation; Ecosystems; biomass; cutting (process); deciduous tree; ecosystem service; functional role; genotype; growth rate; mixed forest; nitrogen; nutrient cycling; nutrient use efficiency; plant community; species diversity; Biomass; Efficiency; Forestry; Mixtures; Nitrogen; Nutrients; Sweden; Salix
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/154901
作者单位	Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden; Department of Physical Geography, Stockholm University, Stockholm, Sweden
推荐引用方式 GB/T 7714	Weih M.,Nordh N.-E.,Manzoni S.,et al. Functional traits of individual varieties as determinants of growth and nitrogen use patterns in mixed stands of willow (Salix spp.)[J],2021,479.
APA	Weih M.,Nordh N.-E.,Manzoni S.,&Hoeber S..(2021).Functional traits of individual varieties as determinants of growth and nitrogen use patterns in mixed stands of willow (Salix spp.).Forest Ecology and Management,479.
MLA	Weih M.,et al."Functional traits of individual varieties as determinants of growth and nitrogen use patterns in mixed stands of willow (Salix spp.)".Forest Ecology and Management 479(2021).