气候变化领域集成服务门户(CCPortal): Aridity and reduced soil micronutrient availability in global drylands

CCPortal

DOI	10.1038/s41893-019-0262-x
	Aridity and reduced soil micronutrient availability in global drylands
	Moreno-Jiménez E.; Plaza C.; Saiz H.; Manzano R.; Flagmeier M.; Maestre F.T.
发表日期	2019
ISSN	2398-9629
起始页码	371
结束页码	377
卷号	2 期号:5
英文摘要	Drylands cover more than 40% of the terrestrial surface, and their global extent and socioecological importance will increase in the future due to the forecasted increases in aridity driven by climate change. Despite the essential role of metallic micronutrients in life chemistry and ecosystem functioning, it is virtually unknown how their bioavailability changes along aridity gradients at the global scale. Here, we analysed soil total and available copper, iron, manganese and zinc in 143 drylands from all continents, except Antarctica, covering a broad range of aridity and soil conditions. We found that total and available micronutrient concentrations in dryland soils were low compared with averages commonly found in soils of natural and agricultural ecosystems globally. Aridity negatively affected the availability of all micronutrients evaluated, mainly indirectly by increasing soil pH and decreasing soil organic matter. Remarkably, the available Fe:Zn ratio decreased exponentially as the aridity increased, pointing to stoichiometric alterations. Our findings suggest that increased aridity conditions due to climate change will limit the availability of essential micronutrients for organisms, particularly iron and zinc, which together with other adverse effects (for example, reduced water availability) may pose serious threats to key ecological processes and services, such as food production, in drylands worldwide. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Biochemistry; Ecosystems; Iron; Nutrients; Soils; Trace elements; Zinc; Agricultural ecosystems; Available micronutrients; Ecological process; Ecosystem functioning; Socio-ecological; Soil organic matters; Terrestrial surface; Water availability; Climate change
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/163367
作者单位	Department of Agricultural and Food Sciences, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain; Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Madrid, Spain; Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Madrid, Spain; Dipartimento di Agraria, Sezione di Scienze e Tecnologie Ambientali e Alimentari, Università degli Studi di Sassari, Sassari, Italy; Department of Biology (Botany), Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
推荐引用方式 GB/T 7714	Moreno-Jiménez E.,Plaza C.,Saiz H.,et al. Aridity and reduced soil micronutrient availability in global drylands[J],2019,2(5).
APA	Moreno-Jiménez E.,Plaza C.,Saiz H.,Manzano R.,Flagmeier M.,&Maestre F.T..(2019).Aridity and reduced soil micronutrient availability in global drylands.Nature Sustainability,2(5).
MLA	Moreno-Jiménez E.,et al."Aridity and reduced soil micronutrient availability in global drylands".Nature Sustainability 2.5(2019).