No effect of long-term soil warming on diffusive soil inorganic and organic nitrogen fluxes in a temperate forest soil

被引：14
|
作者：
Heinzle, Jakob [1 ]
Wanek, Wolfgang [2 ]
Tian, Ye [2 ]
Kengdo, Steve Kwatcho [3 ]
Borken, Werner [3 ]
Schindlbacher, Andreas [1 ]
Inselsbacher, Erich [4 ]
机构：
[1] Nat Hazards & Landscape BFW, Dept Forest Ecol & Soil, Fed Res & Training Ctr Forests, Seckendorff Gudent Weg 8, A-1131 Vienna, Austria
[2] Univ Vienna, Div Terr Ecosyst Res, Ctr Microbiol & Environm Syst Sci, Althanstr 14, A-1090 Vienna, Austria
[3] Univ Bayreuth, Dept Soil Ecol, Dr Hans Frisch Str 1-3, D-95448 Bayreuth, Germany
[4] Univ Nat Resources & Life Sci Vienna BOKU, Inst Soil Res, Dept Forest & Soil Sci, Peter Jordan Str 82, A-1190 Vienna, Austria
来源：
SOIL BIOLOGY & BIOCHEMISTRY | 2021年 / 158卷
基金：
奥地利科学基金会;
关键词：
Soil warming; Microdialysis; Amino acids; Diffusive N fluxes; Temperate forest; Nitrogen availability; AMINO-ACIDS; HOT MOMENTS; MINERALIZATION; MICRODIALYSIS; METAANALYSIS; HOTSPOTS; SEASON; PLANTS;
D O I：
10.1016/j.soilbio.2021.108261
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
Climate warming affects nitrogen (N) cycling in forest soils, but implications for plant available N have remained unclear. We estimated in situ diffusive fluxes of amino acids and inorganic N in a temperate forest soil after 14 years of soil warming. Results from four sampling campaigns (n = 1152 microdialysis samples) during the growing season showed no effect of warming on diffusive N fluxes. Diffusive NH4+ fluxes increased from spring towards autumn while NO3- fluxes followed an opposite trend. Overall, the proportion of amino acids in the total diffusive N flux was low (13-30%) in this carbonate soil compared to other temperate and boreal forest soils.
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页数：5
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