globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13785
论文题名:
Symbiotic soil fungi enhance ecosystem resilience to climate change
作者: Martínez-García L.B.; De Deyn G.B.; Pugnaire F.I.; Kothamasi D.; van der Heijden M.G.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
语种: 英语
英文关键词: Arbuscular mycorrhizal fungi ; Climate change ; Nitrogen ; Nutrient leaching ; Phosphorus ; Rainfall regimes
英文摘要: Substantial amounts of nutrients are lost from soils through leaching. These losses can be environmentally damaging, causing groundwater eutrophication and also comprise an economic burden in terms of lost agricultural production. More intense precipitation events caused by climate change will likely aggravate this problem. So far it is unresolved to which extent soil biota can make ecosystems more resilient to climate change and reduce nutrient leaching losses when rainfall intensity increases. In this study, we focused on arbuscular mycorrhizal (AM) fungi, common soil fungi that form symbiotic associations with most land plants and which increase plant nutrient uptake. We hypothesized that AM fungi mitigate nutrient losses following intensive precipitation events (higher amount of precipitation and rain events frequency). To test this, we manipulated the presence of AM fungi in model grassland communities subjected to two rainfall scenarios: moderate and high rainfall intensity. The total amount of nutrients lost through leaching increased substantially with higher rainfall intensity. The presence of AM fungi reduced phosphorus losses by 50% under both rainfall scenarios and nitrogen losses by 40% under high rainfall intensity. Thus, the presence of AM fungi enhanced the nutrient interception ability of soils, and AM fungi reduced the nutrient leaching risk when rainfall intensity increases. These findings are especially relevant in areas with high rainfall intensity (e.g., such as the tropics) and for ecosystems that will experience increased rainfall due to climate change. Overall, this work demonstrates that soil biota such as AM fungi can enhance ecosystem resilience and reduce the negative impact of increased precipitation on nutrient losses. © 2017 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61102
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Soil Quality Wageningen University 6700 AA Wageningen The Netherlands; Estación Experimental de Zonas Áridas Consejo Superior de Investigaciones Científicas 04120 Almería Spain; Department of Environmental Studies University of Delhi Delhi 110 007 India; Plant-Soil Interactions Research Division of Agroecology and Environmental Science Agroscope CH - 8046 Zürich Switzerland; Department of Evolutionary Biology and Environmental Studies University of Zürich CH - 8057 Zürich Switzerland; Plant-Microbe Interactions Institute of Environmental Biology Faculty of Science Utrecht University Utrecht The Netherlands

Recommended Citation:
Martínez-García L.B.,De Deyn G.B.,Pugnaire F.I.,et al. Symbiotic soil fungi enhance ecosystem resilience to climate change[J]. Global Change Biology,2017-01-01
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