气候变化领域集成服务门户(CCPortal): Negative to positive shifts in diversity effects on soil nitrogen over time

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DOI	10.1038/s41893-020-00641-y
	Negative to positive shifts in diversity effects on soil nitrogen over time
	Chen X.; Chen H.Y.H.; Searle E.B.; Chen C.; Reich P.B.
发表日期	2020
ISSN	2398-9629
英文摘要	Soil nitrogen (N) availability is of critical importance to the productivity of terrestrial ecosystems worldwide. Plant diversity continues to decline globally due to habitat conversion and degradation, but its influence on soil N remains uncertain. By conducting a global meta-analysis of 1,650 paired observations of soil N in plant species mixtures and monocultures from 149 studies, we show that, on average across observations, soil total N is 6.1% higher in species mixtures. This mixture effect on total N becomes more positive with the number of species in mixtures and with stand age. The mixture effects on net N mineralization rate and inorganic N concentrations shift from negative in young stands to positive in older stands with greater positive effects in more-diverse mixtures. These effects of mixtures were consistent among cropland, forest and grassland ecosystems and held across climate zones. Our results suggest that plant diversity conservation not only enhances the productivity of current vegetation but also increases soil N retention that will sustain the productivity of future vegetation. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Ecosystems; Mixtures; Nitrogen; Productivity; Soils; Vegetation; Diversity effects; Forest and grassland; Mixture effects; Net N mineralization; Number of species; Plant diversity; Species mixtures; Terrestrial ecosystems; Soil conservation
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/163117
作者单位	Faculty of Natural Resources Management, Lakehead University, Thunder Bay, ON, Canada; Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Institute of Geography, Fujian Normal University, Fuzhou, China; Department of Forest Resources, University of Minnesota, Saint Paul, MN, United States; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
推荐引用方式 GB/T 7714	Chen X.,Chen H.Y.H.,Searle E.B.,et al. Negative to positive shifts in diversity effects on soil nitrogen over time[J],2020.
APA	Chen X.,Chen H.Y.H.,Searle E.B.,Chen C.,&Reich P.B..(2020).Negative to positive shifts in diversity effects on soil nitrogen over time.Nature Sustainability.
MLA	Chen X.,et al."Negative to positive shifts in diversity effects on soil nitrogen over time".Nature Sustainability (2020).