气候变化领域集成服务门户(CCPortal): Mitigating crop yield losses through weed diversity

CCPortal

DOI	10.1038/s41893-019-0415-y
	Mitigating crop yield losses through weed diversity
	Adeux G.; Vieren E.; Carlesi S.; Bàrberi P.; Munier-Jolain N.; Cordeau S.
发表日期	2019
ISSN	2398-9629
起始页码	1018
结束页码	1026
卷号	2 期号:11
英文摘要	Reconciling crop productivity and biodiversity maintenance is one of the main challenges of agriculture worldwide. Moreover, the importance of weed diversity in mitigating yield losses has been identified as one of the top five research priorities in weed science. We tested the hypotheses that (1) not all weed communities generate yield losses and (2) that more diversified weed communities can mitigate yield losses. The study is based on three years of observations of weed densities, weed biomass and crop biomass at four critical growth stages of winter cereals across 54 zones (36 unweeded and 18 weeded). Out of the six communities identified, only four generated significant yield losses in unweeded zones, ranging from 19% to 56%. The number of ears per plant and the number of grains per ear were systematically affected. Only one weed community was capable of reducing 1,000-kernel weight. Weed biomass decreased by 83% over the gradient of weed community evenness, whereas crop productivity increased by 23%. Diversified weed communities limited the negative effect of competitive and dominant species on crop productivity while potentially promoting ecosystem services provided by subordinate species. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Biodiversity; Biomass; Ecosystems; Productivity; Critical growth; Crop productivity; Dominant species; Ecosystem services; Kernel weight; Research priorities; Weed density; Winter cereals; Crops
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163018
作者单位	Agroécologie, AgroSup Dijon, INRA, Univ. Bourgogne, Univ. Franche-Comté, Dijon, France; Group of Agroecology, Institute of Life Sciences, Scuola Superiore Sant’Anna, Pisa, Italy
推荐引用方式 GB/T 7714	Adeux G.,Vieren E.,Carlesi S.,et al. Mitigating crop yield losses through weed diversity[J],2019,2(11).
APA	Adeux G.,Vieren E.,Carlesi S.,Bàrberi P.,Munier-Jolain N.,&Cordeau S..(2019).Mitigating crop yield losses through weed diversity.Nature Sustainability,2(11).
MLA	Adeux G.,et al."Mitigating crop yield losses through weed diversity".Nature Sustainability 2.11(2019).